Cambium Networks XI-N450 802.11abgn 3x3 Module User Manual xirrus PDF

Xirrus, Inc. 802.11abgn 3x3 Module xirrus PDF

DRAFT5_ArrayGuide_XR_Rel6.1_RevD_Commentable-(2 of 2)

Wireless Array Configuring the Wireless Array 18110. SNMP Read-Write Privacy Password: Enter the read-write password for privacy (i.e., a key for encryption). The default is xirrus-rw. 11. SNMP Read-Only Username: Enter the read-only user name. This username and password do not allow configuration changes to be made on the Array. The default is xirrus-ro.12. SNMP Read-Only Authentication Password: Enter the read-only password for authentication (i.e., logging in). The default is xirrus-ro. 13. SNMP Read-Only Privacy Password: Enter the read-only password for privacy (i.e., a key for encryption). The default is xirrus-ro. SNMP Trap Settings 14. SNMP Trap Host IP Address: Enter the IP Address or hostname, as well as the Port number, of an SNMP management station that is to receive SNMP traps. You may specify up to four hosts that are to receive traps. Note that by default, Trap Host 1 sends traps to Xirrus-XMS. Thus, the Array will automatically communicate its presence to XMS (as long as the network is configured correctly to allow this host name to be resolved — note that DNS is not normally case-sensitive). For a definition of the traps sent by Xirrus Wireless Arrays, you may download the Xirrus MIB from support.xirrus.com (login required). Search for the string TRAP in the MIB file.15. Send Auth Failure Traps: Choose Yes to log authentication failure traps or No to disable this feature.16. Keepalive Trap Interval (minutes): Traps are sent out at this interval to indicate the presence of the Array on the network. Keepalive traps are required for proper operation with XMS. To disable keepalive traps, set the value to 0.17. Click Save changes to flash if you wish to make your changes permanent.See AlsoServices
Wireless Array182 Configuring the Wireless ArraySystem LogTime Settings (NTP)DHCP ServerThis window allows you to create, enable, modify and delete DHCP (Dynamic Host Configuration Protocol) address pools. DHCP allows the Array to provide wireless clients with IP addresses and other networking information. The DHCP server will not provide DHCP services to the wired side of the network. If you do not use the DHCP server on the Array, then your wired network must be configured to supply DHCP addresses and gateway and DNS server addresses to wireless clients.When you create a DHCP pool, you must define the DHCP lease time (default and maximum), the IP address ranges (pools) that the DHCP server can assign, and the gateway address and DNS servers to be used by clients. Figure 108. DHCP ManagementDHCP usage is determined in several windows — see SSID Management, Group Management, and VLAN Management.
Wireless Array Configuring the Wireless Array 183Procedure for Configuring the DHCP Server1. New Internal DHCP Pool: Enter a name for the new DHCP pool, then click on the Create button. The new pool ID is added to the list of available DHCP pools.2. On: Click this checkbox to make this pool of addresses available, or clear it to disable the pool.3. Lease Time — Default: This field defines the default DHCP lease time (in seconds). The factory default is 300 seconds, but you can change the default at any time.4. Lease Time — Max: Enter a value (in seconds) to define the maximum allowable DHCP lease time. The default is 300 seconds.5. Network Address Translation (NAT): Check this box to enable the Network Address Translation feature.6. Lease IP Range — Start: Enter an IP address to define the start of the IP range that will be used by the DHCP server. The default is 192.168.1.100.7. Lease IP Range — End: Enter an IP address to define the end of the IP range that will be used by the DHCP server. The DHCP server will only use IP addresses that fall between the start and end range that you define on this page. The default is 192.168.1.200.8. Subnet Mask: Enter the subnet mask for this IP range for the DHCP server. The default is 255.255.255.0.9. Gateway: If necessary, enter the IP address of the gateway.10. Domain: Enter the DNS domain name. See “DNS Settings” on page 167.11. DNS Servers (1 to 3): Enter the IP address of the primary DNS server, secondary DNS server and tertiary DNS server. These DNS server addresses will be passed to stations when they associate, along with the assigned IP address. Note that if you leave these blank, no DNS information is sent to the stations. DHCP will not default to sending the DNS servers that are configured in DNS Settings. See also, “DNS Settings” on page 167.
Wireless Array184 Configuring the Wireless Array12. Click Save changes to flash if you wish to make your changes permanent.See AlsoDHCP LeasesDNS SettingsNetwork Map
Wireless Array Configuring the Wireless Array 185VLANsThis is a status-only window that allows you to review the current status of assigned VLANs. A VLAN (Virtual LAN) is comprised of a group of devices that communicate as a single network, even though they are physically located on different LAN segments. Because VLANs are based on logical rather than physical connections, they are extremely flexible. A device that is moved to another location can remain on the same VLAN without any hardware reconfiguration.In addition to listing all VLANs, this window shows your settings for the Default Route VLAN and the Native (Untagged) VLAN (Step 1 page 188).Figure 109. VLANsUnderstanding Virtual Tunnels Xirrus Arrays support Layer 2 tunneling with Virtual Tunnels. This allows an Array to use tunnels to transport traffic for one or more SSID-VLAN pairs onto a single destination network through the Layer 3 core network. The Array has low overhead and latency for virtual tunnel connections, with high resilience. The Array performs all encryption and decryption in hardware, maintaining wire-rate encryption performance on the tunnel. For a complete discussion of implementing Voice over Wi-Fi on the Array, see the Xirrus Voice over Wireless Application Note in the Xirrus Resource Center.
Wireless Array186 Configuring the Wireless ArrayVirtual Tunnel Server (VTS)Tunneling capability is provided by a Virtual Tunnel Server. You supply the server and deploy it in your network using open-source VTun software, available from vtun.sourceforge.net. To enable the Array to use tunneling for a VLAN, simply enter the IP address, port and secret for the tunnel server as described in Step 11 on page 189. VTun may be configured for a number of different tunnel types, protocols, and encryption types. For use with Arrays, we recommend the following configuration choices:Tunnel Type: Ether (Ethernet tunnel) Protocol: UDPEncryption Type: select one of the encryption types supported by VTun (AES and Blowfish options are available) Keepalive: yesClient-Server InteractionThe Array is a client of the Virtual Tunnel Server. When you specify a VTS for a an active VLAN-SSID pair, the Array contacts the VTS. The server then creates a tunnel session to the Array. VTun encapsulated packets will cross the Layer 3 network from the Array to the VTS. When packets arrive at the VTS, they will be de-encapsulated and the resultant packets will be passed to your switch with 802.1q VLAN tags for final Layer 2 processing. The process occurs in reverse for packets traveling in the other direction. We recommend that you enable the VTun keep-alive option. This will send a keep-alive packet once per second to ensure that the tunnel remains active. Tunnels can be configured to come up on demand but this is a poor choice for wireless, since tunnel setup can take roughly 5-20 seconds and present a problem for authentication.
Wireless Array Configuring the Wireless Array 187VLAN ManagementThis window allows you to assign and configure VLANs. After creating a new VLAN (added to the list of VLANs), you can modify the configuration parameters of an existing VLAN or delete a selected VLAN. You may create up to 32 VLANs. Figure 110. VLAN ManagementThe Wireless Array supports dynamic VLAN assignments specified by RADIUS policy settings. When RADIUS sends these assignments, the Array dynamically assigns wireless stations to VLANs as requested. VLAN tags on traffic are passed through the Array (i.e., VLAN tags are not stripped). Once a station has been dynamically moved to a new VLAN, it will be shown in the Stations window as a member of the new VLAN. (Figure 68 on page 119)It is critical to configure all VLANs to be used on the Array, even those that will be dynamically assigned.
Wireless Array188 Configuring the Wireless ArrayProcedure for Managing VLANs 1. Default Route: This option sets a default route from the Array. The Array supports a default route on native and tagged interfaces. Once the default route is configured the Array will attempt to use Address Resolution Protocol (ARP) to find the default router. ARP finds the MAC address of a device with a given IP address by sending out a broadcast message requesting this information. This option allows you to choose a default VLAN route from the pull-down list. The IP Gateway must be established for this function to work. After changing the Default Route, you mustclick Save changes to flash and then reboot.2. Native VLAN: This option sets whether the Array management is tagged or untagged. If you select a Native VLAN, then that VLAN will use an untagged (Native) link. Otherwise, the Array will use 802.1Q tagging and a specific VLAN ID with management enabled for management of the Array.3. New VLAN Name/Number: Enter a name and number for the new VLAN in this field, then click on the Create button. The new VLAN is added to the list.4. VLAN Number: Enter a number for this VLAN (1-4094).5. Management: Check this box to allow management over this VLAN.6. Xirrus Roaming: Check this box to allow roaming over this VLAN.7. DHCP: Check this box if you want the DHCP server to assign the IP address, subnet mask and gateway address to the VLAN automatically, otherwise you must go to the next step and assign these parameters manually.8. IP Address: If the DHCP option is disabled, enter a valid IP address for this VLAN association.9. Subnet Mask: If the DHCP option is disabled, enter the subnet mask IP address for this VLAN association.
Wireless Array Configuring the Wireless Array 18910. Gateway: If the DHCP option is disabled, enter the IP gateway address for this VLAN association.11. Tunnel Server: If this VLAN is to be tunneled, enter the IP address or host name of the tunnel server that will perform the tunneling. For more information on virtual tunnels, please see “Understanding Virtual Tunnels” on page 185. 12. Port: If this VLAN is to be tunneled, enter the port number of the tunnel server. 13. New Secret: Enter the password expected by the tunnel server.14. Delete: To delete the selected VLAN, simply click the Delete button to remove the VLAN from the list.15. Click Save changes to flash if you wish to make your changes permanent.See AlsoVLAN StatisticsVLANs
Wireless Array190 Configuring the Wireless ArraySecurityThis status- only window allows you to review the Array’s security parameters. It includes the assigned network administration accounts, Access Control List (ACL) values, management settings, encryption and authentication protocol settings, and RADIUS configuration settings. There are no configuration options available in this window, but if you are experiencing issues with security, you may want to print this window for your records.Figure 111. Security For additional information about wireless network security, refer to:“Security Planning” on page 45“Understanding Security” on page 191The Security section of “Frequently Asked Questions” on page 412.For information about secure use of the WMI, refer to:“Certificates and Connecting Securely to the WMI” on page 194“Using the Array’s Default Certificate” on page 194
Wireless Array Configuring the Wireless Array 191“Using an External Certificate Authority” on page 195“About Creating Admin Accounts on the RADIUS Server” on page 200“About Creating User Accounts on the RADIUS Server” on page 216Security settings are configured with the following windows:“Admin Management” on page 196“Admin Privileges” on page 198“Admin RADIUS” on page 200“Management Control” on page 203“Access Control List” on page 209“Global Settings” on page 212“External Radius” on page 216“Internal Radius” on page 219“Rogue Control List” on page 222 Understanding SecurityThe Xirrus Wireless Array incorporates many configurable security features. After initially installing an Array, always change the default administrator password (the default is admin), and choose a strong replacement password (containing letters, numbers and special characters). When appropriate, issue read-only administrator accounts.Other security considerations include:SSH versus Telnet: Be aware that Telnet is not secure over network connections and should be used only with a direct serial port connection. When connecting to the unit’s Command Line Interface over a network connection, you must use a Secure SHell version 2 (SSH-2) utility. SSH-2 provides stronger security than SSH-1. The most commonly used freeware providing SSH tools is PuTTY.Configuration auditing: The optional Xirrus Management System (XMS) offers powerful management features for small or large Xirrus wireless deployments, and can audit your configuration settings automatically. In addition, using the XMS eliminates the need for an FTP server.
Wireless Array192 Configuring the Wireless ArrayChoosing an encryption method: Wireless data encryption prevents eavesdropping on data being transmitted or received over the airwaves. The Array allows you to establish the following data encryption configuration options:•Open — this option offers no data encryption and is not recommended, though you might choose this option if clients are required to use a VPN connection through a secure SSH utility, like PuTTy.•WEP (Wired Equivalent Privacy) — this option provides minimal protection (though much better than using an open network). An early standard for wireless data encryption and supported by all Wi-Fi certified equipment, WEP is vulnerable to hacking and is therefore not recommended for use by Enterprise networks.•WPA (Wi-Fi Protected Access) and WPA2 — these are much stronger encryption modes than WEP, using TKIP (Temporal Key Integrity Protocol) or AES (Advanced Encryption Standard) to encrypt data.WPA solves security issues with WEP. It also allows you to establish encryption keys on a per-user-basis, with key rotation for added security. In addition, TKIP provides Message Integrity Check (MIC) functionality and prevents active attacks on the wireless network.AES is the strongest encryption standard and is used by government agencies; however, old legacy hardware may not be capable of supporting the AES mode (it probably won’t work on older wireless clients). Because AES is the strongest encryption standard currently available, WPA2 with AES is highly recommended for Enterprise networks. Any of the above encryption methods can be used and an Array can support multiple encryption methods simultaneously, but only one method may be selected per SSID (except that selecting WPA-Both allows WPA and WPA2 to be used at the same time on the same SSID).
Wireless Array Configuring the Wireless Array 193Otherwise, if multiple security methods are needed, you must define multiple SSIDs.The encryption mode (WEP, WPA, etc.) is selected in the SSIDs >SSID Management window (see “SSID Management” on page 231). The encryption standard used with WPA or WPA2 (AES or TKIP) is selected in the Security>Global Settings window under WPA Settings(see “Global Settings” on page 212). Choosing an authentication method: User authentication ensures that users are who they say they are. For this purpose, the Array allows you to choose between the following user authentication methods:•Pre-Shared Key — users must manually enter a key (passphrase) on the client side of the wireless network that matches the key stored by the administrator in the Array.This method should be used only for smaller networks when a RADIUS server is unavailable. If PSK must be used, choose a strong passphrase containing between 8 and 63 characters (20 is preferred). Always use a combination of letters, numbers and special characters. Never use English words separated by spaces.•RADIUS 802.1x with EAP — 802.1x uses a RADIUS server to authenticate large numbers of clients, and can handle different EAP (Extensible Authentication Protocol) authentication methods, including EAP-TLS, EAP-TTLS, EAP-PEAP, and LEAP-Passthrough. The RADIUS server can be internal (provided by the Wireless Array) or external. An external RADIUS server offers more functionality and security, and is recommended for large deployments. When using this method, user names and passwords must be entered into the RADIUS server for user authentication.•MAC Address ACLs (Access Control Lists) — MAC address ACLs provide a list of client adapter MAC addresses that are allowed or denied access to the wireless network. Access Control Lists work well when there are a limited number of users — in this case, enter the MAC address of each user in the Allow list. In
Wireless Array194 Configuring the Wireless Arraythe event of a lost or stolen MAC adapter, enter the affected MAC address in the Deny list.The Wireless Array will accept up to 1,000 ACL entries. Certificates and Connecting Securely to the WMIWhen you point your browser to the Array to connect to the WMI, the Array presents an X.509 security certificate to the browser to establish a secure channel. One significant piece of information in the certificate is the Array’s host name. This ties the certificate to a particular Array and ensures the client that it is connecting to that host.Certificate Authorities (CAs) are entities that digitally sign certificates, using their own certificates (for example, VeriSign is a well-known CA). When the Array presents its certificate to the client’s browser, the browser looks up the CA that signed the certificate to decide whether to trust it. Browsers ship with a small set of trusted CAs already installed. If the browser trusts the certificate’s CA, it checks to ensure the host name (and IP address) match those on the certificate. If any of these checks fail, you get a security warning when connecting to the WMI. The Array ships with a default certificate that is signed by the Xirrus CA. You may choose to use this certificate, or to use a certificate issued by the CA of your choice, as described in the following sections:Using the Array’s Default CertificateUsing an External Certificate AuthorityUsing the Array’s Default CertificateFigure 112. Import Xirrus Certificate Authority
Wireless Array Configuring the Wireless Array 195The Array’s certificate is signed by a Xirrus CA that is customized for your Array and its current host name. By default, browsers will not trust the Array’s certificate. You may import the Xirrus certificate to instruct the browser to trust the Xirrus CA on all future connections to Arrays. The certificate for the Xirrus CA is available on the Array, so that you can import it into your browser’s cache of trusted CAs (right alongside VeriSign, for example). On the Management Control window of the WMI you will see the xirrus-ca.crt file. (Figure 112) By clicking and opening this file, you can follow your browser’s instructions and import the Xirrus CA into your CA cache (see page 207 for more information). This instructs your browser to trust any of the certificates signed by the Xirrus CA, so that when you connect to any of our Arrays you should no longer see the warning about an untrusted site. Note however, that this only works if you use the host name when connecting to the Array. If you use the IP address to connect, you get a lesser warning saying that the certificate was only meant for ‘hostname’.Since an Array’s certificate is based on the Array’s host name, any time you change the host name the Array’s CA will regenerate and sign a new certificate. This happens automatically the next time you reboot after changing the host name. If you have already installed the Xirrus CA on a browser, this new Array certificate should automatically be trusted. When you install the Xirrus CA in your browser, it will trust a certificate signed by any Xirrus Array, as long as you connect using the Array’s host name. Using an External Certificate AuthorityIf you prefer, you may install a certificate on your Array signed by an outside CA. Why use a certificate from an external CA? The Array’s certificate is used for security when stations attempt to associate to an SSID that has Web Page Redirect enabled. In this case, it is preferable for the Array to present a certificate from an external CA that is likely to be trusted by most browsers. When a WPR login page is presented, the user will not see a security error if the Array’s certificate was obtained from an external CA that is already trusted by the user’s browser. WMI provides options for creating a Certificate Signing Request that you can send to an external CA, and for uploading the signed certificate to the Array after
Wireless Array196 Configuring the Wireless Arrayyou obtain it from the CA. This certificate will be tied to the Array’s host name and private key. See “External Certification Authority” on page 208 for more details. Admin ManagementThis window allows you to manage network administrator accounts (create, modify and delete). It also allows you to limit account access to a read only status. When finished, click on the Save changes to flash button if you wish to make your changes permanent.Figure 113. Admin Management Procedure for Creating or Modifying Network Administrator Accounts1. Admin ID: Enter the login name for a new network administrator ID. The length of the ID must be between 5 and 50 characters, inclusive. 2. Read/Write: Choose Read/Write if you want to give this administrator ID full read/write privileges, or choose Read to restrict this user to read only status. In the read only mode, administrators cannot save changes to configurations.3. User Password: Enter a password for this ID. The length of the password must be between 5 and 50 characters, inclusive. 4. Verify Password: Re-enter the password in this field to verify that you typed the password correctly. If you do not re-enter the correct password, an error message is displayed).
Wireless Array Configuring the Wireless Array 1975. Click on the Create button to add this administrator ID to the list.6. Click Save changes to flash if you wish to make your changes permanent.See AlsoAdmin PrivilegesExternal RadiusGlobal Settings (IAP)Internal RadiusManagement Control
Wireless Array198 Configuring the Wireless ArrayAdmin PrivilegesThis window provides a detailed level of control over the privileges of Array administrators. Administrators may be assigned one of eight Privilege Levels. You may define the privilege level of each major feature (Configuration Section) that may be configured on the Array. For example, say that you set the privilege level to 4 for Reboot Array, Security, Radius Server, and SNMP, and you leave all other configuration sections at the default privilege level of 1. In this case, any administrator with a privilege level of 4 or higher may perform any operation on the Array, while an administrator with a privilege level lower than 4 but at least 1 may perform any operation except those whose level was set to 4. An error message will be displayed if an operation is attempted without a sufficient privilege level. Figure 114. Admin Privileges Privilege level 0 is read-only. As a minimum, all administrators have permission for read access to all areas of Array configuration. Higher privilege levels may be used to define additional privileges for specific configuration sections.
Wireless Array Configuring the Wireless Array 199If you are using an Admin RADIUS server to define administrator accounts, please see “RADIUS Vendor Specific Attribute (VSA) for Xirrus” on page 423 to set the privilege level for each administrator.Procedure for Configuring Admin Privileges1. Privilege Level Names (optional): You may assign a Name to each Privilege Level. The name may be used to describe the access granted by this level. By default, levels 0 and 1 are named read-only and read-write, respectively, and levels 2 through 7 have the same name as their level number.2. Privilege Levels: Use this section to assign a Minimum Privilege Levelto selected Configuration Sections as desired. By default, all sections are assigned level 1. When you select a higher privilege level for a configuration section, then only administrators who have at least that privilege level will be able to make configuration changes to that section. 3. You may click ^ at the bottom of any row to toggle the values in the entire column to either on or off. 4. Click Save changes to flash if you wish to make your changes permanent.See AlsoExternal RadiusGroupsAdmin ManagementAdmin RADIUSSecurity
Wireless Array200 Configuring the Wireless ArrayAdmin RADIUSThis window allows you to set up authentication of network administrators via RADIUS. Using RADIUS to control administrator accounts for logging in to Arrays has these benefits: Centralized control of administrator accounts. Less effort — you don't have to set up user names and passwords on each Array; just enter them once on the RADIUS server and then all of the Arrays can pull from the RADIUS server. Enforced policies — you may set password rules (e.g., passwords must contain at least one number and be at least 12 characters in length), and you may set expiration times for passwords. Admin RADIUS settings override any local administrator accounts configured on the Admin Management window. If you have Admin RADIUS enabled, all administrator authentication is done via the configured RADIUS servers. The only exception to this is when you are connected via the Console port (using CLI). If you are using the Console port, the Array will authenticate administrators using accounts configured on the Admin Management window first, and then use the RADIUS servers. This provides a safety net to be ensure that you are not completely locked out of an Array if the RADIUS server is down.About Creating Admin Accounts on the RADIUS Server Permissions for RADIUS administrator accounts are controlled by the RADIUS Xirrus-Admin-Role attribute. This is a Vendor Specific Attribute (VSA). To define the privileges permitted to an administrator account, set the value of its Xirrus-Admin-Role attribute to the desired Privilege Level Name string, as defined in “Admin Privileges” on page 198. For more information about the RADIUS VSAs used by Xirrus, see “RADIUS Vendor Specific Attribute (VSA) for Xirrus” on page 423. When configuring administrator accounts on the RADIUS server, you must observe the same restrictions for length and legal characters as when creating these accounts on the Array using the Admin Management window: the user name and password must be between 5 and 50 characters, inclusive.
Wireless Array Configuring the Wireless Array 201Figure 115. Admin RADIUS Procedure for Configuring Admin RADIUS Use this window to enable/disable administrator authentication via RADIUS, and to set up primary and secondary servers to use for authentication of administrators attempting to log in to the Array. 1. Admin RADIUS Settings: a. Enable Admin RADIUS: Click Yes to enable the use of RADIUS to authenticate administrators logging in to the Array. You will need to specify the RADIUS server(s) to be used. b. Authentication Type: Select the protocol used for authentication of administrators, CHAP or PAP (the default). •PAP (Password Authentication Protocol), is a simple protocol. PAP transmits ASCII passwords over the network “in the clear” (unencrypted) and is therefore considered insecure. •CHAP (Challenge-Handshake Authentication Protocol) is a more secure protocol. The login request is sent using a one-way hash function.c. Timeout (seconds): Define the maximum idle time (in seconds) before the RADIUS server’s session times out. The default is 600 seconds.
Wireless Array202 Configuring the Wireless Array2. Admin RADIUS Primary Server: This is the RADIUS server that you intend to use as your primary server.a. Host Name / IP Address: Enter the IP address or domain name of this external RADIUS server.b. Port Number: Enter the port number of this RADIUS server. The default is 1812.c. Shared Secret / Verify Secret: Enter the shared secret that this RADIUS server will be using, then re-enter the shared secret to verify that you typed it correctly.3. Admin RADIUS Secondary Server (optional): If desired, enter an alternative external RADIUS server. If the primary RADIUS server becomes unreachable, the Array will “failover” to the secondary RADIUS server (defined here).a. Host Name / IP Address: Enter the IP address or domain name of this RADIUS server.b. Port Number: Enter the port number of this RADIUS server. The default is 1812.c. Shared Secret / Verify Secret: Enter the shared secret that this RADIUS server will be using, then re-enter the shared secret to verify that you typed it correctly.The shared secret that you define must match the secret used by the RADIUS server.
Wireless Array Configuring the Wireless Array 203Management ControlThis window allows you to enable or disable the Array management interfaces and set their inactivity time-outs. The supported range is 300 (default) to 100,000 seconds. Figure 116. Management Control Procedure for Configuring Management Control1. Management Settings:a. Maximum login attempts allowed (1-255): After this number of consecutive failing administrator login attempts via ssh or telnet, the Failed login retry period is enforced. The default is 3.
Wireless Array204 Configuring the Wireless Arrayb. Failed login retry period (0-65535 seconds): After the maximum number (defined above) of consecutive failing administrator login attempts via ssh or telnet, the administrator’s IP address is denied access to the array for the specified period of time (in seconds). The default is 0. c. Pre-login Banner: Text that you enter here will be displayed above the WMI login prompt. (Figure 117) Figure 117. Pre-login Bannerd. Post-login Banner: Text that you enter here will be displayed in a message box after a user logs in to the WMI. 2. SSHa. On/Off: Choose On to enable management of the Array over a Secure Shell (SSH-2) connection, or Off to disable this feature. Be aware that only SSH-2 connections are supported by the Array. SSH clients used for connecting to the Array must be configured to use SSH-2. b. Connection Timeout 30-100000 (Seconds): Enter a value in this field to define the timeout (in seconds) before your SSH connection is disconnected. The value you enter here must be between 30 seconds and 100,000 seconds.c. Port: Enter a value in this field to define the port used by SSH. The default port is 22.
Wireless Array Configuring the Wireless Array 2053. Telnet:a. On/Off: Choose On to enable Array management over a Telnet connection, or Off to disable this feature. SSH offers a more secure connection than Telnet, and is recommended over Telnet. b. Connection Timeout 30-100000 (Seconds): Enter a value in this field to define the timeout (in seconds) before your Telnet connection is disconnected. The value you enter here must be between 30 seconds and 100,000 seconds.c. Port: Enter a value in this field to define the port used by Telnet. The default port is 23.4. XirconThe Xircon utility connects to Xirrus Arrays that are not reachable via the normal access methods (such as SSH or WMI) and that do not have a physical console port (XR-1000 models), or whose console port is not accessible. Please see “Securing Low Level Access to the Array” on page 76 for more information about Xircon. You can enable or disable Xircon access to the Array as instructed below. a. On/Off: Choose On to enable Xircon access to the Array at the ArrayOS (CLI) and Xirrus Boot Loader (XBL) levels, or Off to disable access at both levels. On XR-1000 Array models only, Xircon access is On by default. On all other Array models, Xircon access is Off by default. ??XN, too xxx??b. ArrayOS only: Choose this radio button to enable Xircon access at the ArrayOS level only (i.e., Xircon can access CLI only). Access to the Array at the Xirrus Boot Loader (XBL) level is disabled. !Warning: If you disable Xircon access completely on XR-1000 models, you must ensure that you do not lose track of the username and password to log in to CLI/WMI! There is no way to recover from a lost password, other than returning the Array to Xirrus.
Wireless Array206 Configuring the Wireless Arrayc. Boot only: Choose this radio button to enable Xircon access at the Xirrus Boot Loader (XBL) level only. ArrayOS level (CLI) access to the Array is disabled. d. Connection Timeout 30-100000 (Seconds): Enter a value in this field to define the timeout (in seconds) before your Xircon connection is disconnected. The value you enter here must be between 30 seconds and 100,000 seconds.e. Port: Enter a value in this field to define the port used by Xircon. The default port is 22612.5. Seriala. On/Off: Choose On to enable management of the Array via a serial connection, or choose Off to disable this feature.b. Connection Timeout 30-100000 (Seconds): Enter a value in this field to define the timeout (in seconds) before your serial connection is disconnected. The value you enter here must be between 30 seconds and 100,000 seconds.6. HTTPSa. Connection Timeout 30-100000 (Seconds): Enter a value in this field to define the timeout (in seconds) before your HTTPS connection is disconnected. The value you enter here must be between 30 seconds and 100,000 seconds. Management via HTTPS (i.e., the Web Management Interface) cannot be disabled on this window. To disable management over HTTPS, you must use the Command Line Interface. b. Port: Enter a value in this field to define the port used by SSH. The default port is 443.
Wireless Array Configuring the Wireless Array 2077. Management Modesa. Network Assurance: Click the On button to enable this mode. Network assurance checks network connectivity to each server that you configure, such as the NTP server, RADIUS servers, SNMP trap hosts, etc. By proactively identifying network resources that are unavailable, the network manager can be alerted of problems potentially before end-users notice an issue. The distributed intelligence of Arrays provides this monitoring at multiple points across the network, adding to the ability to isolate the problem and expedite the resolutionConnectivity is checked when you configure a server. If a newly configured server is unreachable, you will be notified directly and a Syslog entry is created. Configured servers are checked once per Period which by default is 300 seconds (five minutes). Servers are checked regardless of whether they are configured as IP addresses or host names. If a server becomes unreachable, a Syslog message is generated. When the server again becomes reachable, another Syslog message is generated. To view the status of all configured servers checked by this feature, please see “Network Assurance” on page 106.8. HTTPS (X.509) Certificatea. Import Xirrus Authority into Browser: This feature imports the Xirrus Certificate Authority (CA) into your browser (for a discussion, please see “Certificates and Connecting Securely to the WMI” on page 194). Click the link (xirrus-ca.crt), and then click Open to view or install the current Xirrus CA certificate. Click Install Certificate to start your browser’s Certificate Install Wizard. We recommend that you use this process to install Xirrus as a root authority in your browser. When you assign a Host Name to your Array using the Express Setup window, then the next time you reboot the Array it
Wireless Array208 Configuring the Wireless Arrayautomatically creates a security certificate for that host name. That certificate uses Xirrus as the signing authority. Thus, in order to avoid having certificate errors on your browser when using WMI:•You must have assigned a host name to the Array and rebooted at some time after that.•Use Import Xirrus Authority into Browser•Access WMI by using the host name of the Array rather than its IP address. b. HTTPS (X.509) Certificate Signed By: This read-only field shows the signing authority for the current certificate.9. External Certification AuthorityThis Step and Step 10 allow you to obtain a certificate from an external authority and install it on an Array. “Using an External Certificate Authority” on page 195 discusses reasons for using an external CA. For example, to obtain and install a certificate from VeriSign on the Array, follow these steps:•If you don’t already have the certificate from the external (non-Xirrus) Certificate Authority, see Step 10 to create a request for a certificate. •Use Step 9a to review the request and copy its text to send to Ver iS ig n. •When you receive the new certificate from VeriSign, upload it to the Array using Step 9b. External Certification Authority has the following fields:a. Download Certificate Signing Request: After creating a certificate signing request (.csr file — Step 10), click the View button to review it. If it is satisfactory, click the name of the .csr file to display the text of the request. You can then copy this text and use it as required by the CA. You may also click on the filename of the .csr file to download it to your local computer.
Wireless Array Configuring the Wireless Array 209b. Upload Signed Certificate: To use a custom certificate signed by an authority other than Xirrus, use the Browse button to locate the certificate file, then click Upload to copy it to the Array. The Array’s web server will be restarted and will pick up the new certificate. This will terminate any current web sessions, and you will need to reconnect and re-login to the Array. 10. To create a Certificate Signing Request a. Fill in the fields in this section: Common Name, Organization Name, Organizational Unit Name, Locality (City), State or Province, Country Name, and Email Address. Spaces may be used in any of the fields, except for Common Name, Country Name, or Email Address. Click the Create button to create the certificate signing request. See Step 9 above to use this request. 11. Click Save changes to flash if you wish to make your changes permanent.See AlsoNetwork Interfaces - to enable/disable management over an Ethernet interfaceGlobal Settings (IAP) - to enable/disable management over IAPs Admin ManagementExternal RadiusGlobal Settings (IAP)Internal RadiusAccess Control ListSecurityAccess Control ListThis window allows you to enable or disable the use of the global Access Control List (ACL), which controls whether a station with a particular MAC address may associate to the Array. You may create station access control list entries and delete existing entries, and control the type of list. There is only one global ACL, and you may select whether its type is an Allow List or a Deny List, or whether use of the list is disabled.
Wireless Array210 Configuring the Wireless ArrayThere is also a per-SSID ACL (see “Per-SSID Access Control List” on page 244). If the same MAC address is listed in both the global ACL and in an SSID’s ACL, and if either ACL would deny that station access to that SSID, then access will be denied.Figure 118. Access Control ListProcedure for Configuring Access Control Lists1. Access Control List Type: Select Disabled to disable use of the Access Control List, or select the ACL type — either Allow List or Deny List. •Allow List: Only allows the listed MAC addresses to associate to the Array. All others are denied.•Deny List: Denies the listed MAC addresses permission to associate to the Array. All others are allowed.2. MAC Address: If you want to add a MAC address to the ACL, enter the new MAC address here, then click on the Add button. The MAC address is added to the ACL. You may use a wildcard (*) for one or more digits to match a range of addresses. You may create up to 1000 entries. In addition to these lists, other authentication methods (for example, RADIUS) are still enforced for users.
Wireless Array Configuring the Wireless Array 2113. Delete: You can delete selected MAC addresses from this list by clicking their Delete buttons.4. Click Save changes to flash if you wish to make your changes permanent.See AlsoExternal RadiusGlobal Settings (IAP)Internal RadiusManagement ControlSecurityStation Status Windows (list of stations that have been detected by the Array)
Wireless Array212 Configuring the Wireless ArrayGlobal SettingsThis window allows you to establish the security parameters for your wireless network, including WEP, WPA, WPA2 and RADIUS authentication. When finished, click Save changes to flash if you wish to make your changes permanent.For additional information about wireless network security, refer to “Security Planning” on page 45 and “Understanding Security” on page 191.Figure 119. Global Settings (Security)
Wireless Array Configuring the Wireless Array 213Procedure for Configuring Network Security1. RADIUS Server Mode: Choose the RADIUS server mode you want to use, either Internal or External. Parameters for these modes are configured in “External Radius” on page 216 and “Internal Radius” on page 219. WPA Settings These settings are used if the WPA or WPA2 encryption type is selected on the SSIDs >SSID Management window or the Express Setup window (on this window, encryption type is set in the SSID Settings: Wireless Security field). 2. TKIP Enabled: Choose Yes to enable TKIP (Temporal Key Integrity Protocol), or choose No to disable TKIP.3. AES Enabled: Choose Yes to enable AES (Advanced Encryption Standard), or choose No to disable AES. If both AES and TKIP are enabled, the station determines which will be used. 4. WPA Group Rekey Time (seconds): Enter a value to specify the group rekey time (in seconds). The default is Never.5. WPA Preshared Key / Verify Key: If you enabled PSK, enter a passphrase here, then re-enter the passphrase to verify that you typed it correctly.TKIP encryption does not support high throughput rates (see Improved MAC Throughput), per the IEEE 802.11n specification. TKIP should never be used for WDS links on XR arrays.
Wireless Array214 Configuring the Wireless ArrayWEP SettingsThese settings are used if the WEP encryption type is selected on the SSIDs > SSID Management window or the Express Setup window (on this window, encryption type is set in the SSID Settings: Wireless Security field). Click the Show Cleartext button to make the text that you type in to the Key fields visible.6. Encryption Key 1 / Verify Key 1:Key Size: Key length is automatically computed based on the Encryption Key that you enter•5 ASCII characters (10 hex) for 40 bits (WEP-64)•13 ASCII characters for (26 hex) 104 bits (WEP-128)Encryption Key 1 / Verify Key 1: Enter an encryption key in ASCII or hexadecimal. The ASCII and translated hexadecimal values will appear to the right if you selected the Show Cleartext button. Re-enter the key to verify that you typed it correctly. You may include special ASCII characters, except for the double quote symbol (“). 7. Encryption Key 2 to 4/ Verify Key 2 to 4/ Key Mode/Length (optional): If desired, enter up to four encryption keys, in the same way that you entered the first key.8. Default Key: Choose which key you want to assign as the default key. Make your selection from the pull-down list.WEP encryption does not support high throughput rates or features like frame aggregation or block acknowledgements (see Improved MAC Throughput), per the IEEE 802.11n specification. WEP should never be used for WDS links on Arrays.
Wireless Array Configuring the Wireless Array 2159. Click Save changes to flash if you wish to make your changes permanent.See AlsoAdmin ManagementExternal RadiusInternal RadiusAccess Control ListManagement ControlSecuritySecurity PlanningSSID ManagementAfter configuring network security, the configuration must be applied to an SSID for the new functionality to take effect.
Wireless Array216 Configuring the Wireless ArrayExternal Radius This window allows you to define the parameters of an external RADIUS server for user authentication. To set up an external RADIUS server, you must choose External as the RADIUS server mode in Global Settings. Refer to “Global Settings” on page 212.Figure 120. External RADIUS ServerIf you want to include user group membership in the RADIUS account information for users, see “Understanding Groups” on page 246. User groups allow you to easily apply a uniform configuration to a user on the Array. About Creating User Accounts on the RADIUS Server A number of attributes of user (wireless client) accounts are controlled by RADIUS Vendor Specific Attributes (VSAs) defined by Xirrus. For example, you would use the VSA named Xirrus-User-VLAN if you wish to set the VLAN for a user account in RADIUS. For more information about the RADIUS VSAs used by Xirrus, see “RADIUS Vendor Specific Attribute (VSA) for Xirrus” on page 423.
Wireless Array Configuring the Wireless Array 217Procedure for Configuring an External RADIUS Server1. Primary Server: This is the external RADIUS server that you intend to use as your primary server.a. Host Name / IP Address: Enter the IP address or domain name of this external RADIUS server.b. Port Number: Enter the port number of this external RADIUS server. The default is 1812.c. Shared Secret / Verify Secret: Enter the shared secret that this external RADIUS server will be using, then re-enter the shared secret to verify that you typed it correctly.2. Secondary Server (optional): If desired, enter an alternative external RADIUS server. If the primary RADIUS server becomes unreachable, the Array will “failover” to the secondary RADIUS server (defined here).a. Host Name / IP Address: Enter the IP address or domain name of this external RADIUS server.b. Port Number: Enter the port number of this external RADIUS server. The default is 1812.c. Shared Secret / Verify Secret: Enter the shared secret that this external RADIUS server will be using, then re-enter the shared secret to verify that you typed it correctly.3. Settings: Define the session timeout, the NAS Identifier, and whether accounting will be used. a. Timeout (seconds): Define the maximum idle time (in seconds) before the external RADIUS server’s session times out. The default is 600 seconds.b. NAS Identifier: From the point of view of a RADIUS server, the Array is a client, also called a network access server (NAS). Enter the The shared secret that you define must match the secret used by the external RADIUS server.
Wireless Array218 Configuring the Wireless ArrayNAS Identifier (IP address) that the RADIUS servers expect the Array to use — this is normally the IP address of the Array’s Gigabit1 port. c. Accounting: If you would like the Array to send RADIUS Start, Stop, and Interim records to a RADIUS accounting server, click the Onbutton. The account settings appear, and must be configured. 4. Accounting Settings: Note that RADIUS accounting start packets sent by the Array will include the client station's Framed-IP-Address attribute.a. Accounting Interval (seconds): Specify how often Interim records are to be sent to the server. The default is 300 seconds.b. Primary Server Host Name / IP Address: Enter the IP address or domain name of the primary RADIUS accounting server that you intend to use.c. Primary Port Number: Enter the port number of the primary RADIUS accounting server. The default is 1813.d. Primary Shared Secret / Verify Secret: Enter the shared secret that the primary RADIUS accounting server will be using, then re-enter the shared secret to verify that you typed it correctly.e. Secondary Server Host Name / IP Address (optional): If desired, enter an IP address or domain name for an alternative RADIUS accounting server. If the primary server becomes unreachable, the Array will “failover” to this secondary server (defined here).f. Secondary Port Number: If using a secondary accounting server, enter its port number. The default is 1813.g. Secondary Shared Secret / Verify Secret: If using a secondary accounting server, enter the shared secret that it will be using, then re-enter the shared secret to verify that you typed it correctly.5. Click Save changes to flash if you wish to make your changes permanent.
Wireless Array Configuring the Wireless Array 219See AlsoAdmin ManagementGlobal Settings (IAP)Internal RadiusAccess Control ListManagement ControlSecurityUnderstanding GroupsInternal Radius This window allows you to define the parameters for the Array’s internal RADIUS server for user authentication. However, the internal RADIUS server will only authenticate wireless clients that want to associate to the Array. This can be useful if an external RADIUS server is not available. To set up the internal RADIUS server, you must choose Internal as the RADIUS server mode in Global Settings. Refer to “Global Settings” on page 212.Figure 121. Internal RADIUS Server
Wireless Array220 Configuring the Wireless ArrayProcedure for Creating a New User1. User Name: Enter the name of the user that you want to authenticate to the internal RADIUS server.2. SSID Restriction: (Optional) If you want to restrict this user to associating to a particular SSID, choose an SSID from the pull-down list.3. User Group: (Optional) If you want to make this user a member of a previously defined user group, choose a group from the pull-down list. This will apply all of the user group’s settings to the user. See “Understanding Groups” on page 246. 4. Password: (Optional) Enter a password for the user.5. Verify: (Optional) Retype the user password to verify that you typed it correctly.6. Click on the Create button to add the new user to the list.Procedure for Managing Existing Users1. SSID Restriction: (Optional) If you want to restrict a user to associating to a particular SSID, choose an SSID from its pull-down list.2. User Group: (Optional) If you want to change the user’s group, choose a group from the pull-down list. This will apply all of the user group’s settings to the user. See “Understanding Groups” on page 246. 3. Password: (Optional) Enter a new password for the selected user.Clients using PEAP may have difficulty authenticating to the Array using the Internal RADIUS server due to invalid security certificate errors. To prevent this problem, the user may disable the Validate Server Certificateoption on the station. Do this by displaying the station’s wireless devices and then displaying the properties of the desired wireless interface. In the security properties, disable Validate server certificate. In some systems, this may be found by setting the authentication method to PEAP and changing the associated settings.
Wireless Array Configuring the Wireless Array 2214. Verify Password: (Optional) Retype the user password to verify that you typed it correctly.5. If you want to delete one or more users, click their Delete buttons.6. Click Save changes to flash if you wish to make your changes permanent.See AlsoAdmin ManagementExternal RadiusGlobal Settings (IAP)Access Control ListManagement ControlSecurityUnderstanding Groups
Wireless Array222 Configuring the Wireless ArrayRogue Control ListThis window allows you to set up a control list for rogue APs, based on a type that you define. You may classify rogue APs as blocked, so that the Array will take steps to prevent stations from associating with the blocked AP. See “About Blocking Rogue APs” on page 294. The Array can keep up to 5000 entries in this list. Figure 122. Rogue Control ListThe RF Monitor > Intrusion Detection window provides an alternate method for classifying rogues. You can list all Unknown stations and select all the rogues that you’d like to set to Known or Approved, rather than entering the SSID/BSSID as described below. See “Intrusion Detection” on page 112.
Wireless Array Configuring the Wireless Array 223Procedure for Establishing Rogue AP Control1. Rogue BSSID/SSID: Enter the BSSID, SSID, or manufacturer string to match for the new rogue control entry. The Match Only radio buttons specify what to match (e.g., the MAC address, SSID, or manufacturer). You may use the “*” character as a wildcard to match any string at this position. For example, 00:0f:7d:* matches any string that starts with 00:0f:7d:. Since Xirrus Arrays start with 00:0f:7d:, this applies the Rogue Control Type to all Xirrus Arrays.2. Rogue Control Classification: Enter the classification for the specified rogue AP(s), either Blocked, Known or Approved.3. Match Only: Select the match criterion to compare the Rogue BSSID/SSID string against: BSSID, Manufacturer, or SSID. The BSSID field contains the MAC address. 4. Click Create to add this rogue AP to the Rogue Control List.5. Rogue Control List: If you want to edit the control type for a rogue AP, just click the radio button for the new type for the entry: Blocked, Knownor Approved.6. To delete rogue APs from the list, click their Delete buttons.7. Click Save changes to flash if you wish to make your changes permanent.See AlsoNetwork MapIntrusion DetectionSSIDsSSID Management
Wireless Array224 Configuring the Wireless ArraySSIDsThis status-only window allows you to review SSID (Service Set IDentifier) assignments. It includes the SSID name, whether or not an SSID is visible on the network, any security and QoS parameters defined for each SSID, associated VLAN IDs, radio availability, and DHCP pools defined per SSID. Click on an SSID’s name to jump to the edit page for the SSID. There are no configuration options available on this page, but if you are experiencing problems or reviewing SSID management parameters, you may want to print this page for your records.Figure 123. SSIDs The read-only Limits section of the SSIDs window allows you to review any limitations associated with your defined SSIDs. For example, this window shows the current state of an SSID (enabled or not), how much SSID and station traffic is allowed, time on and time off, days on and off, and whether each SSID is currently active or inactive.For information to help you understand SSIDs and how multiple SSIDs are managed by the Wireless Array, go to “Understanding SSIDs” on page 225 and the Multiple SSIDs section of “Frequently Asked Questions” on page 412. For a description of how QoS operates on the Array, see “Understanding QoS Priority on the Wireless Array” on page 226.For a complete discussion of implementing Voice over Wi-Fi on the Array, see the Xirrus Voice over Wireless Application Note in the Xirrus Resource Center.
Wireless Array Configuring the Wireless Array 225SSIDs are managed with the following windows:“SSID Management” on page 231“Active IAPs” on page 243 SSIDs are discussed in the following topics:“Understanding SSIDs” on page 225“Understanding QoS Priority on the Wireless Array” on page 226Understanding SSIDsThe SSID (Service Set Identifier) is a unique identifier that wireless networking devices use to establish and maintain wireless connectivity. Multiple access points on a network or sub-network can use the same SSIDs. SSIDs are case-sensitive and can contain up to 32 alphanumeric characters (do not include spaces when defining SSIDs).Multiple SSIDsA BSSID (Basic SSID) refers to an individual access point radio and its associated clients. The identifier is the MAC address of the access point radio that forms the BSS. A group of BSSs can be formed to allow stations in one BSS to communicate to stations in another BSS via a backbone that interconnects each access point.The Extended Service Set (ESS) refers to the group of BSSIDs that are grouped together to form one ESS. The ESSID (often referred to as SSID or “wireless network name”) identifies the Extended Service Set. Clients must associate to a single ESS at any given time. Clients ignore traffic from other Extended Service Sets that do not have the same SSID.Legacy access points typically support one SSID per access point. Wireless Arrayssupport the ability to define and use multiple SSIDs simultaneously.Using SSIDsThe creation of different wireless network names allows system administrators to separate types of users with different requirements. The following policies can be tied to an SSID:The wireless security mode needed to join this SSID.
Wireless Array226 Configuring the Wireless ArrayThe wireless Quality of Service (QoS) desired for this SSID.The wired VLAN associated with this SSID.As an example, one SSID named accounting might require the highest level of security, while another named guests might have low security requirements.Another example may define an SSID named voice that supports voice over Wireless LAN phones with the highest Quality of Service (QoS) definition. This SSID might also forward traffic to specific VLANs on the wired network.See AlsoSSID ManagementSSIDsUnderstanding SSIDsUnderstanding QoS Priority on the Wireless Array Figure 124. Four Traffic ClassesFor a complete discussion of implementing Voice over Wi-Fi on the Array, see the Xirrus Voice over Wireless Application Note in the Xirrus Resource Center. Mapping to Traffic ClassFour Transmit QueuesPer queue channel access Application DataVoiceData VideoData Background Data Best Effort DataIAP (Transmit)Highest Priority Lowest Priority
Wireless Array Configuring the Wireless Array 227The Wireless Array’s Quality of Service Priority feature (QoS) allows traffic to be prioritized according to your requirements. For example, you typically assign the highest priority to voice traffic, since this type of traffic requires delay to be under 10 ms. The Array has four separate queues for handling wireless traffic at different priorities, and thus it supports four traffic classes (QoS levels). Figure 125. Priority Level—IEEE 802.1p (Layer 2)IEEE802.1p uses three bits in an Ethernet frame header to define eight priority levels at the MAC level (Layer 2) for wired networks. Each data packet may be tagged with a priority level, i.e., a user priority tag. Since there are eight possible user priority levels and the Array implements four wireless QoS levels, user priorities are mapped to QoS as described below. Figure 126. Priority Level—DSCP (DiffServ - Layer 3)DSCP (Differentiated Services Code Point or DiffServ) uses 6 bits in the IPv4 or IPv6 packet header, defined in RFC2474 and RFC2475. The DSCP value classifies
Wireless Array228 Configuring the Wireless Arraya Layer 3 packet to determine the Quality of Service (QoS) required. DSCP replaces the outdated Type of Service (TOS) field. The description below describes how both of these priority levels are mapped to the Array’s four traffic classes.End-to-End QoS HandlingWired QoS - Ethernet Port:Ingress: Incoming wired packets are assigned QoS priority based on their SSID and 802.1p tag (if any), as shown in the table below. This table follows the mapping recommended by IEEE802.11e. FROMPriority Tag 802.1p (Wired)TOArray QoS (Wireless)Typical Use0 0 (Lowest priority) Best Effort 1 1 Background — explicitly designated as low-priority and non-delay sensitive21Spare 3 0 Excellent Effort42Controlled Load52Video6 3 Voice - requires delay <10ms7 (Highest priority) 3 (Highest priority) Network control
Wireless Array Configuring the Wireless Array 229Egress: Outgoing wired packets are IEEE 802.1p tagged at the Ethernet port for upstream traffic, thus enabling QoS at the edge of the network. Wireless QoS - Radios:Each SSID can be assigned a separate QoS priority (i.e., traffic class) from 0 to 3, where 3 is highest priority and 2 is the default. See “SSID Management” on page 231. If multiple SSIDs are used, packets from the SSID with higher priority are transmitted first. The Array supports IEEE802.11e Wireless QoS for downstream traffic. Higher priority packets wait a shorter time before gaining access to the air and contend less with all other 802.11 devices on a channel. How QoS is set for a packet in case of conflicting values: a. If an SSID has a QoS setting, and an incoming wired packet’s user priority tag is mapped to a higher QoS value, then the higher QoS value is used.b. If a group or filter has a QoS setting, this overrides the QoS value above. See “Groups” on page 246, and “Filters” on page 308. c. Voice packets have the highest priority (see Voice Support, below). d. If DSCP to QoS Mapping Mode is enabled, the IP packet is mapped to QoS level 0 to 3 as specified in the DSCP Mappings table. This value overrides any of the settings in cases a to c above. In particular, by default:•DSCP 8 is set to QoS level 1.FROMArray QoS (Wireless)TOPriority Tag 802.1p (Wired)1 (Lowest priority) 1002 (Default) 53 (Highest priority) 6
Wireless Array230 Configuring the Wireless Array•DSCP 40 is typically used for video traffic and is set to QoS level 2.•DSCP 48 is typically used for voice traffic and is set to QoS level 3—the highest level•All other DSCP values are set to QoS level 0 (the lowest level—Best Effort).Packet Filtering QoS classification Filter rules can be used to redefine the QoS priority level to override defaults. See “Filter Management” on page 311. This allows the QoS priority level to be assigned based on protocol, source, or destination. Voice SupportThe QoS priority implementation on the Array give voice packets the highest priority to support voice applications.
Wireless Array Configuring the Wireless Array 231SSID ManagementThis window allows you to manage SSIDs (create, edit and delete), assign security parameters and VLANs on a per SSID basis, and configure the Web Page Redirect functionality. Figure 127. SSID Management Create new SSID Configure parameters Set traffic limits / usage scheduleConfigure encryption/authenticationConfigure RADIUS server
Wireless Array232 Configuring the Wireless ArrayProcedure for Managing SSIDs 1. New SSID Name: To create a new SSID, enter a new SSID name to the left of the Create button (Figure 127), then click Create. The SSID name may only consist of the characters A-Z, a-z, 0-9, dash, and underscore. You may create up to 16 SSIDs. SSID List (top of page)2. SSID: Shows all currently assigned SSIDs. When you create a new SSID, the SSID name appears in this table. Click any SSID in this list to select it.3. On: Check this box to activate this SSID or clear it to deactivate it.4. Brdcast: Check this box to make the selected SSID visible to all clients on the network. Although the Wireless Array will not broadcast SSIDs that are hidden, clients can still associate to a hidden SSID if they know the SSID name to connect to it. Clear this box if you do not want this SSID to be visible on the network.5. Band: Choose which wireless band the SSID will be beaconed on. Select either 5 GHz — 802.11a(n), 2.4 GHz — 802.11bg(n) or Both.6. VLAN ID / Number: From the pull-down list, select a VLAN that you want this traffic to be forwarded to on the wired network. Select numericto enter the number of a previously defined VLAN in the Number field (see “VLANs” on page 185). This step is optional.7. QoS: (Optional) Select a value in this field for QoS (Quality of Service) priority filtering. The QoS value must be one of the following: •0 — The lowest QoS priority setting, where QoS makes its best effort at filtering and prioritizing data, video and voice traffic without compromising the performance of the network. Use this setting in environments where traffic prioritization is not a concern.•1 — Medium, with QoS prioritization aggregated across all traffic types.•2 — High, normally used to give priority to video traffic.
Wireless Array Configuring the Wireless Array 233•3 — The highest QoS priority setting, normally used to give priority to voice traffic.The QoS setting you define here will prioritize wireless traffic for this SSID over other SSID traffic, as described in “Understanding QoS Priority on the Wireless Array” on page 226. The default value for this field is 2. 8. DHCP Pool: If you want to associate an internal DHCP pool to this SSID, choose the pool from the pull--down list. An internal DHCP pool must be created before it can be assigned. To create an internal DHCP pool, go to “DHCP Server” on page 182.9. Filter List: If you wish to apply a set a filters to this SSID’s traffic, select the desired Filter List. See “Filters” on page 308. 10. Authentication: The following authentication options are available: •Open: This option provides no authentication and is not recommended. •RADIUS MAC: Uses an external RADIUS server to authenticate stations onto the wireless network, based on the user’s MAC address. Accounting for these stations is performed according to the accounting options that you have configured specifically for this SSID or globally (see Step 12 below). •802.1x: Authenticates stations onto the wireless network via a RADIUS server using 802.1x with EAP. The RADIUS server can be internal (provided by the Wireless Array) or external. 11. Encryption: From the pull-down list, choose the encryption that will be required — specific to this SSID — either None, WEP, WPA, WPA2 or WPA-Both. The None option provides no security and is not recommended; WPA2 provides the best practice Wi-Fi security. If this SSID is on a VLAN, the VLAN must have management turned on in order to pass CHAP authentication challenges from the client station to the RADIUS server.
Wireless Array234 Configuring the Wireless ArrayEach SSID supports only one encryption type at a time (except that WPA and WPA2 are both supported on an SSID if you select WPA-Both). If you need to support other encryption types, you must define additional SSIDs. The encryption standard used with WPA or WPA2 is selected in the Security>Global Settings window (page 212). For an overview of the security options, see “Security Planning” on page 45 and “Understanding Security” on page 191. 12. Global: Check the checkbox if you want this SSID to use the security settings established at the global level (refer to “Global Settings” on page 212). Clear the checkbox if you want the settings established here to take precedence. Additional sections will be displayed to allow you to configure encryption, RADIUS, and RADIUS accounting settings. The WPA Configuration encryption settings have the same parameters as those described in “Procedure for Configuring Network Security” on page 213. The external RADIUS and accounting settings are configured in the same way as for an external RADIUS server (see “Procedure for Configuring an External RADIUS Server” on page 217). Note that external RADIUS servers may be specified using IP addresses or domain names.XN model Arrays cannot use the SSID-specific WEP keys specified in this step. They can only use the global WEP keys specified in the Global Settings window.
Wireless Array Configuring the Wireless Array 235.Figure 128. SSID Management 13. Roaming: For this SSID, select whether to enable fast roaming between IAPs or Arrays at L2&L3 (Layer 2 and Layer 3), at L2 (Layer 2 only), or disable roaming (Off). You may only select fast roaming at Layers 2 and 3 if this has been selected in Global Settings (IAP). See “Understanding Fast Roaming” on page 255. 14. WPR (Web Page Redirect): Check the checkbox to enable the Web Page Redirect functionality, or clear it to disable this option. If enabled, WPR configuration fields will be displayed under the SSID Limits section. This feature may be used to provide an alternate mode of authentication, or to simply display a splash screen when a user first associates to the wireless network. After that, it can (optionally) redirect the user to an alternate Set EncryptionConfigure Radius, Accounting
Wireless Array236 Configuring the Wireless ArrayURL. For example, some wireless devices and users may not have a correctly configured 802.1x (RADIUS) supplicant. Utilizing WPR’s Web-based login, users may be authenticated without using an 802.1x supplicant. See “Web Page Redirect Configuration Settings” on page 237 for details of WPR usage and configuration. 15. Fallback: Network Assurance checks network connectivity for the Array. When Network Assurance detects a failure, perhaps due to a bad link or WDS failure, if Fallback is set to Disable the Array will automatically disable this SSID. This will disassociate current clients, and prevent new clients from associating. Since the Array’s network connectivity has failed, this gives clients a chance to connect to other, operational parts of the wireless network. No changes are made to WDS configuration. See Step a on page 207 for more information on Network Assurance.The lower part of the window contains a few sections of additional settings to configure for the currently selected SSID, depending on the values chosen for the settings described above.“SSID Limits” on page 236“Web Page Redirect Configuration Settings” on page 237“WPA Configuration Settings” on page 241“RADIUS Configuration Settings” on page 242SSID LimitsSee “Group Limits” on page 250 for a discussion of the interaction of SSID limits and group limits. To eliminate confusion, we recommend that you configure one set of limits or the other, but not both. 16. Stations: Enter the maximum number of stations allowed on this SSID. This step is optional. Note that the IAPs - Global Settings window also has a station limit option — Max Station Association per IAP. If both When using WPR, it is particularly important to adhere to the SSID naming restrictions detailed in Step 1.
Wireless Array Configuring the Wireless Array 237station limits are set, both will be enforced. As soon as either limit is reached, no new stations can associate until some other station has terminated its association. 17. Overall Traffic: Choose Unlimited if you do not want to place a restriction on the traffic for this SSID, or enter a value in the Packets/Secfield to force a traffic restriction.18. Traffic per Station: Choose Unlimited if you do not want to place a restriction on the traffic per station for this SSID, or enter a value in the Packets/Sec field or the Kbps field to force a traffic restriction. If you set both values, the Array will enforce the limit it reaches first.19. Days Active: Choose Everyday if you want this SSID to be active every day of the week, or select only the specific days that you want this SSID to be active. Days that are not checked are considered to be the inactive days.20. Time Active: Choose Always if you want this SSID active without interruption, or enter values in the Time On and Time Off fields to limit the time that this SSID is active. 21. To delete SSIDs, click their Delete buttons.22. Click Save changes to flash if you wish to make your changes permanent. Web Page Redirect Configuration Settings If you enable WPR, the SSID Management window displays additional fields that must be configured. For example configurations and complete examples, please see the Xirrus Web Page Redirect Application Note in the Xirrus Resource Center. If enabled, WPR displays a splash or login page when a user associates to the wireless network and opens a browser to any URL (provided the URL does not point to a resource directly on the user’s machine). The user-requested URL is captured, the user’s browser is redirected to the splash or login page, and then the browser is redirected either to your specified landing page, if any, or else back to the captured URL. The landing page may be specified for a user group as well. See “Group Management” on page 248. Note that if you change the management
Wireless Array238 Configuring the Wireless ArrayHTTPS port, WPR uses that port, too. See “HTTPS” on page 206. Figure 129. WPR Internal Splash Page Fields (SSID Management) Note that when users roam between Arrays, their WPR Authentication will follow them so that re-authentication is not required. You may select among five different modes for use of the Web Page Redirect feature, each displaying a different set of parameters that must be entered:Internal Login pageThis option displays a login page (residing on the Array) instead of the first user-requested URL. There is an upload function that allows you to replace the default login page, if you wish. Please see “Web Page Redirect” on page 328 for more information. To set up internal login, set Server to Internal Login. Set HTTPS to Onfor a secure login, or select Off to use HTTP. You may also customize the login page with logo and background images and header and footer text. See “Customizing an Internal Login or Splash page” on page 240.The user name and password are obtained by the login page, and authentication occurs according to your configured authentication information (starting with Step 10 on page 233 above). These authentication parameters are configured as described in “Procedure for Configuring Network Security” on page 213.
Wireless Array Configuring the Wireless Array 239After authentication, the browser is redirected back to the captured URL. If you want the user redirected to a specific landing page instead, enter its address in Landing Page URL. Internal Splash pageThis option displays a splash page instead of the first user-requested URL. The splash page files reside on the Array. Note that there is an upload function that allows you to replace the default splash page, if you wish. Please see “Web Page Redirect” on page 328 for more information. You may also customize the splash page with logo and background images and header and footer text. See “Customizing an Internal Login or Splash page” on page 240.To use an internal splash page, set Server to Internal Splash. Enter a value in the Timeout field to define how many seconds the splash screen is displayed before timing out, or select Never to prevent the page from timing out automatically. After the splash page, the user is redirected to the captured URL. If you want the user redirected to a specific landing page instead, enter its address in Landing Page URL. External Login pageThis option redirects the user to a login page on an external web server for authentication, instead of the first user-requested URL. Login information (user name and password) must be obtained by that page, and returned to the Array for authentication. Authentication occurs according to your configured RADIUS information. These parameters are configured as described in “Procedure for Configuring Network Security” on page 213, except that the RADIUS Authentication Type is selected here, as described below. After authentication, the browser is redirected back to the captured URL. If you want the user redirected to a specific landing page instead, enter its address in Landing Page URL. Both the Internal Login and External Login options of WPR perform authentication using your configured RADIUS servers.
Wireless Array240 Configuring the Wireless ArrayTo set up external login page usage, set Server to External Login. Enter the URL of the external web server in Redirect URL, and enter that server’s shared secret in Redirect Secret. Select the RADIUS Authentication Type. This is the protocol used for authentication of users, CHAP or PAP (the default). •PAP (Password Authentication Protocol), is a simple protocol. PAP transmits ASCII passwords over the network “in the clear” (unencrypted) and is therefore considered insecure. •CHAP (Challenge-Handshake Authentication Protocol) is a more secure Protocol. The login request is sent using a one-way hash function.External Splash pageThis option displays a splash page instead of the first user-requested URL. The splash page files reside on an external web server. To set up external splash page usage, set Server to External Splash. Enter the URL of the external web server in Redirect URL, and enter that server’s shared secret in Redirect Secret. After the splash page, the user is redirected to the captured URL. If you want the user redirected to a specific landing page instead, enter its address in Landing Page URL. Landing Page OnlyThis option redirects the user to a specific landing page. If you select this option, enter the desired address in Landing Page URL. Customizing an Internal Login or Splash pageYou may customize these pages with a logo and/or background image, and header and/or footer text, as shown below in Figure 130.
Wireless Array Configuring the Wireless Array 241 Figure 130. Customizing an Internal Login or Splash PageBackground Image — specify an optional jpg, gif, or png file to display in the background of the page. Other customizations (logo, header, footer) will overlay the background, so that it will not be visible in those areas.Logo Image — specify an optional jpg, gif, or png file to display at the top of the page. Header Text File — specify an optional .txt file to display at the top of the page (beneath the logo, if any). Footer Text File — specify an optional .txt file to display at the bottom of the page. WPA Configuration Settings If you set Encryption for this SSID to one of the WPA selections (Step 11 on page 233) and you did not check the Global checkbox (Step 12), this section will be displayed. The WPA Configuration encryption settings have the same parameters as those described in “Procedure for Configuring Network Security” LogoInternal Login PageBackgroundFooterHeader
Wireless Array242 Configuring the Wireless Arrayon page 213RADIUS Configuration Settings The RADIUS settings section will be displayed if you set Authentication (Step 10 on page 233) to RADIUS MAC and you did not check the Global checkbox (Step 12). This means that you wish to set up a RADIUS server to be used for this particular SSID. If Global is checked, then the security settings (including the RADIUS server, if any) established at the global level are used instead (see “Global Settings” on page 212). The RADIUS and accounting settings are configured in the same way as for an external RADIUS server (see “Procedure for Configuring an External RADIUS Server” on page 217).See AlsoDHCP ServerExternal RadiusGlobal Settings (IAP)Internal RadiusSecurity PlanningSSIDsUnderstanding QoS Priority on the Wireless Array
Wireless Array Configuring the Wireless Array 243Active IAPsBy default, when a new SSID is created, that SSID is active on all IAPs. This window allows you to specify which IAPs will offer that SSID. Put differently, you can specify which SSIDs are active on each IAP.This feature is useful in conjunction with WDS. You may use this window to configure the WDS link IAPs so that only the WDS link SSIDs are active on them. Figure 131. Setting Active IAPs per SSIDProcedure for Specifying Active IAPs1. SSID: For a given SSID row, check off the IAPs on which that SSID is to be active. Uncheck any IAPs which should not offer that SSID. 2. All IAPs: This button, in the last column, may be used to deny this SSID on all IAPs. Click again to activate the SSID on all IAPs.3. All SSIDs: This button, in the bottom row, may be used to activate all SSIDs on this IAP. Click again to deny all SSIDs on this IAP.4. Toggle All: This button, on the lower left, may be used to deny all SSIDs on all IAPs. Click again to activate all SSIDs on all IAPs.5. Click Save changes to flash if you wish to make your changes permanent.
Wireless Array244 Configuring the Wireless ArrayPer-SSID Access Control ListThis window allows you to enable or disable the use of the per-SSID Access Control List (ACL), which controls whether a station with a particular MAC address may associate to this SSID. You may create access control list entries and delete existing entries, and control the type of list. There is one ACL per SSID, and you may select whether its type is an Allow List or a Deny List, or whether use of this list is disabled. You may create up to 1000 entries per SSID.There is also a global ACL (see “Access Control List” on page 209). If the same MAC address is listed in both the global ACL and in an SSID’s ACL, and if either ACL would deny that station access to that SSID, then access will be denied.Figure 132. Per-SSID Access Control ListProcedure for Configuring Access Control Lists1. SSID: Select the SSID whose ACL you wish to manage.2. Access Control List Type: Select Disabled to disable use of the Access Control List for this SSID, or select the ACL type — either Allow List or Deny List. •Allow List: Only allows the listed MAC addresses to associate to the Array. All others are denied.•Deny List: Denies the listed MAC addresses permission to associate to the Array. All others are allowed.In addition to these lists, other authentication methods (for example, RADIUS) are still enforced for users.
Wireless Array Configuring the Wireless Array 2453. MAC Address: If you want to add a MAC address to the ACL, enter the new MAC address here, then click the Add button. The MAC address is added to the ACL. You may use a wildcard (*) for one or more digits to match a range of addresses. 4. Delete: You may delete selected MAC addresses from this list by clicking their Delete buttons.5. Delete All: This button, on the upper left, may be used to delete all the MAC entries in an ACL.6. Click Save changes to flash if you wish to make your changes permanent.
Wireless Array246 Configuring the Wireless ArrayGroupsThis is a status-only window that allows you to review user (i.e., wireless client) Group assignments. It includes the group name, Radius ID, Device ID, VLAN IDs and QoS parameters and roaming layer defined for each group, and DHCP pools and web page redirect information defined for the group. You may click on a group’s name to jump to the edit page for the group. There are no configuration options available on this page, but if you are experiencing problems or reviewing group management parameters, you may want to print this page for your records.The Limits section of this window shows any limitations configured for your defined groups. For example, this window shows the current state of a group (enabled or disabled), how much group and per-station traffic is allowed, time on and time off, and days on and off.For information to help you understand groups, see Understanding Groupsbelow. For an in-depth discussion, please see the Xirrus User Groups Application Note in the Xirrus Resource Center. Figure 133. GroupsUnderstanding GroupsUser groups allow administrators to assign specific network parameters to users (wireless clients) through RADIUS privileges rather than having to map users to an SSID tailored for that set of privileges. Groups provide flexible control over user privileges without the need to create large numbers of SSIDs.A group allows you to define a set of parameter values to be applied to selected users. For example, you might define the user group Students, and set its VLAN, security parameters, web page redirect (WPR), and traffic limits. When a new user
Wireless Array Configuring the Wireless Array 247is created, you can apply all of these settings just by making the user a member of the group. The group allows you to apply a uniform configuration to a set of users in one step. In addition, you can restrict the group so that it only applies its settings to group members who are connecting using a specific device type, such as iPad or phone. Thus, you could define a group named Student-Phone with Device ID set to Phone, and set the group’s VLAN Number to 100. This group’s settings will only be applied to group members who connect using a phone, and they will all use VLAN 100. Note that settings for the group in the RADIUS server will override any settings on this WMI page.Almost all of the parameters that can be set for a group are the same as SSID parameters. This allows you to configure features at the user group level, rather than for an entire SSID. If you set parameter values for an SSID, and then enter different values for the same parameters for a user group, the user group values have priority (i.e., group settings will override SSID settings). Group names are case-sensitive and can contain up to 32 alphanumeric characters (do not include spaces when defining Groups).Using GroupsUser accounts are used to authenticate wireless clients that want to associate to the Array. These accounts are established in one of two ways, using the Security> Internal Radius window or the Security> External Radius window. In either case, you may select a user group for the user, and that user group’s settings will apply to the user:Internal Radius — when you add or modify a user entry, select a user group to which the user will belong.External Radius — when you add or modify a user account, specify the Radius ID for the user group to which the user will belong. This must be the same Radius ID that was entered in the Group Management window. When the user is authenticated, the external Radius server will send the Radius ID to the Array. This will allow the Array to identify the group to which the user belongs.
Wireless Array248 Configuring the Wireless ArraySee Also External RadiusInternal RadiusSSIDsUnderstanding QoS Priority on the Wireless ArrayWeb Page Redirect Configuration SettingsUnderstanding Fast RoamingGroup ManagementThis window allows you to manage groups (create, edit and delete), assign usage limits and other parameters on a per group basis, and configure the Web Page Redirect functionality. Figure 134. Group Management Procedure for Managing Groups1. New Group Name: To create a new group, enter a new group name next to the Create button, then click Create. You may create up to 16 groups. To configure and enable this group, proceed with the following steps.2. Group: This column lists currently defined groups. When you create a new group, the group name appears in this list. Click on any group to select it, and then proceed to modify it as desired.
Wireless Array Configuring the Wireless Array 2493. On: Check this box to enable this group or leave it blank to disable it. When a group is disabled, users that are members of the group will behave as if the group did not exist. In other words, the options configured for the SSID will apply to the users, rather than the options configured for the group. 4. Radius ID: Enter a unique Radius ID for the group, to be used on an external Radius server. When adding a user account to the external server, this Radius ID value should be entered for the user. When the user is authenticated, Radius sends this value to the Array. This tells the Array that the user is a member of the group having this Radius ID. 5. Device ID: You may select a device type from this drop-down list, for example, Notebook, phone, iPhone, or Android. This allows you to apply the group settings only if a station authenticates as a user that is a member of the group and the station’s device type matches Device ID. Select none if you do not want to consider the device type. If you have a Radius ID you should not enter a Device ID. 6. VLAN ID: (Optional) From the pull-down list, select a VLAN for this user’s traffic to use. Select numeric and enter the number of a previously defined VLAN (see “VLANs” on page 185). This user group’s VLAN settings supersede Dynamic VLAN settings (which are passed to the Array by the Radius server). To avoid confusion, we recommend that you avoid specifying the VLAN for a user in two places. 7. QoS Priority: (Optional) Select a value in this field for QoS (Quality of Service) priority filtering. The QoS value must be one of the following: •0 — The lowest QoS priority setting, where QoS makes its best effort at filtering and prioritizing data, video and voice traffic without compromising the performance of the network. Use this setting in environments where traffic prioritization is not a concern.•1 — Medium; QoS prioritization is aggregated across all traffic types.•2 — High, normally used to give priority to video traffic.•3 — The highest QoS priority setting, normally used to give priority to voice traffic.
Wireless Array250 Configuring the Wireless ArrayThe QoS setting you define here will prioritize wireless traffic for this group versus other traffic, as described in “Understanding QoS Priority on the Wireless Array” on page 226. The default value for this field is 2. 8. Internal DHCP Pool Assigned: (Optional) To associate an internal DHCP pool to this group, select it from the pull--down list. Only one pool may be assigned. An internal DHCP pool must be created before it can be assigned. To create a DHCP pool, go to “DHCP Server” on page 182.9. Filter List: (Optional) If you wish to apply a set of filters to this user group’s traffic, select the desired Filter List. See “Filters” on page 308. 10. L3: (Optional) For this group, check this box to enable fast roaming between IAPs or Arrays at Layer 2 and Layer 3. If the box is not checked, then roaming uses Layer 2 only. You may only select fast roaming at Layers 2 and 3 if this has been selected in Global Settings (IAP). See “Understanding Fast Roaming” on page 255. 11. WPR (Web Page Redirect): (Optional) Check this box if you wish to enable the Web Page Redirect functionality. This will open a Web Page Redirect details section in the window, where your WPR parameters may be entered. This feature may be used to display a splash screen when a user first associates to the wireless network. After that, it can (optionally) redirect the user to an alternate URL. See “Web Page Redirect Configuration Settings” on page 237 for details of WPR usage and configuration. Note that the Group Management window only allows you to set up an Internal Splash page and a Landing Page URL. The authentication options that are offered on the SSID Management page are not offered here. Since the group membership of a user is provided to the Array by a Radius server, this means the user has already been authenticated. Group LimitsThe Limits section allows you to limit the traffic or connection times allowed for this user group. Note that the IAPs — Global Settings window and the SSID management windows also have options to limit the number of stations, limit
Wireless Array Configuring the Wireless Array 251traffic, and/or limit connection times. If limits are set in more than one place, all limits will be enforced:As soon as any station limit is reached, no new stations can associate until some other station has terminated its association. As soon as any traffic limit is reached, it is enforced. If any connection date/time restriction applies, it is enforced. You can picture this as a logical AND of all restrictions. For example, suppose that a station’s SSID is available MTWTF between 8:00am and 5:00pm, and the User Group is available MWF between 6:00am and 8:00pm, then the station will be allowed on MWF between 8:00am and 5:00pm.To eliminate confusion, we recommend that you configure one set of limits or the other, but not both.12. Stations: Enter the maximum number of stations allowed on this group. The default is 1536. 13. Overall Traffic: Check the Unlimited checkbox if you do not want to place a restriction on the traffic for this group, or enter a value in the Packets/Sec field and make sure that the Unlimited box is unchecked to force a traffic restriction.14. Traffic per Station: Check the Unlimited checkbox if you do not want to place a restriction on the traffic per station for this group, or enter a value in the Packets/Sec or Kbps field and make sure that the Unlimited box is unchecked to force a traffic restriction.15. Days Active: Choose Everyday if you want this group to be active every day of the week, or select only the specific days that you want this group to be active. Days that are not checked are considered to be the inactive days. 16. Time Active: Choose Always if you want this group active without interruption, or enter values in the Time On and Time Off fields to limit the time that group members may associate. 17. To delete an entry, click its Delete button.
Wireless Array252 Configuring the Wireless Array18. Click Save changes to flash if you wish to make your changes permanent. See AlsoDHCP ServerExternal RadiusInternal RadiusSecurity PlanningSSIDs
Wireless Array Configuring the Wireless Array 253IAPsThis status-only window summarizes the status of the Integrated Access Points (radios). For each IAP, it shows whether it is up or down, the channel and wireless mode, the antenna that it is currently using, its cell size and transmit and receive power, how many users (stations) are currently associated to it, whether it is part of a WDS link, and its MAC address.Figure 135. IAPsThe Channel column displays some status information that is not found elsewhere: the source of a channel setting. (Figure 136) If you set a channel manually (via IAP Settings), it will be labeled as manual next to the channel number (Figure 136). If an autochannel operation changed a channel, then it is labeled as auto. If the channel is set to the current factory default setting, the source will be default. This column also shows whether the channel selection is locked, or whether the IAP was automatically switched to this channel because the Array detected the signature of military radar in operation on a conflicting channel. There are no configuration options in this window, but if you are experiencing problems or simply reviewing the IAP assignments, you may print this window for your records. Click any IAP name to open the associated configuration page.
Wireless Array254 Configuring the Wireless ArrayFigure 136. Source of Channel Setting Arrays have a fast roaming feature, allowing them to maintain sessions for applications such as voice, even while users cross boundaries between Arrays. Fast roaming is set up in the Global Settings (IAP) window and is discussed in:“Understanding Fast Roaming” on page 255IAPs are configured using the following windows:“IAP Settings” on page 256“Global Settings (IAP)” on page 261“Global Settings .11an” on page 270“Global Settings .11bgn” on page 274“Global Settings .11n” on page 279“Advanced RF Settings” on page 282“LED Settings” on page 297“DSCP Mappings” on page 298“Roaming Assist” on page 299See AlsoIAP Statistics Summary
Wireless Array Configuring the Wireless Array 255Understanding Fast Roaming To maintain sessions for real-time data traffic, such as voice and video, users must be able to maintain the same IP address through the entire session. With traditional networks, if a user crosses VLAN or subnet boundaries (i.e., roaming between domains), a new IP address must be obtained.Mobile wireless users are likely to cross multiple roaming domains during a single session (especially wireless users of VoIP phones). Layer 3 roaming allows a user to maintain the same IP address through an entire real-time data session. The user may be associated to any of the VLANs defined on the Array. The Layer 3 session is maintained by establishing a tunnel back to the originating Array. You should decide whether or not to use Layer 3 roaming based on your wired network design. Layer 3 roaming incurs extra overhead and may result in additional traffic delays. Fast Roaming is configured on two pages. To enable the fast roaming options that you want to make available on your Array, see Step 22 to Step 24 in “Global Settings (IAP)” on page 261. To choose which of the enabled options are used by an SSID or Group, see “Procedure for Managing SSIDs” on page 232 (Step 13) or “Procedure for Managing Groups” on page 248.
Wireless Array256 Configuring the Wireless ArrayIAP SettingsThis window allows you to enable/disable IAPs, define the wireless mode for each IAP, specify the channel to be used and the cell size for each IAP, lock the channel selection, establish transmit/receive parameters, select antennas, and reset channels. Buttons at the bottom of the list allow you to Reset Channels, Enable All IAPs, or Disable All IAPs. When finished, click Save changes to flash if you wish to make your changes permanent. Figure 137. IAP SettingsYou may also access this window by clicking on the Array image at the lower left of the WMI window — click the orange Xirrus logo in the center of the Array. See “User Interface” on page 83. Procedure for Auto Configuring IAPs You can auto-configure channel and cell size of radios by clicking on the Auto Configure buttons on the relevant WMI page (auto configuration only applies to enabled radios):For all radios, go to “Advanced RF Settings” on page 282.For all 802.11a settings, go to “Global Settings .11an” on page 270.For all 802.11bg settings, go to “Global Settings .11bgn” on page 274.For all 802.11n settings, go to “Global Settings .11n” on page 279.
Wireless Array Configuring the Wireless Array 257Procedure for Manually Configuring IAPs1. In the Enabled column, check the box for an IAP to enable it, or uncheck the box if you want to disable the IAP.In the Band column, select the wireless band for this IAP from the choices available in the pull-down menu, either 2.4GHz or 5 GHz. Choosing the 5GHz band will automatically select an adjacent channel for bonding. If the band displayed is auto, the Band is about to be changed based on a new Channel selection that you made that requires the change. One of the IAPs must be set to monitor mode to support Spectrum Analyzer, Radio Assurance (loopback testing), and Intrusion Detection features. 2. In the WiFi Mode column, select the IEEE 802.11 wireless mode (or combination) that you want to allow on this IAP. The drop-down list will only display the appropriate choices for the selected Band. For example, the 5 GHz band allows you to select an, a-only, or n-only, while 2.4GHz also includes 802.11b and 802.11g choices. When you select a WiFi Mode for an IAP, your selection in the Channel column will be checked to ensure that it is a valid choice for that WiFi Mode. By selecting appropriate WiFi Modes for the radios on your Arrays, you can greatly improve wireless network performance. For example, if you have 802.11b and 802.11n stations using the same IAP, throughput on that radio is reduced greatly for the 802.11n stations. By supporting 802.11b stations only on selected radios in your network, the rest of your 802.11a or 11n radios will have greatly improved performance. Take care to ensure that your network provides adequate coverage for the types of stations that you need to support. 3. In the Channel column, select the channel you want this IAP to use from the channels available in the pull-down list. The list shows the channels available for the IAP selected (depending on which band the IAP is using). Channels that are shown in color indicate conditions that you need to keep in mind:
Wireless Array258 Configuring the Wireless Array•RED — Usage is not recommended, for example, because of overlap with neighboring radios. •YELLOW — The channel has less than optimum separation (some degree of overlap with neighboring radios). •GRAY — The channel is already in use. The channels that are available for assignment to an IAP will differ, depending on the country of operation. If Country is set to United Statesin the Global Settings (IAP) window, then 21 channels are available to 802.11a(n) radios. 4. The Bond column only appears for XR and XN Array models. It works together with the channel bonding options selected on the Global Settings .11n page. Also see the discussion of 802.11n bonding in “Channel Bonding” on page 38.•Channel number — If a channel number appears, then this channel is already bonded to the listed channel. •Off — Do not bond his channel to another channel. •On — Bond this channel to an adjacent channel. The bonded channel is selected automatically by the Array based on the Channel (Step 3). The choice of banded channel is static — fixed once the selection is made. •+1 — Bond this channel to the next higher channel number. Auto Channel bonding does not apply. This option is only available for some of the channels. As mandated by FCC/IC law, Arrays continually scan for signatures of military radar. If such a signature is detected, the Array will switch operation from conflicting channels to new ones. The Array will switch back to the original channel after 30 minutes if the channel is clear. If a radio was turned off because there were no available channels not affected by radar, the Array will now bring that radio back up after 30 minutes if that channel is clear. The 30 minute time frame complies with FCC/IC regulations.
Wireless Array Configuring the Wireless Array 259•-1 — Bond this channel to the next lower channel number. Auto Channel bonding does not apply. This option is only available for some of the channels. 5. Click the Lock check box if you want to lock in your channel selection so that the autochannel operation (see Advanced RF Settings) cannot change it. 6. In the Cell Size column, select auto to allow the optimal cell size to be automatically computed (see also, Step on page 285). To set the cell size yourself, choose either small, medium, large, or max to use the desired pre-configured cell size, or choose manual to define the wireless cell size manually. If you choose Manual, you must specify the transmit and receive power — in dB — in the Tx dBm (transmit) and Rx dBm (receive) fields. The default is max. If you select a value other than auto, the cell size will not be affected by cell size auto configuration.When other Arrays are within listening range of this one, setting cell sizes to Auto allows the Array to change cell sizes so that coverage between cells is maintained. Each cell size is optimized to limit interference between sectors of other Arrays on the same channel. This eliminates the need for a network administrator to manually tune the size of each cell when installing multiple Arrays. In the event that an Array or a radio goes offline, an adjacent Array can increase its cell size to help compensate. The number of users and their applications are major drivers of bandwidth requirements. The network architect must account for the number of users within the Array’s cell diameter. In a large office, or if multiple Arrays are in use, you may choose Small cells to achieve a higher data rate, since walls and other objects will not define the cells naturally. For additional information about cell sizes, go to “Coverage and Capacity Planning” on page 26.
Wireless Array260 Configuring the Wireless Array7. If you are using WDS to provide backhaul over an extended distance, use WDS Dist. (Miles) to prevent timeout problems associated with long transmission times. Set the approximate distance in miles between this IAP and the connected Array in this column. This increases the wait time for frame transmission accordingly. 8. In the Antenna Select column, choose the antenna you want this radio to use from the pull-down list. The list of available antennas will be different (or no choices will be available), depending on the wireless mode you selected for the IAP.9. If desired, enter a description for this IAP in the Description field. 10. You may reset all of the enabled IAPs by clicking the Reset Channelsbutton at the bottom of the list. A message will inform you that all enabled radios have been taken down and brought back up. 11. Buttons at the bottom of the list allow you to Enable All IAPs or Disable All IAPs. 12. Click Save changes to flash if you wish to make your changes permanent.See AlsoCoverage and Capacity PlanningGlobal Settings (IAP)Global Settings .11anGlobal Settings .11bgn
Wireless Array Configuring the Wireless Array 261Global Settings .11nIAPsIAP Statistics SummaryLED SettingsGlobal Settings (IAP) This window allows you to establish global IAP settings. Global IAP settings include enabling or disabling all IAPs (regardless of their operating mode), and changing settings for beacons, station management, and advanced traffic optimization — including multicast processing, load balancing, and roaming. Changes you make on this page are applied to all IAPs, without exception. Figure 138. Global Settings (IAPs)
Wireless Array262 Configuring the Wireless ArrayProcedure for Configuring Global IAP Settings1. Country: This is a display-only value. Once a country has been set, it may not be changed. The channels that are available for assignment to an IAP will differ, depending on the country of operation. If Country is set to United States, then 21 channels are available for 802.11a/n. If no country is displayed, the channel set defaults to channels and power levels that are legal worldwide — this set only includes the lower eight 5 GHz channels. 2. IAP Control: Click on the Enable All IAPs button to enable all IAPs for this Array, or click on the Disable All IAPs button to disable all IAPs.3. Short Retries: This sets the maximum number of transmission attempts for a frame, the length of which is less than or equal to the RTS Threshold, before a failure condition is indicated. The default value is 7. Enter a new value (1 to 128) in the Short Retry Limit field if you want to increase or decrease this attribute.4. Long Retries: This sets the maximum number of transmission attempts for a frame, the length of which is greater than the RTS Threshold, before a failure condition is indicated. The default value is 4. Enter a new value (1 to 128) in the Long Retry Limit field if you want to increase or decrease this attribute.5. Wi-Fi Alliance Mode: Set this On if you need Array behavior to conform completely to Wi-Fi Alliance standards. This mode is normally set to Off. Some of the features below, such as Load Balancing, are only available if the Array’s license includes the Xirrus Advanced RF Performance Manager (RPM). If a setting is unavailable (grayed out), then your license does not support the feature. See “About Licensing and Upgrades” on page 321.
Wireless Array Configuring the Wireless Array 263Beacon Configuration6. Beacon Interval: When the Array sends a beacon, it includes with it a beacon interval, which specifies the period of time before it will send the beacon again. Enter the desired value in the Beacon Interval field, between 20 and 1000 Kusecs. A Kusec is 1000 microseconds = 1 millisecond. The value you enter here is applied to all IAPs.7. DTIM Period: A DTIM (Delivery Traffic Indication Message) is a signal sent as part of a beacon by the Array to a client device in sleep mode, alerting the device to broadcast traffic awaiting delivery. The DTIM Period is a multiple of the Beacon Interval, and it determines how often DTIMs are sent out. By default, the DTIM period is 1, which means that it is the same as the beacon interval. Enter the desired multiple, between 1 and 255. The value you enter here is applied to all IAPs.8. 802.11h Beacon Support: This option enables beacons on all of the Array’s radios to conform to 802.11h requirements, supporting dynamic frequency selection (DFS) and transmit power control (TPC) to satisfy regulatory requirements for operation in Europe. 9. WMM Power Save: Click On to enable Wireless Multimedia Power Save support, as defined in IEEE802.11e. This option saves power and increases battery life by allowing the client device to doze between packets to save power, while the Array buffers downlink frames.Station Management10. Station Re-Authentication Period: This specifies an interval (in seconds) for station reauthentications. This is the minimum time period between station authentication attempts, enforced by the Array. This feature is part of the Xirrus Advanced RF Security Manager (RSM). 11. Station Timeout Period: Specify a time (in seconds) in this field to define the timeout period for station associations.
Wireless Array264 Configuring the Wireless Array12. Max Station Association per Array: This option allows you to define how many station associations are allowed per Array (up to 2000 stations per Array). Note that the Max Station Association per IAP limit (below) may not be exceeded. If you have an unlicensed Array, this value is set to 1, which simply allows you to test the ability to connect to the Array. 13. Max Station Association per IAP: This defines how many station associations are allowed per IAP. Note that the SSIDs — SSID Management window also has a station limit option — Station Limit(page 236). If both station limits are set, both will be enforced. As soon as either limit is reached, no new stations can associate until some other station has terminated its association. 14. Max Phones per IAP: This option allows you to control the maximum number of phones that are allowed per IAP. The default is set to a maximum of 16 but you can reduce this number, as desired. Enter a value in this field between 0 (no phones allowed) and 16.15. Block Inter-Station Traffic: This option allows you to block or allow traffic between wireless clients that are associated to the Array. Choose either Yes (to block traffic) or No (to allow traffic).16. Allow Over Air Management: Choose Yes to enable management of the Array via the IAPs, or choose No (recommended) to disable this feature. Advanced Traffic Optimization17. Multicast Processing: This sets how multicast traffic is handled. Multicast traffic can be received by a number of subscribing stations at the same time, thus saving a great deal of bandwidth. In some of the options below, the Array uses IGMP snooping to determine the stations that are subscribed to the multicast traffic. IGMP (Internet Group Management Protocol) is used to establish and manage the membership of multicast groups. This admission control feature applies only to Spectralink phones. It does not apply to all VoIP phones in general.
Wireless Array Configuring the Wireless Array 265Multicast packet handling options are only applicable to downstream traffic transmitted from the Array to wireless stations. Select one of the following options:•Send multicasts unmodified. This option is useful when multicast is not needed because no video or audio streaming is required or when it is used only for discovering services in the network. An example of this type of multicast usage is the Bonjour protocol used by AppleOS devices.The next three options convert multicast to unicast. Packets are sent directly to the stations at the best possible data rates. Because they are unicast packets, they will also benefit from 802.11 acknowledges. This approach significantly improves the quality of the voice and video multicast streams.•Convert to unicast and send unicast packets to all stations. This option is useful when you need to stream voice or video traffic and none of the associated stations have the capability to subscribe to the multicast group through the use of IGMP join messages, but all of them need to receive the stream with good quality.•Convert to unicast, snoop IGMP, and only send to stations subscribed (send as multicast if no subscription). This option is useful when you need to stream voice or video multicast traffic to all stations, but some stations are capable of subscribing to multicast groups while other stations are not. The stations that do not subscribe will not benefit from conversion to unicast; their video or voice quality may be compromised. •Convert to unicast, snoop IGMP, and only send to stations subscribed (don't send packet if no subscription). This option is useful in well controlled environments when you need to stream voice or video multicast traffic only to stations that are capable of subscribing to multicast groups and there is no need for the rest of the stations to receive the data stream.
Wireless Array266 Configuring the Wireless Array18. Multicast Exclude: This is a list of multicast IP addresses that will not be subject to multicast-to-unicast conversion. This list is useful on networks where applications such as those using multicast Domain Name System (mDNS) are in use. For example, Apple Bonjour finds local network devices such as printers or other computers using mDNS. By default, thelist contains the IP address for Apple Bonjour / mDNS: 224.0.0.251. To add a new IP address to the list, type it in the top field and click the Add button to its right. You may only enter IP addresses - host names are not allowed. To remove an entry, select it in the list and click Delete. To remove all entries from the list, click Reset. 19. Broadcast Rates: This changes the rates of broadcast traffic sent by the Array (including beacons). When set to Optimized, each broadcast or multicast packet that is transmitted on each radio is sent at the lowest transmit rate used by any client associated to that radio at that time. This results in each IAP broadcasting at the highest Array TX data rate that can be heard by all associated stations, improving system performance. The rate is determined dynamically to ensure the best broadcast/multicast performance possible. The benefit is dramatic. Consider a properly designed network (having -70db or better everywhere), where virtually every client should have a 54Mbps connection. In this case, broadcasts and multicasts will all go out at 54Mbps vs. the standard rate. Thus, with broadcast rate optimization on, broadcasts and multicasts use between 2% and 10% of the bandwidth that they would in Standard mode.When set to Standard (the default), broadcasts are sent out at the lowest basic rate only — 6 Mbps for 5GHz clients, or 1 Mbps for 2.4GHz clients. The option you select here is applied to all IAPs.20. Load Balancing: The Xirrus Wireless Array supports an automatic load balancing feature designed to distribute wireless stations across multiple radios rather than having stations associate to the closest radios with the strongest signal strength, as they normally would. In wireless networks, the station decides to which radio it will associate. The Array cannot actually force load balancing, however the Array can “encourage” stations to associate in a more uniform fashion across all of the radios of
Wireless Array Configuring the Wireless Array 267the Array. This option enables or disables active load balancing between the Array IAPs. For an in-depth discussion, see the Xirrus Station Load Balancing Application Note in the Xirrus Resource Center. If you select On and an IAP is overloaded, that IAP will send an “AP Full” message in response to Probe, Association, or Authentication requests. This prevents determined clients from forcing their way onto overloaded IAPs. Note that some clients are so determined to associate to a particular IAP that they will not try to associate to another IAP, and thus they never get on the network.Choose Off to disable load balancing. 21. ARP Filtering: Address Resolution Protocol finds the MAC address of a device with a given IP address by sending out a broadcast message requesting this information. ARP filtering allows you to reduce the proliferation of ARP messages by restricting how they are forwarded across the network. You may select from the following options for handling ARP requests:•Off: ARP filtering is disabled. ARP requests are broadcast to radios that have stations associated to them. •Pass-thru: The Array forwards the ARP request. It passes along only ARP messages that target the stations that are associated to it. This is the default value. •Proxy: The Array replies on behalf of the stations that are associated to it. The ARP request is not broadcast to the stations. Note that the Array has a broadcast optimization feature that is always on (it is not configurable). Broadcast optimization restricts all broadcast packets (not just ARP broadcasts) to only those radios that need to forward them. For instance, if a broadcast comes in from VLAN 10, and there are no VLAN 10 users on a radio, then that radio will not send out that broadcast. This increases available air time for other traffic.
Wireless Array268 Configuring the Wireless Array22. Xirrus Roaming Layer: Select whether to enable roaming capabilities between IAPs or Arrays at Layer 2 and 3, or at Layer 2 only. Depending on your wired network, you may wish to allow fast roaming at Layer 3. This may result in delayed traffic. 23. Xirrus Roaming Mode: This feature utilizes the Xirrus Roaming Protocol (XRP) ensuring fast and seamless roaming capabilities between IAPs or Arrays at Layer 2 and Layer 3 (as specified in Step 24), while maintaining security. Fast roaming eliminates long delays for re-authentication, thus supporting time-sensitive applications such as Voice over Wi-Fi (see “Understanding Fast Roaming” on page 255 for a discussion of this feature). XRP uses a discovery process to identify other Xirrus Arrays as fast roaming targets. This process has two modes:•Broadcast — the Array uses a broadcast technique to discover other Arrays that may be targets for fast roaming. •Tunneled — in this Layer 3 technique, fast roaming target Arrays must be explicitly specified. To enable fast roaming, choose Broadcast or Tu n n e l e d , and set additional fast roaming attributes (Step 24). To disable fast roaming, choose Off. If you enable Fast Roaming, the following ports cannot be blocked:•Port 22610 — reserved for Layer 2 roaming using UDP to share PMK information between Arrays.•Ports 15000 to 17999 — reserved for Layer 3 roaming (tunneling between subnets).24. Share Roaming Info With: Three options allow your Array to share roaming information with all Arrays; just with those that are within range; or with specifically targeted Arrays. Choose either All, In Rangeor Tar g et Only, respectively.a. Xirrus Roaming Targets: If you chose Ta r g e t O nl y, use this option to add target MAC addresses. Enter the MAC address of each target Array, then click on Add (add as many targets as you like). To find a target’s MAC address, open the Array Info window on the target
Wireless Array Configuring the Wireless Array 269Array and look for IAP MAC Range, then use the starting address of this range. To delete a target, select it from the list, then click Delete.See AlsoCoverage and Capacity PlanningGlobal Settings .11anGlobal Settings .11bgnGlobal Settings .11nAdvanced RF SettingsIAPsIAP Statistics SummaryLED SettingsIAP Settings
Wireless Array270 Configuring the Wireless ArrayGlobal Settings .11anThis window allows you to establish global 802.11a IAP settings. These settings include defining which 802.11a data rates are supported, enabling or disabling all 802.11a IAPs, auto-configuration of channel allocations for all 802.11a IAPs, and specifying the fragmentation and RTS thresholds for all 802.11a IAPs.Figure 139. Global Settings .11anProcedure for Configuring Global 802.11a IAP Settings1. 802.11a Data Rates: The Array allows you to define which data rates are supported for all 802.11a radios. Select (or deselect) data rates by clicking in the corresponding Supported and Basic data rate check boxes. Some of the features below, such as Auto Configure for Cell Size and Channel Configuration, are only available if the Array’s license includes the Xirrus Advanced RF Performance Manager (RPM). If a setting is unavailable (grayed out), then your license does not support the feature. Please see “About Licensing and Upgrades” on page 321.
Wireless Array Configuring the Wireless Array 271•Basic Rate — a wireless station (client) must support this rate in order to associate.•Supported Rate — data rates that can be used to transmit to clients.2. Data Rate Presets: The Wireless Array can optimize your 802.11a data rates automatically, based on range or throughput. Click Optimize Rangeto optimize data rates based on range, or click Optimize Throughput to optimize data rates based on throughput. The Restore Defaults button will take you back to the factory default rate settings.3. 802.11a IAP Control: Click Enable 802.11a IAPs to enable all 802.11a IAPs for this Array, or click Disable 802.11a IAPs to disable all 802.11a IAPs.4. Channel Configuration: Click Auto Configure to instruct the Array to determine the best channel allocation settings for each 802.11a IAP and select the channel automatically, based on changes in the environment.This is the recommended method for 802.11a channel allocation (see “RF Spectrum Management” on page 287). Use Factory Defaults to take you back to the factory default channel settings. The following options may be selected for auto configuration: •Negotiate: negotiate air-time with other Arrays before performing a full scan.•Full Scan: perform a full traffic scan on all channels on all IAPs to determine the best channel allocation.•Non-Radar: give preference to channels without radar-detect.•Include WDS: automatically assign 5GHz to WDS client links.To use the Auto Cell Size feature, the following additional settings are required: RF Monitor Mode must be turned On. See “RF Monitor” on page 283 One of the radios must be in monitor mode with the default RxdBm setting of -95, and all other IAPs that will use Auto Cell must have Cell Size set to auto. See “Procedure for Manually Configuring IAPs” on page 257.
Wireless Array272 Configuring the Wireless Array5. Set Cell Size: Cell Size may be set globally for all 802.11a IAPs to Auto, Large, Medium, Small, or Max using the buttons. For an overview of RF power and cell size settings, please see “RF Power & Sensitivity” on page 285, “Capacity and Cell Sizes” on page 28, and “Fine Tuning Cell Sizes” on page 29. 6. Auto Cell Period (seconds): You may set up auto-configuration to run periodically, readjusting optimal cell sizes for the current conditions. Enter a number of seconds to specify how often auto-configuration will run. If you select None, then auto-configuration of cell sizing will not be run periodically. You do not need to run Auto Cell often unless there are a lot of changes in the environment. If the RF environment is changing often, running Auto Cell every twenty-four hours (86400 seconds) should be sufficient). The default value is None.7. Auto Cell Size Overlap (%): Enter the percentage of cell overlap that will be allowed when the Array is determining automatic cell sizes. For 100% overlap, the power is adjusted such that neighboring Arrays that hear each other best will hear each other at -70dB. For 0% overlap, that number is -90dB. The default value is 50%.8. Auto Cell Min Cell Size: Use this setting if you wish to set the minimum cell size that Auto Cell may assign. The values are Default, Large, Medium, or Small.9. Auto Cell Min Tx Power (dBm): Enter the minimum transmit power that the Array can assign to a radio when adjusting automatic cell sizes. The default value is 10.10. Auto Cell Configuration: Click this button to instruct the Array to determine and set the best cell size for each 802.11a IAP whose Cell Sizeis auto on the IAP Settings window, based on changes in the environment. This is the recommended method for setting cell size. You may look at the Tx and Rx values on the IAP Settings window to view the cell size settings that were applied.
Wireless Array Configuring the Wireless Array 27311. Fragmentation Threshold: This is the maximum size for directed data packets transmitted over the 802.11a radio. Larger frames fragment into several packets, their maximum size defined by the value you enter here. Smaller fragmentation numbers can help to “squeeze” packets through in noisy environments. Enter the desired Fragmentation Threshold value in this field, between 256 and 2346.12. RTS Threshold: The RTS (Request To Send) Threshold specifies the packet size. Packets larger than the RTS threshold will use CTS/RTS prior to transmitting the packet — useful for larger packets to help ensure the success of their transmission. Enter a value between 1 and 2347.See AlsoCoverage and Capacity PlanningGlobal Settings (IAP)Global Settings .11bgnGlobal Settings .11nIAPsIAP Statistics SummaryAdvanced RF SettingsIAP Settings
Wireless Array274 Configuring the Wireless ArrayGlobal Settings .11bgnThis window allows you to establish global 802.11b/g IAP settings. These settings include defining which 802.11b and 802.11g data rates are supported, enabling or disabling all 802.11b/g IAPs, auto-configuring 802.11b/g IAP channel allocations, and specifying the fragmentation and RTS thresholds for all 802.11b/g IAPs.Figure 140. Global Settings .11bgnSome of the features below, such as Auto Configure for Cell Size and Channel Configuration, are only available if the Array’s license includes the Xirrus Advanced RF Performance Manager (RPM). If a setting is unavailable (grayed out), then your license does not support the feature. Please see “About Licensing and Upgrades” on page 321.
Wireless Array Configuring the Wireless Array 275Procedure for Configuring Global 802.11b/g IAP Settings1. 802.11g Data Rates: The Array allows you to define which data rates are supported for all 802.11g radios. Select (or deselect) 11g data rates by clicking in the corresponding Supported and Basic data rate check boxes.•Basic Rate — a wireless station (client) must support this rate in order to associate.•Supported Rate — data rates that can be used to transmit to clients. 2. 802.11b Data Rates: This task is similar to Step 1, but these data rates apply only to 802.11b IAPs.3. Data Rate Presets: The Wireless Array can optimize your 802.11b/g data rates automatically, based on range or throughput. Click Optimize Rangebutton to optimize data rates based on range, or click on the Optimize Throughput to optimize data rates based on throughput. Restore Defaults will take you back to the factory default rate settings.4. 802.11b/g IAP Control: Click Enable All 802.11b/g IAPs to enable all 802.11b/g IAPs for this Array, or click Disable All 802.11b/g IAPs to disable them. 5. Channel Configuration: Click Auto Configure to instruct the Array to determine the best channel allocation settings for each 802.11b/g IAP and select the channel automatically, based on changes in the environment. This is the recommended method for 802.11a channel allocation (see “RF Spectrum Management” on page 287). Use Factory Defaults to take you back to the factory default channel settings. The following options may be selected for auto configuration: •Negotiate: negotiate air-time with other Arrays before performing a full scan.•Full Scan: perform a full traffic scan on all channels on all IAPs to determine the best channel allocation.•Non-Radar: give preference to channels without radar-detect.•Include WDS: automatically assign 5GHz to WDS client links.
Wireless Array276 Configuring the Wireless Array6. Set Cell Size/ Autoconfigure: Cell Size may be set globally for all 802.11b/g IAPs to auto, large, medium, small, or max using the drop down menu. For an overview of RF power and cell size settings, please see “RF Power & Sensitivity” on page 285, “Capacity and Cell Sizes” on page 28, and “Fine Tuning Cell Sizes” on page 29. 7. Auto Cell Period (seconds): You may set up auto-configuration to run periodically, readjusting optimal cell sizes for the current conditions. Enter a number of seconds to specify how often auto-configuration will run. If you select None, then auto-configuration of cell sizing will not be run periodically. You do not need to run Auto Cell often unless there are a lot of changes in the environment. If the RF environment is changing often, running Auto Cell every twenty-four hours (86400 seconds) should be sufficient). The default value is None.8. Auto Cell Size Overlap (%): Enter the percentage of cell overlap that will be allowed when the Array is determining automatic cell sizes. For 100% overlap, the power is adjusted such that neighboring Arrays that hear each other best will hear each other at -70dB. For 0% overlap, that number is -90dB. The default value is 50%.9. Auto Cell Min Cell Size: Use this setting if you wish to set the minimum cell size that Auto Cell may assign. The values are Default, Large, Medium, or Small.To use the Auto Cell Size feature, the following additional settings are required: RF Monitor Mode must be turned On. See “RF Monitor” on page 283 One of the radios must be in monitor mode with the default RxdBm setting of -95, and all other IAPs that will use Auto Cell must have Cell Size set to auto. See “Procedure for Manually Configuring IAPs” on page 257.
Wireless Array Configuring the Wireless Array 27710. Auto Cell Min Tx Power (dBm): Enter the minimum transmit power that the Array can assign to a radio when adjusting automatic cell sizes. The default value is 10.11. Auto Cell Configuration: Click Auto Configure to instruct the Array to determine and set the best cell size for each enabled 802.11b/g IAP whose Cell Size is auto on the IAP Settings window, based on changes in the environment. This is the recommended method for setting cell size. You may look at the Tx and Rx values on the IAP Settings window to view the cell size settings that were applied. 12. 802.11g Only: Choose On to restrict use to 802.11g mode only. In this mode, no 802.11b rates are transmitted. Stations that only support 802.11b will not be able to associate.13. 802.11g Protection: You should select Auto CTS or Auto RTS to provide automatic protection for all 802.11g radios in mixed networks (802.11 b and g). You may select Off to disable this feature, but this is not recommended. Protection allows 802.11g stations to share an IAP with older, slower 802.11b stations. Protection avoids collisions by preventing 802.11b and 802.11g stations from transmitting simultaneously. When Auto CTS or Auto RTS is enabled and any 802.11b station is associated to the IAP, additional frames are sent to gain access to the wireless network. •Auto CTS requires 802.11g stations to send a slow Clear To Send frame that locks out other stations. Automatic protection reduces 802.11g throughput when 802.11b stations are present — Auto CTS adds less overhead than Auto RTS. The default value is Auto CTS. •With Auto RTS, 802.11g stations reserve the wireless media using a Request To Send/Clear To Send cycle. This mode is useful when you have dispersed nodes. It was originally used in 802.11b only networks to avoid collisions from “hidden nodes” — nodes that are so widely dispersed that they can hear the Array, but not each other. When there are no 11b stations associated and an auto-protection mode is enabled, the Array will not send the extra frames, thus avoiding unnecessary overhead.
Wireless Array278 Configuring the Wireless Array14. 802.11g Slot: Choose Auto to instruct the Array to manage the 802.11g slot times automatically, or choose Short Only. Xirrus recommends using Auto for this setting, especially if 802.11b devices are present.15. 802.11b Preamble: The preamble contains information that the Array and client devices need when sending and receiving packets. All compliant 802.11b systems have to support the long preamble. A short preamble improves the efficiency of a network's throughput when transmitting special data, such as voice, VoIP (Voice-over IP) and streaming video. Select Auto to instruct the Array to manage the preamble (long and short) automatically, or choose Long Only.16. Fragmentation Threshold: This is the maximum size for directed data packets transmitted over the 802.11b/g IAP. Larger frames fragment into several packets, their maximum size defined by the value you enter here. Enter the desired Fragmentation Threshold value, between 256 and 2346.17. RTS Threshold: The RTS (Request To Send) Threshold specifies the packet size. Packets larger than the RTS threshold will use CTS/RTS prior to transmitting the packet — useful for larger packets to help ensure the success of their transmission. Enter a value between 1 and 2347.See AlsoCoverage and Capacity PlanningGlobal Settings (IAP)Global Settings .11anGlobal Settings .11nAdvanced RF SettingsLED SettingsIAP SettingsIAP Statistics Summary
Wireless Array Configuring the Wireless Array 279Global Settings .11nThis window is displayed only for XN Array models. It allows you to establish global 802.11n IAP settings. These settings include enabling or disabling 802.11n mode for the entire Array, specifying the number of transmit and receive chains (data stream) used for spatial multiplexing, setting a short or standard guard interval, auto-configuring channel bonding, and specifying whether auto-configured channel bonding will be static or dynamic.Before changing your settings for 802.11n, please read the discussion in “IEEE 802.11n Deployment Considerations” on page 35. Figure 141. Global Settings .11n
Wireless Array280 Configuring the Wireless ArrayProcedure for Configuring Global 802.11n IAP Settings1. 802.11n Data Rates: The Array allows you to define which data rates are supported for all 802.11n radios. Select (or deselect) 11n data rates by clicking in the corresponding Supported and Basic data rate check boxes.•Basic Rate — a wireless station (client) must support this rate in order to associate.•Supported Rate — data rates that can be used to transmit to clients.2. 802.11n Mode: Select Enabled to operate in 802.11n mode, with four 802.11b/g/n mode ports and the remaining IAPs operating in 802.11a/n mode. Use of this mode is controlled by the Array’s license key. The key must include 802.11n capability, or you will not be able to enable this mode. See “License” on page 100 to view the features supported by your license key. Contact Xirrus Customer support for questions about your license. 3. If you select Disabled, then 802.11n operation is disabled on the Array. TX Chains: Select the number of separate data streams transmitted by the antennas of each IAP. The default is 3. See “Multiple Data Streams — Spatial Multiplexing” on page 37.4. RX Chains: Select the number of separate data streams received by the antennas of each IAP. This number should be greater than or equal to TX Chains. The default is 3. See “Multiple Data Streams — Spatial Multiplexing” on page 37.5. Guard interval: Select Short to increase the data transmission rate by decreasing wait intervals in signal transmission. Select Long to use the standard interval. The default is Short. See “Short Guard Interval” on page 39.802.11n operation is allowed only if the Array’s license includes this feature. Please see “About Licensing and Upgrades” on page 321.
Wireless Array Configuring the Wireless Array 2816. Auto bond 5 GHz channels: Select Enabled to use Channel Bonding on 5 GHz channels and automatically select the best channels for bonding. The default is Enabled. See “Channel Bonding” on page 38.7. 5 GHz channel bonding: Select Dynamic to have auto-configuration for bonded 5 GHz channels be automatically updated as conditions change. For example, if there are too many clients to be supported by a bonded channel, dynamic mode will automatically break the bonded channel into two channels. Select Static to have the bonded channels remain the same once they are selected. The Dynamic option is only available when Auto bond 5 GHz channels is enabled. The default is Dynamic. See “Channel Bonding” on page 38.8. 2.4 GHz channel bonding: Select Dynamic to have auto-configuration for bonded 2.4 GHz channels be automatically updated as conditions change. Select Static to have the bonded channels remain the same once they are selected. The default is Dynamic. See “Channel Bonding” on page 38.9. Global channel bonding: These buttons allow you to turn channel bonding on or off for all IAPs in one step. The effect of using one of these buttons will be shown if you go to the IAP Settings window and look at the Bond column. Clicking Enable bonding on all IAPs causes all IAPs to be bonded to their auto-bonding channel immediately, if appropriate. For example, an IAP will not be bonded if it is set to monitor mode, and 2.4 GHz radios will not be bonded. Click Disable bonding on all IAPs to turn off bonding on all IAPs immediately. See “Channel Bonding” on page 38. Settings in Step 7 and Step 8 are independent of global channel bonding.
Wireless Array282 Configuring the Wireless ArrayAdvanced RF SettingsThis window allows you to establish RF settings, including automatically configuring channel allocation and cell size, and configuring radio assurance and standby modes. Changes you make on this page are applied to all IAPs, without exception. Figure 142. Advanced RF Settings About Standby ModeStandby Mode supports the Array-to-Array fail-over capability. When you enable Standby Mode, the Array functions as a backup unit, and it enables its radios if it detects that its designated target Array has failed. The use of redundant Arrays to provide this fail-over capability allows Arrays to be used in mission-critical
Wireless Array Configuring the Wireless Array 283applications. In Standby Mode, an Array monitors beacons from the target Array. When the target has not been heard from for 40 seconds, the standby Array enables its radios until it detects that the target Array has come back online. Standby Mode is off by default. Note that you must ensure that the configuration of the standby Array is correct. This window allows you to enable or disable Standby Mode and specify the primary Array that is the target of the backup unit. See also, “Failover Planning” on page 41. Procedure for Configuring Advanced RF SettingsRF Monitor1. RF Monitor Mode: RF monitoring permits the operation of features like intrusion detection. The monitor may operate in Dedicated mode, or in Timeshare mode which allows the radio to divide its time between monitoring and acting as a standard radio that allows stations to associate to it. If Timeshare mode is selected, you may adjust the following settings:•Timeshare Scanning Interval (6-600): number of seconds between monitor (off-channel) scans.•Timeshare Station Threshold (0-240): when the number of stations associated to the monitor radio exceeds this threshold, scanning is halted. Some of the features below, such as Auto Configure for Cell Size and Channel Configuration, are only available if the Array’s license includes the Xirrus Advanced RF Performance Manager (RPM). If a setting is unavailable (grayed out), then your license does not support the feature. Please see “About Licensing and Upgrades” on page 321.Other features below, such as RF Intrusion Detection, are only available if the Array’s license includes the Xirrus Advanced RF Security Manager (RSM).
Wireless Array284 Configuring the Wireless Array•Timeshare Traffic Threshold (0-50000): when the number of packets per second handled by the monitor radio exceeds this threshold, scanning is halted.RF Resilience2. Radio Assurance Mode: When this mode is enabled, the monitor radio performs loopback tests on the Array. This mode requires RF Monitor Mode to be enabled (Step 1) to enable self-monitoring functions. It also requires a radio to be set to monitoring mode (see “Enabling Monitoring on the Array” on page 420). Operation of Radio Assurance mode is described in detail in “Array Monitor and Radio Assurance Capabilities” on page 420. The Radio Assurance mode scans and sends out probe requests on each channel, in turn. It listens for all probe responses and beacons. These tests are performed continuously (24/7). If no beacons or probe responses are observed from a radio for a predetermined period, Radio Assurance mode will take action according to the preference that you have specified: •Failure alerts only — The Array will issue alerts in the Syslog, but will not initiate repairs or reboots.•Failure alerts & repairs, but no reboots — The Array will issue alerts and perform resets of one or all of the radios if needed. •Failure alerts & repairs & reboots if needed — The Array will issue alerts, perform resets, and schedule reboots if needed. •Disabled — Disable IAP radio assurance tests (no self-monitoring occurs). Loopback tests are disabled by default.3. Enable Standby Mode: Choose Yes to enable this Array to function as a backup unit for the target Array, or choose No to disable this feature. See “About Standby Mode” on page 282.
Wireless Array Configuring the Wireless Array 2854. Standby Target Address: If you enabled the Standby Mode, enter the MAC address of the target Array (i.e., the address of the primary Array that is being monitored and backed up by this Array). To find this MAC address, open the Array Info window on the target Array, and use the Gigabit1 MAC Address.RF Power & Sensitivity For an overview of RF power and cell size settings, please see “Capacity and Cell Sizes” on page 28 and “Fine Tuning Cell Sizes” on page 29. 5. Set Cell Size: Cell Size may be set globally for all enabled IAPs to Auto, Large, Medium, Small, or Max using the buttons. 6. Auto Cell Period (seconds): You may set up auto-configuration to run periodically, readjusting optimal cell sizes for the current conditions. Enter a number of seconds to specify how often auto-configuration will run. If you select None, then auto-configuration of cell sizing will not be run periodically. You do not need to run Auto Cell often unless there are a To use the Auto Cell Size feature, the following additional settings are required: RF Monitor Mode must be turned On. See “RF Monitor” on page 283 One of the radios must be in monitor mode, and all other IAPs that will use Auto Cell must have Cell Size set to auto. See “Procedure for Manually Configuring IAPs” on page 257. To use the Auto Cell Size feature, the following additional settings are required: RF Monitor Mode must be turned On. See “RF Monitor” on page 283 One of the radios must be in monitor mode with the default RxdBm setting of -95, and all other IAPs that will use Auto Cell must have Cell Size set to auto. See “Procedure for Manually Configuring IAPs” on page 257.
Wireless Array286 Configuring the Wireless Arraylot of changes in the environment. If the RF environment is changing often, running Auto Cell every twenty-four hours (86400 seconds) should be sufficient). The default value is None.7. Auto Cell Size Overlap (%): Enter the percentage of cell overlap that will be allowed when the Array is determining automatic cell sizes. For 100% overlap, the power is adjusted such that neighboring Arrays that hear each other best will hear each other at -70dB. For 0% overlap, that number is -90dB. The default value is 50%.8. Auto Cell Min Cell Size: Use this setting if you wish to set the minimum cell size that Auto Cell may assign. The values are Default, Large, Medium, or Small.9. Auto Cell Min Tx Power (dBm): Enter the minimum transmit power that the Array can assign to a radio when adjusting automatic cell sizes. The default value is 10.10. Auto Cell Configuration: Click this button to instruct the Array to determine and set the best cell size for each enabled IAP whose Cell Sizeis auto on the IAP Settings window, based on changes in the environment. This is the recommended method for setting cell size. You may look at the Tx and Rx values on the IAP Settings window to view the cell size settings that were applied. 11. Sharp Cell: This feature reduces interference between neighboring Arrays or other Access Points by limiting to a defined boundary (cell size) the trailing edge bleed of RF energy. Choose On to enable the Sharp Cell functionality, or choose Off to disable this feature. See also, “Fine Tuning Cell Sizes” on page 29.The Sharp Cell feature only works when the cell size is Small, Medium, or Large (or Auto) — but not Max. If an IAP cell size is set to Max, the Sharp Cell feature will be disabled for that radio.
Wireless Array Configuring the Wireless Array 287RF Spectrum Management12. Configuration Status: Shows the status of auto channel configuration. If an operation is in progress, the approximate time remaining until completion is displayed; otherwise Idle is displayed. 13. Band Configuration: Automatic band configuration is the recommended method for assigning bands to the abg(n) IAPs. It runs only on command, assigning IAPs to the 2.4GHz or 5GHz band when you click the Auto Configure button. The Array uses its radios to listen for other APs on the same channel, and it assigns bands based on where it finds the least interference. Auto band always assigns at least one radio to the 2.4GHz band. Auto band runs separately from auto channel configuration. If the band is changed for an IAP, associated stations will be disconnected and will then reconnect. 14. Channel Configuration: Automatic channel configuration is the recommended method for channel allocation. When the Array performs auto channel configuration, you may optionally instruct it to first negotiate with any other nearby Arrays that have been detected, to determine whether to stagger the start time for the procedure slightly. Thus, nearby Arrays will not run auto channel at the same time. This prevents Arrays from interfering with each other’s channel assignments. Click Auto Configure to instruct the Array to determine the best channel allocation settings for each enabled IAP and select the channel automatically, based on changes in the environment. This is the recommended method for 802.11a channel allocation (see “RF Spectrum Management” on page 287). The following options may be selected for auto configuration: •Negotiate: negotiate air-time with other Arrays before performing a full scan. Negotiating is slower, but if multiple Arrays are configuring channels at the same time the Negotiate option ensures that multiple Arrays don't select the same channels. Turning off the Negotiate option allows the Auto Configure button to manually perform auto channel without waiting, and may be used when you know that no other nearby Arrays are configuring their channels.
Wireless Array288 Configuring the Wireless Array•Full Scan: perform a full traffic scan on all channels on all IAPs to determine the best channel allocation.•Non-Radar: give preference to channels without radar-detect.•Include WDS: automatically assign 5GHz to WDS client links.Click Factory Defaults if you wish to instruct the Array to return all IAPs to their factory preset channels. 15. Auto Channel Configuration Mode: This option allows you to instruct the Array to auto-configure channel selection for each enabled IAP when the Array is powered up. Choose On Array PowerUp to enable this feature, or choose Disabled to disable this feature.16. Auto Channel Configure on Time: This option allows you to instruct the Array to auto-configure channel selection for each enabled IAP at a time you specify here. Leave this field blank unless you want to specify a time at which the auto-configuration utility is initiated. Time is specified in hours and minutes, using the format: [day]hh:mm [am|pm]. If you omit the optional day specification, channel configuration will run daily at the specified time. If you do not specify am or pm, time is interpreted in 24-hour military time. For example, Sat 11:00 pm and Saturday 23:00 are both acceptable and specify the same time. 17. Channel List Selection: This list selects which channels are available to the auto channel algorithm. Channels that are not checked are left out of the auto channel selection process. Note that channels that have been locked by the user are also not available to the auto channel algorithm.18. Auto Channel List: Use All Channels selects all available channels (this does not include locked channels). Use Defaults sets the auto channel list back to the defaults. This omits newer channels (100-140) — many wireless NICs don’t support these channels. Station AssuranceStation assurance monitors the quality of the connections that users are experiencing on the wireless network. You can quickly detect stations that are having problems and take steps to correct them. Use these settings to establish
Wireless Array Configuring the Wireless Array 289threshold values for errors and other problems. Station assurance is enabled by default, with a set of useful default thresholds that you may adjust as desired.When a connection is experiencing problems and reaches one of these thresholds in the specified period of time, the Array responds with several actions: an event is triggered, a trap is generated, and a Syslog message is logged. For example, if a client falls below the threshold for Min Average Associated Time, this “bouncing” behavior might indicate roaming problems with the network’s RF design, causing the client to bounce between multiple arrays and not stay connected longer than the time to re-associate and then jump again. This can be corrected with RF adjustments. Station assurance alerts you to the fact that this station is encountering problems. Figure 143. Station Assurance (Advanced RF Settings)19. Enable Station Assurance: This is enabled by default. Click No if you wish to disable it, and click Yes to re-enable it. When station assurance is enabled, the Array will monitor connection quality indicators listed below and will display associated information on the Station Assurance Status page. When a threshold is reached, an event is triggered, a trap is generated, and a Syslog message is logged. 20. Period: In seconds, the period of time for a threshold to be reached. For example, the Array will check whether Max Authentication Failures has been reached in this number of seconds. 21. Min Average Associated Time: (seconds) Station assurance detects whether the average length of station associations falls below this threshold during a period.
Wireless Array290 Configuring the Wireless Array22. Max Authentication Failures: Station assurance detects whether the number of failed login attempts reaches this threshold during a period. 23. Max Packet Error Rate: (%) Station assurance detects whether the packet error rate percentage reaches this threshold during a period. 24. Max Packet Retry Rate: (%) Station assurance detects whether the packet retry rate percentage reaches this threshold during a period. 25. Min Packet Data Rate: (Mbps) Station assurance detects whether the packet data rate falls below this threshold during a period. 26. Min Received Signal Strength: (dB) Station assurance detects whether the strength of the signal received from the station falls below this threshold during a period. 27. Min Signal to Noise Ratio: (dB) Station assurance detects whether the ratio of signal to noise received from the station falls below this threshold during a period. 28. Max Distance from Array: Min Received Signal Strength: (feet) Station assurance detects whether the distance of the station from the Array reaches this threshold during a period. See AlsoCoverage and Capacity PlanningGlobal Settings .11anGlobal Settings .11bgnGlobal Settings .11nIAPsIAP SettingsRadio Assurance
Wireless Array Configuring the Wireless Array 291Intrusion Detection The Xirrus Array employs a number of IDS/IPS (Intrusion Detection System/ Intrusion Prevention System) strategies to detect and prevent malicious attacks on the wireless network. This window allows you to adjust intrusion detection settings. Figure 144. Intrusion Detection SettingsThe Array provides a suite of intrusion detection and prevention options to improve network security. You can separately enable detection of the following types of problems:Rogue Access Point Detection and BlockingUnknown access points are detected, and may be automatically blocked based on a number of criteria. See “About Blocking Rogue APs” on page 294.
Wireless Array292 Configuring the Wireless ArrayDenial of Service (DoS) or Availability Attack Detection A DoS attack attempts to flood an Array with communications requests so that it cannot respond to legitimate traffic, or responds so slowly that it becomes effectively unavailable. The Array can detect a number of types of DoS attacks, as described in the table below.Impersonation DetectionThese malicious attacks use various techniques to impersonate a legitimate AP or station, often in order to eavesdrop on wireless communications. The Array detects a number of types of impersonation attacks, as described in the table below.Type of Attack DescriptionDoS AttacksBeacon Flood Generating thousands of counterfeit 802.11 beacons to make it hard for stations to find a legitimate AP.Probe Request Flood Generating thousands of counterfeit 802.11 probe requests to overburden the Array.Authentication Flood Sending forged Authenticates from random MAC addresses to fill the Array's association table.Association Flood Sending forged Associates from random MAC addresses to fill the Array's association table.Disassociation Flood Flooding the Array with forged Disassociation packets.Deauthentication Flood Flooding the Array with forged Deauthenticates.EAP Handshake Flood Flooding an AP with EAP-Start messages to consume resources or crash the target.Null Probe Response Answering a station probe-request frame with a null SSID. Many types of popular NIC cards cannot handle this situation, and will freeze up.
Wireless Array Configuring the Wireless Array 293MIC Error Attack Generating invalid TKIP data to exceed the Array's MIC error threshold, suspending WLAN service.Disassociation Attack (Omerta) Sending forged disassociation frames to all stations on a channel in response to data frames. Deauthentication Attack Sending forged deauthentication frames to all stations on a channel in response to data frames. Duration Attack (Duration Field Spoofing)Injecting packets into the WLAN with huge duration values. This forces the other nodes in the WLAN to keep quiet, since they cannot send any packet until this value counts down to zero. If the attacker sends such frames continuously it silences other nodes in the WLAN for long periods, thereby disrupting the entire wireless service. Impersonation AttacksAP impersonation Reconfiguring an attacker's MAC address to pose as an authorized AP. Administrators should take immediate steps to prevent the attacker from entering the WLAN. Station impersonation Reconfiguring an attacker's MAC address to pose as an authorized station. Administrators should take immediate steps to prevent the attacker from entering the WLAN. Evil twin attack Masquerading as an authorized AP by beaconing the WLAN's service set identifier (SSID) to lure users.Sequence number anomaly A sender may use an Add Block Address request (ADDBA - part of the Block ACK mechanism) to specify a sequence number range for packets that the receiver can accept. An attacker spoofs an ADDBA request, asking the receiver to reset its sequence number window to a new range. This causes the receiver to drop legitimate frames, since their sequence numbers will not fall in that range. Type of Attack Description
Wireless Array294 Configuring the Wireless ArrayAbout Blocking Rogue APsIf you classify a rogue AP as blocked (see “Rogue Control List” on page 222), then the Array will take measures to prevent stations from staying associated to the rogue. When the monitor radio is scanning, any time it hears a beacon from a blocked rogue it sends out a broadcast “deauth” signal using the rogue's BSSID and source address. This has the effect of disconnecting all of a rogue AP’s clients approximately every 5 to 10 seconds, which is enough to make the rogue frustratingly unusable.The Advanced RF Settings window allows you to set up Auto Block parameters so that unknown APs get the same treatment as explicitly blocked APs. This is basically a “shoot first and ask questions later” mode. By default, auto blocking is turned off. Auto blocking provides two parameters for qualifying blocking so that APs must meet certain criteria before being blocked. This keeps the Array from blocking every AP that it detects. You may:Set a minimum RSSI value for the AP — for example, if an AP has an RSSI value of -90, it is probably a harmless AP belonging to a neighbor and not in your building.Block based on encryption level.Block based on whether the AP is part of an ad hoc network or infrastructure network. Procedure for Configuring Intrusion Detection RF Intrusion Detection and Auto Block Mode1. Intrusion Detection Mode: This option allows you to choose the Standard intrusion detection method, or you can choose Off to disable this feature. See “Array Monitor and Radio Assurance Capabilities” on page 420 for more information. •Standard — enables the monitor radio to collect Rogue AP information. •Off — intrusion detection is disabled.
Wireless Array Configuring the Wireless Array 2952. Auto Block Unknown Rogue APs: Enable or disable auto blocking (see “About Blocking Rogue APs” on page 294). Note that in order to set Auto Block RSSI and Auto Block Level, you must set Auto Block Unknown Rogue APs to On. Then the remaining Auto Block fields will be active.3. Auto Block RSSI: Set the minimum RSSI for rogue APs to be blocked. APs with lower RSSI values will not be blocked. They are assumed to be farther away, and probably belonging to neighbors and posing a minimal threat. 4. Auto Block Level: Select rogue APs to block based on the level of encryption that they are using. The choices are: •Automatically block unknown rogue APs regardless of encryption.•Automatically block unknown rogue APs with no encryption.•Automatically block unknown rogue APs with WEP or no encryption.5. Auto Block Network Types: Select rogues to automatically block by applying the criteria above only to networks of the type specified below. The choices are: •All — the unknown rogues may be part of any wireless network.•IBSS/AD Hoc only — only consider auto blocking rogues if they belong to an ad hoc wireless network (a network of client devices without a controlling Access Point, also called an Independent Basic Service Set — IBSS).•ESS/Infrastructure only — only consider auto blocking rogue APs if they are in infrastructure mode rather than ad hoc mode.DoS Attack Detection Settings6. Attack/Event: The types of DoS attack that you may detect are described in the Type of Attack Table on page 292. Detection of each attack type may be separately enabled or disabled. For each attack, a default Threshold and Period (seconds) are specified. If the number of occurrences of the type of packet being detected exceeds the threshold in
Wireless Array296 Configuring the Wireless Arraythe specified number of seconds, then the Array declares that an attack has been detected. You may modify the Threshold and Period. For the Flood attack settings, you also have a choice of Auto or Manual. •Manual mode — threshold and period settings are used to detect a flood. Packets received are simply counted for the specified time period and compared against the flood threshold. The default for all of the floods is Manual mode. •Auto mode — the Array analyzes current traffic for packets of a given type versus traffic over the past hour to determine whether a packet flood should be detected. In this mode, threshold and period settings are ignored. This mode is useful for floods like beacon or probe floods, where the numbers of such packets detected in the air can vary greatly from installation to installation. 7. Duration Attack NAV (ms): For the duration attack, you may also modify the default duration value that is used to determine whether a packet may be part of an attack. If the number of packets having at least this duration value exceeds the Threshold number in the specified Period, an attack is detected. Impersonation Detection Settings8. Attack/Event: The types of impersonation attack that you may detect are described in Impersonation Attacks on page 293. Detection of each attack type may be turned On or Off separately. For AP or Station Impersonation attacks, a default Threshold and Period (seconds) are specified. If the number of occurrences of the type of packet being detected exceeds the threshold in the specified number of seconds, then the Array declares that an attack has been detected. You may modify the Threshold and Period. 9. Sequence number anomaly: You may specify whether to detect this type of attack in Data traffic or in Management traffic, or turn Off this type of detection.
Wireless Array Configuring the Wireless Array 297LED SettingsThis window assigns behavior preferences for the Array’s IAP LEDs.Figure 145. LED SettingsProcedure for Configuring the IAP LEDs1. LED State: This option determines which event triggers the LEDs, either when an IAP is enabled or when an IAP first associates with the network. Choose On Radio Enabled or On First Association, as desired. You may also choose Disabled to keep the LEDs from being lit. The LEDs will still light during the boot sequence, then turn off. 2. LED Blink Behavior: This option allows you to select when the IAP LEDs blink, based on the activities you check here. From the choices available, select one or more activities to trigger when the LEDs blink. For default behavior, see “Array LED Operating Sequences” on page 63.3. Click Save changes to flash if you wish to make your changes permanent.
Wireless Array298 Configuring the Wireless ArraySee AlsoGlobal Settings (IAP)Global Settings .11anGlobal Settings .11bgnIAPsLED Boot SequenceDSCP MappingsDSCP is the 6-bit Differentiated Services Code Point (DiffServ) field in the IPv4 or IPv6 packet header, defined in RFC2474 and RFC2475. The DSCP value classifies the packet to determine the Quality of Service (QoS) required. DSCP replaces the outdated Type of Service (TOS) field. The DSCP Mappings page shows the default mapping of each of the 64 DSCP values to one of the Array’s four QoS levels, and allows you to change these mappings.For a detailed discussion of the operation of QoS and DSCP mappings on the Array, please see “Understanding QoS Priority on the Wireless Array” on page 226. Figure 146. DSCP Mappings
Wireless Array Configuring the Wireless Array 299Procedure for Configuring DSCP Mappings 1. DSCP to QoS Mapping Mode: Use the On and Off buttons to enable or disable the use of the DSCP mapping table to determine the QoS level applied to each packet. 2. DSCP to QoS Mapping: The radio buttons in this table show all DSCP values (0 to 63), and the QoS level to which each is mapped. To change the QoS level applied to a DSCP value, click the desired QoS level (0 to 3) underneath it.Roaming AssistRoaming assist is a Xirrus feature that helps clients roam to Arrays that will give them high quality connections. Some smart phones and tablets will stay connected to a radio with poor signal quality, even when there’s a radio with better signal strength within range. When roaming assist is enabled, the Array “assists” the device by deauthenticating it when certain parameters are met. This encourages a client with a high roaming threshold (i.e., a device that may not roam until signal quality has seriously dropped) to move to an Array that gives it a better signal. The deauthentication is meant to cause the client to choose a different radio. You can specify the device types that will be assisted in roaming. The roaming threshold is the difference in signal strength between radios that will trigger a deauthentication. If the client’s signal is lower than the sum of the threshold and the stronger neighbor radio’s RSSI, then we “assist” the client. For example:Threshold = -5RSSI of neighbor Array = -65RSSI of client = -75-75 < (-5 + -65) : Client will roamAnother example:Threshold = -15RSSI of neighbor array = -60RSSI of station = -70-70 > (-15 + -60) : Client will not roam
Wireless Array300 Configuring the Wireless ArrayFigure 147. Roaming AssistProcedure for Configuring Roaming Assist1. Enable Roaming Assist: Use the Yes and No buttons to enable or disable this feature.2. Backoff Period: After deauthenticating a station, it may re-associate to the same radio. To prevent the Array from repeatedly deauthenticating the station when it comes back, there is a backoff period. This is the number of seconds the station is allowed to stay connected before another deauthentication.3. Roaming Threshold: This is the difference in signal strength between radios that will trigger a deauthentication, as described in the discussion above. In most cases, this will be a negative number. 4. Minimum Data Rate: If the station’s data rate (either Tx or Rx) falls below this rate, it will trigger a deauthentication.5. Devices: You can configure the device classes or types that will be assisted in roaming. Many small, embedded devices (such as the default device types: phones, tablets, music players) are sticky—they have high roaming thresholds that tend to keep them attached to the same radio
Wireless Array Configuring the Wireless Array 301despite the presence of radios with better signal strength. The following device classes and types are handled. You may enter one or more of these, but use care since roaming assist may cause poor results in some cases. Appliance Game Notebook PhonePlayer Tablet Android AppleTVArchos BlackBerry DIRECTV DangerDoCoMo Ericsson GoogleTV KDDIKindle Linux Mac NintendoNokia PalmOS PlayStation SamsungSymbian Thermostat Vodafone WebOSWii Win Mobile Windows XboxiPad iPhone iPod
Wireless Array302 Configuring the Wireless ArrayWDSThis is a status-only window that provides an overview of all WDS links that have been defined. WDS (Wireless Distribution System) is a system that enables the interconnection of access points wirelessly, allowing your wireless network to be expanded using multiple access points without the need for a wired backbone to link them. The Summary of WDS Client Links shows the WDS links that you have defined on this Array and identifies the target Array for each by its base MAC address. The Summary of WDS Host Links shows the WDS links that have been established on this Array as a result of client Arrays associating to this Array (i.e., the client Arrays have this Array as their target). The summary identifies the source (client) Array for each link. Both summaries identify the IAPs that are part of the link and whether the connection for each is up or down. See “WDS Planning” on page 52 for an overview.Figure 148. WDS About Configuring WDS LinksA WDS link connects a client Array and a host Array (see Figure 149 on page 303). The host must be the Array that has a wired connection to the LAN. Client links from one or more Arrays may be connected to the host, and the host may also have client links. See “WDS Planning” on page 52 for more illustrations. The configuration for WDS is performed on the client Array only, as described in “WDS Client Links” on page 304. No WDS configuration is performed on the host Array. First you will set up a client link, defining the target (host) Array and SSID,
Wireless Array Configuring the Wireless Array 303and the maximum number of IAPs in the link. Then you will select the IAPs to be used in the link. When the client link is created, each member IAP will associate to an IAP on the host Array. You may wish to consider configuring the WDS link IAPs so that only the WDS link SSIDs are active on them. See “Active IAPs” on page 243. Figure 149. .Configuring a WDS Link Long Distance LinksIf you are using WDS to provide backhaul over an extended distance, use the WDS Dist. (Miles) setting to prevent timeout problems associated with long transmission times. (See “IAP Settings” on page 256) Set the approximate distance Once an IAP has been selected to act as a WDS client link, you will not be allowed to use auto-configured cell sizing on that IAP (since the cell must extend all the way to the other Array). When configuring WDS, if you use WPA-PSK (Pre-Shared Key) as a security mechanism, ensure that EAP is disabled. Communication between two Arrays in WDS mode will not succeed if the client Array has both PSK and EAP enabled on the SSID used by WDS. See SSID Management. TKIP encryption does not support high throughput rates, per IEEE 802.11n. TKIP should never be used for WDS links on XR arrays. a2(52)a3(149)a4(40)a10(52)a9(149)a8(40)CLIENT HOSTWired LANClient Link
Wireless Array304 Configuring the Wireless Arrayin miles between this IAP and the connected Array in the WDS Dist. (Miles) column. This will increase the wait time for frame transmission accordingly. See AlsoSSID ManagementActive IAPsWDS Client Link IAP Assignments:WDS Client LinksWDS StatisticsWDS Client LinksThis window allows you to set up a maximum of four WDS client links. Figure 150. WDS Client Links
Wireless Array Configuring the Wireless Array 305Procedure for Setting Up WDS Client LinksWDS Client Link Settings: 1. Host Link Stations: Check the Allow checkbox to instruct the Array to allow stations to associate to IAPs on a host Array that participates in a WDS link. The WDS host IAP will send beacons announcing its availability to wireless clients. This is disabled by default. 2. Spanning Tree Protocol (STP): Check the Enable checkbox to instruct the Array to enforce the Spanning Tree Protocol on all WDS links. This is enabled by default. Use of STP is strongly recommended in most situations. However, in situations like the one in the next step, where WDS is used by an Array mounted on a high speed train, STP can add significant delay (often on the order of 30 to 60 seconds) while initially analyzing network topology. In such a situation, it may be desirable to disable STP. 3. Roaming RSSI Threshold: If an Array is deployed on a mobile site (on a train, for example), you can use WDS to implement a wireless backhaul that will roam between Arrays at fixed locations. When another candidate Array for WDS host target is found, the client link will roam to the new Array if its RSSI is stronger than the RSSI of the current host connection by at least the Roaming RSSI Threshold. The default is 6 dB. 4. Roaming RSSI Averaging Weight: This weight changes how much the latest RSSI reading influences the cumulative weighted RSSI value utilized in checking the threshold (above) to make a roaming decision. Once an IAP has been selected to act as a WDS client link, no other association will be allowed on that IAP. However, wireless associations will be allowed on the WDS host side of the WDS session.Caution: If STP is disabled and a network connection is made on the WDS Client Array’s Gigabit link that can reach the WDS Host Array, broadcast and multicast packets will not be blocked. A broadcast storm may cause a network outage.
Wireless Array306 Configuring the Wireless ArrayThe higher the weight, the lower the influence of a new RSSI reading. This is not exactly a percentage, but a factor in the formula for computing the current RSSI value based on new readings: StoredRSSI = (StoredRSSI * RoamingAvgWeight+ NewRSSIReading * (100 - RoamingAvgWeight)) / 100This prevents erroneous or out-of-line RSSI readings from causing the WDS link to jump to a new array. Such readings can result from temporary obstructions, external interference, etc. 5. Click Save changes to flash after you are finished making changes on this page if you wish to make your changes permanent.WDS Client Link IAP Setting: 6. Enable/Disable/Reset All Links: Click the appropriate button to:•Enable All Links—this command activates all WDS links configured on the Array.•Disable All Links—this command deactivates all WDS links configured on the Array. It leaves all your settings unchanged, ready to re-enable.•Reset All Links—this command tears down all links configured on the Array and sets them back to their factory defaults, effective immediately.7. Client Link: Shows the ID (1 to 4) of each of the four possible WDS links. 8. Enabled: Check this box if you want to enable this WDS link, or uncheck the box to disable the link. 9. Max IAPs Allowed (1-3): Enter the maximum number of IAPs for this link, between 1 and 3.10. Target Array Base MAC Address: Enter the base MAC address of the target Array (the host Array at the other side of this link). To find this MAC address, open the WDS window on the target Array, and use This Array Address located on the right under the Summary of WDS Host Links. To allow any Xirrus Array to be accepted as a WDS target, enter the
Wireless Array Configuring the Wireless Array 307Xirrus OUI: 00:0f:7d:00:00:00 (this is useful for roaming in a mobile deployment, as described in Step 3 on page 305. 11. Target SSID: Enter the SSID that the target Array is using. 12. Username: Enter a username for this WDS link. A username and password is required if the SSID is using PEAP for WDS authentication from the internal RADIUS server.13. Password: Enter a password for this WDS link.14. Clear Settings: Click on the Clear button to reset all of the fields on this line. WDS Client Link IAP Assignments: 15. For each desired client link, select the IAPs that are part of that link. The IAP channel assignments are shown in the column headers.16. IAP Channel Assignment: Click Auto Configure to instruct the Array to automatically determine the best channel allocation settings for each IAP that participates in a WDS link, based on changes in the environment. These changes are executed immediately, and are automatically applied. See AlsoSSID ManagementWDS PlanningWDSWDS Statistics
Wireless Array308 Configuring the Wireless ArrayFiltersThe Wireless Array’s integrated firewall uses stateful inspection to speed the decision of whether to allow or deny traffic. Filters are used to define the rules used for blocking or passing traffic. Filters can also set the VLAN and QoS level for selected traffic. User connections managed by the firewall are maintained statefully — once a user flow is established through the Array, it is recognized and passed through without application of all defined filtering rules. Stateful inspection runs automatically on the Array. The rest of this section describes how to view and manage filters.Figure 151. FiltersThis feature is only available if the Array’s license includes the Xirrus Advanced RF Security Manager (RSM). If a setting is unavailable (grayed out), then your license does not support the feature. Please see “About Licensing and Upgrades” on page 321.The air cleaner feature offers a number of predetermined filter rules that eliminate a great deal of unnecessary wireless traffic. See “Air Cleaner” on page 363. Orange arrow expands/collapses display
Wireless Array Configuring the Wireless Array 309Filters are organized in groups, called Filter Lists. A filter list allows you to apply a uniform set of filters to SSIDs or Groups very easily. The read-only Filters window provides you with an overview of all filter lists that have been defined for this Array, and the filters that have been created in each list. Filters are listed in the left side column by name under the filter list to which they belong. Each filter entry includes information about the type of filter, the protocol it is filtering, which port it applies to, source and destination addresses, and QoS and VLAN assignments.Filter Lists This window allows you to create filter lists. The Array comes with one predefined list, named Global, which cannot be deleted. Filter lists (including Global) may be applied to SSIDs or to Groups. Only one filter list at a time may be applied to a group or SSID (although the filter list may contain a number of filters). All filters are created within filter lists. Figure 152. Filter Lists
Wireless Array310 Configuring the Wireless ArrayProcedure for Managing Filter Lists1. Stateful Filtering: Stateful operation of the integrated firewall can be Enabled or Disabled. If you have a large number of filters and you don’t want to apply them in a stateful manner, you may use this option to turn the firewall off.2. New Filter List Name: Enter a name for the new filter list in this field, then click on the Create button to create the list. All new filters are disabled when they are created. The new filter list is added to the Filter List table in the window. Click on the filter list name, and you will be taken to the Filter Management window for that filter list.3. On: Check this box to enable this filter list, or leave it blank to disable the list. If the list is disabled, you may still add filters to it or modify it, but none of the filters will be applied to data traffic. 4. Filters: This read-only field displays the number of filters that belong to this filter list.5. SSIDs: This read-only field lists the SSIDs that use this filter list.6. User Groups: This read-only field lists the Groups that use this filter list.7. Delete: Click this button to delete this filter list.8. Click Save changes to flash if you wish to make your changes permanent.9. Click a filter list to go to the Filter Management window to create and manage the filters that belong to this list.
Wireless Array Configuring the Wireless Array 311Filter Management This window allows you to create and manage filters that belong to a selected filter list, based on the filter criteria you specify. Figure 153. Filter Management Note that filtering is secondary to the stateful inspection performed by the integrated firewall. Traffic for established connections is passed through without the application of these filtering rules.Procedure for Managing Filters1. Filter List: Select the filter list to display and manage on this window. All of the filters already defined for this list are shown, and you may create additional filters for this list.2. New Filter Name: Enter a name for the new filter in the field next to the Create button, then click on the Create button to create the filter. All new filters are added to the table of filters at the top of the window. The filter name must be unique within the list, but it may have the same name as a Filters are applied in order, from top to bottom. Click here to change the order.
Wireless Array312 Configuring the Wireless Arrayfilter in a different filter list. Two filters with the same name in different filter lists will be completely unrelated to each other — they may be defined with different parameter values. 3. Filter: Choose a filter entry to modify from the list at the top of the window. 4. On: Use this field to enable or disable this filter.5. Deny: Choose whether this filter will be an Allow filter or a Deny filter. If you define the filter as an Allow filter, then any associations that meet the filter criteria will be allowed. If you define the filter as a Deny filter, any associations that meet the filter criteria will be denied.6. Protocol: Choose a specific filter protocol from the pull-down list, or choose numeric and enter a Number, or choose any to instruct the Array to use the best filter. This is a match criterion.7. Port: This is a match criterion. From the pull-down list, choose the target port type for this filter. Choose any to instruct the Array to apply the filter to any port, or choose 1-65534 and enter a Number. To enter a Range of port numbers, separate the start and end numbers with a colon as shown: Start # : End #.8. QoS: (Optional) Set packets that match the filter criteria to this QoS level (0 to 3), selected from the pull-down list. Level 0 has the lowest priority; level 3 has the highest priority. By default, this field is blank and the filter does not modify QoS level. See “Understanding QoS Priority on the Wireless Array” on page 226.9. VLAN ID: (Optional) Set packets that match the filter criteria to this VLAN. Select a VLAN from the pull-down list, or select numeric and enter the number of a previously defined VLAN (see “VLANs” on page 185). 10. Move Up/Down: The filters are applied in the order in which they are displayed in the list, with filters on the top applied first. To change an entry’s position in the list, just click its Up or Down button.
Wireless Array Configuring the Wireless Array 31311. Source Address: Define a source address to match as a filter criterion. Click the radio button for the desired type of address (or other attribute) to match. Then specify the value to match in the field to the right of the button. Choose Any to use any source address. Check Not to match any address except for the specified address.12. Destination Address: Define a destination address to match as a filter criterion. Click the radio button for the desired type of address (or other attribute) to match. Then specify the value to match in the field to the right of the button. Choose Any to use any source address. Check Not to match any address except for the specified address.13. To delete a filter, click its Delete button. 14. Click Save changes to flash if you wish to make your changes permanent.See AlsoFiltersFilter StatisticsUnderstanding QoS Priority on the Wireless ArrayVLANs
Wireless Array314 Configuring the Wireless ArrayClusters Clusters allow you to configure multiple Arrays at the same time. Using WMI (or CLI), you may define a set of Arrays that are members of the cluster. Then you may enter Cluster mode for a selected cluster, which sends all successive configuration commands issued via CLI or WMI to all of the member Arrays. When you exit cluster mode, configuration commands revert to applying only to the Array to which you are connected.The read-only Clusters window provides you with an overview of all clusters that have been defined for this Array, and the Arrays that have been added to each. Arrays are listed in the left hand column by name under the cluster to which they belong. Each Array entry displays its IP Address, Username, and Password. Figure 154. ClustersClusters are discussed in the following topics:Cluster DefinitionCluster ManagementCluster Operation
Wireless Array Configuring the Wireless Array 315Cluster Definition This window allows you to create clusters. All existing clusters are shown, along with the number of Arrays currently in each. Up to 16 clusters may be created, with up to 50 Arrays in each. Figure 155. Cluster DefinitionProcedure for Managing Cluster Definition1. New Cluster Name: Enter a name for the new cluster in the field to the left of the Create button, then click Create to add this entry. The new cluster is added to the list in the window. Click on the cluster name, and you will be taken to the Cluster Management window for that cluster.2. Delete: To delete a cluster, click its Delete button.3. Click Save changes to flash if you wish to make your changes permanent.4. Click a cluster to go to the Cluster Management window to add or remove Arrays in the cluster.
Wireless Array316 Configuring the Wireless ArrayCluster Management This window allows you to add Arrays to or delete them from a selected cluster. A cluster may include a maximum of 50 Arrays. Note that the Array on which you are currently running WMI is not automatically a member of the cluster. If you would like it to be a member, you must add it explicitly. Figure 156. Cluster ManagementProcedure for Managing Clusters1. Edit Cluster: Select the cluster to display and manage on this window. All of the Arrays already defined for this cluster are shown, and you may add additional Arrays to this list.2. Array: Enter the hostname or IP address of the Array that you wish to add to this cluster. 3. Username/Password: In these columns, enter the administrator name and password for access to the Array. 4. Click the Add Array button to enter the Array. 5. To delete an Array, click its Delete button. 6. Click Save changes to flash if you wish to make your changes permanent.
Wireless Array Configuring the Wireless Array 317Cluster Operation This window puts WMI into Cluster Mode. In this mode, all configuration operations that you execute in WMI or CLI are performed on the members of the cluster. They are not performed on the Array where you are running WMI, unless it is a member of the cluster. You must use the Save changes to flash button at the top of configuration windows to permanently save your changes in Cluster Mode, just as you would in normal operation. When you are done configuring Arrays in the cluster, return to this window and click the Exit button to leave Cluster Mode. Figure 157. Cluster Mode OperationProcedure for Operating in Cluster Mode1. Operate: Click the Operate button to the right of the desired cluster. A message informs you that you are operating in cluster mode. Click OK. The Operate button is replaced with an Exit button.Figure 158. Cluster Mode Activation2. Select a WMI window for settings that you wish to configure for the cluster, and proceed to make the desired changes. 3. Proceed to any additional pages where you wish to make changes.
Wireless Array318 Configuring the Wireless Array4. Some Status and Statistics windows will present information for all Arrays in the cluster. 5. Click the Save button when done if you wish to save changes on the cluster member Arrays.6. Exit: Click the Exit button to the right of the operating cluster to terminate Cluster Mode. The WMI returns to normal operation — managing only the Array to which it is connected. Status and Statistics Windows in Cluster ModeIn Cluster Mode, many of the Status and Statistics windows will display information for all of the members of the cluster. You can tell whether a window displays cluster information — if so, it will display the Cluster Name near the top, as shown in Figure 159. Figure 159. Viewing Statistics in Cluster ModeYou have the option to show aggregate information for the cluster members, or click the Group by Array check box to separate it out for each Array.You may terminate cluster mode operation by clicking the Exit button to the right of the Group by Array check box.Cluster Name Specify Grouping Exit Cluster Mode
Wireless ArrayUsing Tools on the Wireless Array 319Using Tools on the Wireless ArrayThese WMI windows allow you to perform administrative tasks on your Array, such as upgrading software, rebooting, uploading and downloading configuration files, and other utility tasks. Tools are described in the following sections: “System Tools” on page 320“CLI” on page 332“Options” on page 333 “Logout” on page 336Note that the Tools menu section may be collapsed down to hide the headings under it by clicking it. Click again to display the headings. (See Figure 41 on page 84) This section does not discuss using status or configuration windows. For information on those windows, please see: “Viewing Status on the Wireless Array” on page 89“ Configuring the Wireless Array” on page 147
Wireless Array320 Using Tools on the Wireless ArraySystem ToolsThis window allows you to manage files for software images, configuration, and Web Page Redirect (WPR), manage the system’s configuration parameters, reboot the system, and use diagnostic tools.Figure 160. System ToolsStatus is shown hereProgress is shown here
Wireless ArrayUsing Tools on the Wireless Array 321About Licensing and UpgradesThe Array’s license determines many of the features that are available on the Array. For example, automatic cell sizing and channel allocation require a license that includes the Xirrus Advanced RF Performance Manager (RPM). Also, IEEE 802.11n operation on XN model Arrays is a licensed feature. To check the features supported by your license, see “Array Information” on page 95.If you are upgrading the Array to add new features that are not supported by your existing license, you must enter the new license key that includes the upgrade’s features before upgrading. Similarly, if you are upgrading the Array for a new release, you must enter the new license key that enables the operation of that release before upgrading. If you do not enter the new license first, the Array will display a message and revert to the previous software image, rather than trying to run new software for which it is not licensed. Major releases will need a new license key, but minor releases will not. For example, to upgrade from ArrayOS Release 5.0.5 to Release 5.1, you must enter a new license key. To upgrade from ArrayOS Release 5.0.5 to Release 5.0.6, use your existing license key.If you will be entering license keys and performing upgrades on many Arrays, the effort will be streamlined by using the Xirrus Management System (XMS). Procedure for Configuring System ToolsThese tools are broken down into the following sections:SystemConfigurationDiagnosticsWeb Page RedirectSome tools, such as Network Tools and Diagnostics, are only available if the Array’s license includes the Xirrus Advanced RF Analysis Manager (RAM). If a tool is unavailable (grayed out), then your license does not support the feature. See “About Licensing and Upgrades” on page 321.
Wireless Array322 Using Tools on the Wireless ArrayNetwork ToolsProgress and Status FramesSystem1. Save & Reboot or Reboot: Use Save & Reboot to save the current configuration and then reboot the Array. The LEDs on the Array indicate the progress of the reboot, as described in “Powering Up the Wireless Array” on page 62. Alternatively, use the Reboot button to discard any configuration changes which have not been saved since the last reboot. 2. Software Upgrade: This feature upgrades the ArrayOS to a newer version provided by Xirrus. Please note that you typically will need to enter a new license key to cover the upgrade’s features before clicking the Upgrade button. See “About Licensing and Upgrades” on page 321 for details. Enter the filename and directory location (or click on the Browse button to locate the software upgrade file), then click on the Upgrade button to upload the new file to the Array. Progress of the operation will be displayed below, in the Progress section. Completion status of the operation is shown in the Status section. This operation does not run the new software or change any configured values. The existing software continues to run on the Array until you reboot, at which time the uploaded software will be used.If you have difficulty upgrading the Array using the WMI, see “Upgrading the Array via CLI” on page 424 for a lower-level procedure you may use. Software Upgrade always uploads the file in binary mode. If you transfer any image file to your computer to have it available for the Software Upgrade command, it is critical to remember to transfer it (ftp, tftp) in binary mode!
Wireless ArrayUsing Tools on the Wireless Array 3233. License Key: If Xirrus provides you with a new license key for your Array, use this field to enter it, then click the Upgrade button to the right.A valid license is required for Array operation, and it controls the features available on the Array. If you upgrade your Array for additional features, you will be provided with a license key to activate those capabilities. If you attempt to enter an invalid key, you will receive an error message and the current key will not be replaced.Automatic Updates from Remote Image or Configuration File The Array software image or configuration file can be downloaded from an external server. In large deployments, all Arrays can be pointed to one TFTP server instead of explicitly initiating software image uploads to all Arrays. When the Array boots, the Array will download the software image from the specified TFTP server. Similarly, if you decide to change a setting in the Arrays, you can simply modify a single configuration file. After the Arrays are rebooted, they will automatically download the new configuration file from a single location on the specified TFTP server. 4. Remote TFTP Server: This field defines the path to a TFTP server to be used for automated remote update of software image and configuration files when rebooting. You may specify the server using an IP address or host name. 5. Remote Boot Image: When the Array boots up, it fetches the software image file specified here from the TFTP server defined above, and upgrades to this image before booting. This must be an Array image file with a .bin extension. Make sure to place the file on the TFTP server. If you disable the remote boot image (by blanking out this field) or if the image can't be transferred, the Array will fall back to booting whatever image is on the compact flash.
Wireless Array324 Using Tools on the Wireless Array 6. Remote Configuration: When the Array boots up, it fetches the specified configuration file from the TFTP server defined above, and applies this configuration after the local configuration is applied. The remote configuration must be an Array configuration file with a .conf extension. Make sure to place the file on the TFTP server. A partial configuration file may be used. For instance, if you wish to use a single configuration file for all of your Arrays but don't want to have the same IP address for each Array, you may remove the ipaddr line from the file. You can then load the file on each Array and the local IP addresses will not change.A remote configuration is never saved to the compact flash unless you issue a Save command.Configuration7. Update from Remote File: This field allows you to define the path to a configuration file (one that you previously saved — see Step 9 and Step 10 below). Click on the Browse button if you need to browse for the location of the file, then click Update to update your configuration settings.8. Update from Local File: This field updates Array settings from a local configuration file on the Array. Select one of the following files from the drop-down list: •factory.conf: The factory default settings.•lastboot.conf: The setting values from just before the last reboot.•saved.conf: The last settings that were explicitly saved using the Save changes to flash button at the top of each window.The Remote Boot Image or Configuration update happens every time that the Array reboots. If you only want to fetch the remote image or configuration file one time, be sure to turn off the remote option (blank out the field on the System Tools page) after the initial download. When a remote boot image is used, the image is transferred directly into memory and is never written to the compact flash.
Wireless ArrayUsing Tools on the Wireless Array 325•history/saved-yyyymmdd-pre-update.conf:history/saved-yyyymmdd-post-update.conf:Two files are saved for an upgrade: the setting values from just before an upgrade was performed, and the initial values afterward. The filename includes the upgrade date.•history/saved-yyyymmdd-auto.conf: Each time you use the Save changes to flash button, an “auto” file is saved with the settings current at that time. •history/saved-yyyymmdd-pre-reset.conf: history/saved-yyyymmdd-post-reset.conf:Each time you use one of the Reset to Factory Default buttons, two files are saved: the setting values from just before the reset, and the initial values afterward. The filename includes the reset date.•history/saved-yyyymmdd-hhmm.conf: The setting values that were explicitly saved using the Set Restore Point button (see Step 9 below).Click Update to update your configuration settings. Note that the History folder allows a maximum of 16 files. The oldest file is automatically deleted to make room for each new file. 9. Save to Local File: There are a few options for explicitly requesting the Array to save your current configuration to a file on the Array:•To view the list of configuration files currently on the Array, click the down arrow to the right of this field. If you wish to replace one of these files (i.e., save the current configuration under an existing file name), select the file, then click Save. Note that you cannot save to the file names factory.conf, lastboot.conf, and saved.conf - these files are write-protected.•You may enter the desired file name, then click Save.•Click Set Restore Point to save a copy of the current configuration, basing the file name on the current date and time. For example: history/saved-20100318-1842.conf
Wireless Array326 Using Tools on the Wireless ArrayNote that the configuration is automatically saved to a file in a few situations, as described in Step 8 above. 10. Download Current Configuration: Click on the link titled xs_current.conf to download the Array’s current configuration settings to a file (that you can upload back to the Array at a later date). The system will prompt you for a destination for the file. The file will contain the Array’s current configuration values.11. Reset to Factory Defaults: Click on the Reset/Preserve IP Settings button to reset the system’s current configuration settings to the factory default values, except for the Array’s management IP address which is left unchanged. This function allows you to maintain management connectivity to the Array even after the reset. This will retain the Gigabit Ethernet port’s IP address (see “Network Interfaces” on page 157), or if you have configured management over a VLAN it will maintain the management VLAN’s IP address (see “VLAN Management” on page 187). All other previous configuration settings will be lost.Click Reset to reset all of the system’s current configuration settings to the factory default values, including the management IP address — all previous configuration settings will be lost. The Array’s Gigabit Ethernet ports default to using DHCP to obtain an IP address. Diagnostics12. Diagnostic Log: Click the Create button to save a snapshot of Array information for use by Xirrus Customer Support personnel. The Progress and Status Frames show the progress of this operation. When the process Important! When you have initially configured your Array, or have made significant changes to its configuration, we strongly recommend that you save the configuration to a file in order to have a safe backup of your working configuration.If the IP settings change, the connection to the WMI may be lost.
Wireless ArrayUsing Tools on the Wireless Array 327is complete, the filename xs_diagnostic.log will be displayed in blue and provides a link to the newly created log file. Click the link to download this file to the C:\ folder on your local computer. (Figure 161) Figure 161. Saving the Diagnostic LogThis feature is only used at the request of Customer Support. It saves all of the information regarding your Array, including status, configuration, statistics, log files, and recently performed actions. The diagnostic log is always saved as a file named xs_diagnostic.logon your C:\ drive, so you should immediately rename the file to save it. This way, it will not be lost the next time you save a diagnostic log. Often, Customer Support will instruct you to save two diagnostic logs about ten minutes apart so that they can examine the difference in statistics between the two snapshots (for example, to see traffic and error statistics for the interval). Thus, you must rename the first diagnostic log file. All passwords are stored on the array in an encrypted form and will not be exposed in the diagnostic log. Click Update to create logThen click this link to save log file to local computer
Wireless Array328 Using Tools on the Wireless ArrayWeb Page RedirectThe Array uses a Perl script and a cascading style sheet to define the default splash/login Web page that the Array delivers for WPR. You may replace these files with files for one or more custom pages of your own. See Step 15 below to view the default files. See Step 14 on page 235 for more information about WPR and how the splash/login page is used.Each SSID that has WPR enabled may have its own page. Custom files for a specific SSID must be named based on the SSID name. For example, if the SSID is named Public, the default wpr.pl and hs.css files should be modified as desired and renamed to wpr-Public.pl and hs-Public.css before uploading to the Array. If you modify and upload files named wpr.pl and hs.css, they will replace the factory default files and will be used for any SSID that does not have its own custom files, per the naming convention just described. Be careful not to replace the default files unintentionally. Figure 162. Managing WPR Splash/Login page files13. Upload File: Use this to install files for your own custom WPR splash/login page (as described above) on the Array. Note that uploaded files are not immediately used - you must reboot the Array first. At that time, the Array looks for and uses these files, if found. Enter the filename and directory location (or click Browse to locate the splash/login page files), then click on the Upload button to upload the new files to the Array. You must reboot to make your changes take effect.
Wireless ArrayUsing Tools on the Wireless Array 32914. Remove File: Enter the name of the WPR file you want to remove, then click on the Delete button. You can use the List Files button to show you a list of files that have been saved on the Array for WPR. The list is displayed in the Status section at the bottom of the WMI window. You must reboot to make your changes take effect. 15. Download Sample Files: Click on a link to access the corresponding sample WPR files:•wpr.pl — a sample Perl script. •hs.css — a sample cascading style sheet.Network ToolsFigure 163. System Command (Ping) 16. System Command: Choose Trace Route, Ping., or RADIUS Ping. For Trace Route and Ping, fill in IP Address and Timeout. Then click the Execute button to run the command. Figure 164. Radius Ping Command
Wireless Array330 Using Tools on the Wireless ArrayThe RADIUS Ping command is a simple utility that tests connectivity to a RADIUS server by attempting to log in with the specified Username and Password. When using a RADIUS server, this command allows you to verify that the server configuration is correct and whether a particular Username and Password are set up properly. If a client is having trouble accessing the network, you can quickly determine if there is a basic RADIUS problem by using the RADIUS Ping tool. For example, in Figure 165 (A), RADIUS Ping is unable to contact the server. In Figure 165 (B), RADIUS Ping verifies that the host information and secret for a RADIUS server are correct, but that the user account information is not. Select RADIUS allows you to select a RADIUS server that you have already configured. When you make a choice in this field, additional fields will be displayed. Set Select RADIUS to External Radius, Internal Radius, or a server specified for a particular SSID, or select Other Serverto specify another server by entering its Host name or IP address, Port, and shared Secret. Enter the RADIUS Credentials: Username and Password. Select the Authentication Type, PAP or CHAP. Click the Execute button to run the command. The message Testing RADIUS connection appears. Click OKto proceed. Figure 165. Radius Ping OutputAB
Wireless ArrayUsing Tools on the Wireless Array 33117. IP Address: For Ping or Trace Route, enter the IP address of the target device.18. Timeout: For Ping or Trace Route, enter a value (in seconds) before the action times out.19. Execute System Command: Click Execute to start the specified command. Progress of command execution is displayed in the Progressframe. Results are displayed in the Status frame.Progress and Status FramesThe Progress frame displays a progress bar for commands such as Software Upgrade and Ping. The Status frame presents the output from system commands (Ping and Trace Route), as well as other information, such as the results of software upgrade.20. If you want to save the parameters you established in this window for future sessions, click on the Save changes to flash button.
Wireless Array332 Using Tools on the Wireless ArrayCLI The WMI provides this window to allow you to use the Array’s Command Line Interface (CLI). You can enter commands to configure the Array, or display information using show commands. You will not need to log in - you already logged in to the Array when you started the WMI.Figure 166. CLI WindowTo enter a command, simply type it in. The command is echoed and output is shown in the normal way — that is, the same way it would be if you were using the CLI directly. You may use the extra scroll bar inside the right edge of the window to scroll through your output. This window has some minor differences, compared to direct use of the CLI via the console or an SSH connection:The CLI starts in config mode. All configuration and show commands are available in this mode. You can “drill down” the mode further in the usual way. For example, you can type interface iap to change the mode to
Wireless ArrayUsing Tools on the Wireless Array 333config-iap. The prompt will indicate the current command mode, for example:My-Array(config-iap) # You can abbreviate a command and it will be executed if you have typed enough of the command to be unambiguous. The command will not auto-complete, however. Only the abbreviated command that you actually typed will be shown. You can type a partial command and press Tab to have the command auto-complete. If the partial command is ambiguous a list of legal endings is displayed. Entering quit will return you to the previously viewed WMI page.Most, but not all, CLI commands can be run in this window. Specifically the run-test menu of commands is not available in this window. To use the run-test command, please connect using SSH and use CLI directly, or use the System Tools described in this chapter, such as Trace Route, Ping, and RADIUS Ping. Help commands (the ? character) are available, either at the prompt or after you have typed part of a command. OptionsThis window allows you to customize the behavior and appearance of the WMI.Figure 167. WMI Display OptionsProcedure for Configuring Options1. Style: This option allows you to change the appearance and operation of the user interface. Select one of the available styles from the drop-down list. Click the Apply button to view the WMI with the selected style.
Wireless Array334 Using Tools on the Wireless ArrayNote that some styles just change the display appearance (the skin) of WMI, in much the same way as changing the display theme used in Windows 7. Other styles include more extensive changes to the interface. Figure 168. iPhone Style Option For example, the iPhone style option (Figure 168) has a more compact display, suitable for use on smart phones. It shows the main menu in the orange bar at the top, rather than as a tree in its own frame on the left. Clicking one of the menu choices at the top in Figure 168 will display a drop-down menu with the options for that menu choice. Menus may be toggled on and off by clicking on the headers (Status, Configuration, etc.).
Wireless ArrayUsing Tools on the Wireless Array 3352. Refresh Interval in Seconds: Many of the windows in the Status section of the WMI have an Auto Refresh option. You may use this setting to change how often a status or statistics window is refreshed, if its auto refresh option is enabled. Enter the desired number of seconds between refreshes. The default refresh interval is 30 seconds. 3. Close Menu Section when Deselected: When you click a main section such as SSIDs in the left frame of the WMI (the navigation tree), the section is expanded to show submenu choices. Click Yes to automatically close any open submenus when you select a different section. If you click No, all menu sections will remain expanded once opened. No is the default. Note that if you enable this feature and you expand a section by clicking its orange arrow, the section will stay open as you select windows in other menu sections. 4. Clear Screen When Loading New Page: When this option is enabled and you click on a page that takes a long time to load for any reason, the main area of the screen is blanked out and displays a Loading… message. If this option is disabled, WMI simply shows the page you were viewing until the new page loads.
Wireless Array336 Using Tools on the Wireless ArrayLogoutClick on the Logout button to terminate your session. When the session is terminated, you are presented with the Array’s login window.Figure 169. Login Window
Wireless ArrayThe Command Line Interface 337The Command Line InterfaceThis section covers the commands and the command structure used by the Wireless Array’s Command Line Interface (CLI), and provides a procedure for establishing an SSH connection to the Array. Topics discussed include: “Establishing a Secure Shell (SSH) Connection” on page 337.“Getting Started with the CLI” on page 339.“Top Level Commands” on page 341.“Configuration Commands” on page 350.“Sample Configuration Tasks” on page 386.See AlsoEstablishing Communication with the ArrayNetwork MapSystem ToolsEstablishing a Secure Shell (SSH) ConnectionUse this procedure to initialize the system and log in to the Command Line Interface (CLI) via a Secure Shell (SSH) utility, such as PuTTY. When connecting to the unit’s Command Line Interface over a network connection, you must use a Secure SHell version 2 (SSH-2) utility. Make sure that your SSH utility is set up to use SSH-2. 1. Start your SSH session and communicate with the Array via its IP address. •If the Array is connected to a network that uses DHCP, use the address assigned by DHCP. We recommend that you have the Some commands are only available if the Array’s license includes appropriate Xirrus Advanced Feature Sets. If a command is unavailable, an error message will notify you that your license does not support the feature. See “About Licensing and Upgrades” on page 321.
Wireless Array338 The Command Line Interfacenetwork administrator assign a reserved address to the Array for ease of access in the future.•If the network does not use DHCP, use the factory default address 10.0.2.1 to access either the Gigabit 1 or Gigabit 2 Ethernet port. You may need to change the IP address of the port on your computer that is connected to the Array — change that port’s IP address so that it is on the same 10.0.2.xx subnet as the Array port.2. At the login prompt, enter your user name and password (the default for both is admin). Login names and passwords are case-sensitive. You are now logged in to the Array’s Command Line Interface.Figure 170. Logging In
Wireless ArrayThe Command Line Interface 339Getting Started with the CLIThe root command prompt (Root Command Prompt) is the first prompt you see after logging in to the CLI. If you are at a level other than the root command prompt you can return to this prompt at any time by using the exit command to step back through each command prompt level. The root command prompt you see in the CLI window is determined by the host name you assigned to your Array. The prompt Xirrus_Wi-Fi_Array is displayed throughout this document simply because this is the host name assigned to the Array used for development. To terminate your session at any time, use the quit command.Inputting CommandsWhen inputting commands you need only type as many characters as the system requires before it recognizes your input. For example, you can type the abbreviated term config to access the configure prompt.Getting HelpThe CLI offers the following two levels of assistance:help CommandThe help command is only available at the root command prompt. Initiating this command generates a window that provides information about the types of help that are available with the CLI.Figure 171. Help Window
Wireless Array340 The Command Line Interface? CommandThis command is available at any prompt and provides either FULL or PARTIAL help. Using the ? (question mark) command when you are ready to enter an argument will display all the possible arguments (full help). Partial help is provided when you enter an abbreviated argument and you want to know what arguments will match your input.Figure 172. Full HelpFigure 173 shows an example of how the Help system can provide the argument and format when specifying the time zone under the date-timecommand.Figure 173. Partial Help
Wireless ArrayThe Command Line Interface 341Top Level CommandsThis section offers an at-a-glance view of all top level commands — organized alphabetically. Top level commands are defined here as commands that are directly accessible from the root command prompt (Xirrus_Wi-Fi_Array#). The root command prompt is based on the host name assigned to your Array. When inputting commands, be aware that all commands are case-sensitive.All other commands are considered second level configuration commands — these are the commands you use to configure specific elements of the Array’s features and functionality. For a listing of these commands with examples of command formats and structure, go to “Configuration Commands” on page 350.Root Command PromptThe following table shows the top level commands that are available from the root command prompt [Xirrus_Wi-Fi_Array].Command Description@ Type @n to execute command n (as shown by the history command).configure Enter the configuration mode. See “Configuration Commands” on page 350. exit Exit the CLI and terminate your session — if this command is used at any level other than the root command prompt you will simply exit the current level (step back) and return to the previous level.help Show a description of the interactive help system. See also, “Getting Help” on page 339. history List history of commands that have been executed.more Turn terminal pagination ON or OFF.quit Exit the Command Line Interface (from any level).search Search for pattern in show command output.
Wireless Array342 The Command Line Interfaceconfigure CommandsThe following table shows the second level commands that are available with the top level configure command [Xirrus_Wi-Fi_Array(config)#].show Display information about the selected item. See “show Commands” on page 345. statistics Display statistical data about the Array. See “statistics Commands” on page 348. uptime Display the elapsed time since the last boot.Command Description@ Type @n to execute command n (as shown by the history command).acl Configure the Access Control List.admin Define administrator access parameters. cdp Configure Cisco Discovery Protocol settings. clear Remove/clear the requested elements.cluster Make configuration changes to multiple Arrays.contact-info Contact information for assistance on this Array.date-time Configure date and time settings.dhcp-server Configure the DHCP Server.dns Configure the DNS settings.end Exit the configuration mode.exit Go UP one mode level.file Manage the file system.Command Description
Wireless ArrayThe Command Line Interface 343filter Define protocol filter parameters.group Define user groups with parameter settingshelp Description of the interactive Help system.history List history of commands that have been executed.hostname Host name for this Array.interface Select the interface to configure.load Load running configuration from flashlocation Location name for this Array.management Configure array management parametersmore Turn ON or OFF terminal pagination.netflow Configure NetFlow data collector. no Disable (if enabled) or set to default value.quit Exit the Command Line Interface.radius-server Configure the RADIUS server parameters.reboot Reboot the Array.reset Reset all settings to their factory default values and reboot.restore Reset all settings to their factory default values and reboot.run-tests Run selective tests.save Save the running configuration to FLASH.search Search for pattern in show command output.security Set the security parameters for the Array.Command Description
Wireless Array344 The Command Line Interfaceshow Display current information about the selected item.snmp Enable, disable or configure SNMP.ssid Configure the SSID parameters.statistics Display statistics.syslog Enable, disable or configure the Syslog Server.uptime Display time since the last boot.vlan Configure VLAN parameters.wifi-tag Configure VLAN parameters.Command Description
Wireless ArrayThe Command Line Interface 345show CommandsThe following table shows the second level commands that are available with the top level show command [Xirrus_Wi-Fi_Array# show].Command Descriptionacl Display the Access Control List.admin Display the administrator list or login information.array-info Display system information.associated-stationsDisplay stations that have associated to the Array.boot-env Display Boot loader environment variables. capabilities Display detailed station capabilities. cdp Display Cisco Discovery Protocol settings.channel-list Display list of Array’s 802.11a(n) and bg(n) channels. clear-text Display and enter passwords and secrets in the clear. conntrack Display the Connection Tracking table. console Display terminal settings.contact-info Display contact information.date-time Display date and time settings summary.dhcp-leases Display IP addresses (leases) assigned to stations by the DHCP server. dhcp-pool Display internal DHCP server settings summary information.diff Display the difference between configurations.dns Display DNS summary information.
Wireless Array346 The Command Line Interfaceerror-numbers Display the detailed error number in error messages.ethernet Display Ethernet interface summary information.external-radius Display summary information for the external RADIUS server settings.factory-config Display the Array factory configuration information.filters Display filter information.iap Display IAP configuration information.internal-radius Display the users defined for the embedded RADIUS server.lastboot-config Display Array configuration at the time of the last boot-up.management Display settings for managing the Array, plus Standby and other information. network-map Display network map information.realtime-monitor Display realtime statistics for all IAPs. rogue-ap Display rogue AP information.route Display the routing table. rssi-map Display RSSI map by IAP for station.running-config Display configuration information for the Array currently running.saved-config Display the last saved Array configuration.security Display security settings summary information.self-test Display self test results.snmp Display SNMP summary information.Command Description
Wireless ArrayThe Command Line Interface 347spanning-tree Display spanning tree information. spectrum-analyzerDisplay spectrum analyzer measurements. ssid Display SSID summary information.stations Display station information.statistics Display statistics.syslog Display the system log.syslog-settings Display the system log (Syslog) settings.temperature Display the current board temperatures.unassociated-stations Display unassociated station information. vlan Display VLAN information.wds Display WDS information.<cr> Display configuration or status information.Command Description
Wireless Array348 The Command Line Interfacestatistics CommandsThe following table shows the second level commands that are available with the top level statistics command [Xirrus_Wi-Fi_Array# statistics].Command Descriptionethernet Display statistical data for all Ethernet interfaces.Ethernet Nameeth0, gig1, gig2Display statistical data for the defined Ethernet interface (either eth0, gig1 or gig2).FORMAT:statistics gig1 filter Display statistics for defined filters (if any).FORMAT:statistics filter [detail] filter-list Display statistics for defined filter list (if any).FORMAT:statistics filter <filter-list> iap Display statistical data for the defined IAP.FORMAT:statistics iap iap2station Display statistical data about associated stations.FORMAT:statistics station billwvlan Display statistical data for the defined VLAN. You must use the VLAN number (not its name) when defining a VLAN.FORMAT:statistics vlan 1
Wireless ArrayThe Command Line Interface 349wds Display statistical data for the defined active WDS (Wireless Distribution System) links.FORMAT:statistics wds 1<cr> Display configuration or status information.Command Description
Wireless Array350 The Command Line InterfaceConfiguration CommandsAll configuration commands are accessed by using the configure command at the root command prompt (Xirrus_Wi-Fi_Array#). This section provides a brief description of each command and presents sample formats where deemed necessary. The commands are organized alphabetically. When inputting commands, be aware that all commands are case-sensitive.To see examples of some of the key configuration tasks and their associated commands, go to “Sample Configuration Tasks” on page 386.acl The acl command [Xirrus_Wi-Fi_Array(config)# acl] is used to configure the Access Control List.Command Descriptionadd Add a MAC address to the list.FORMAT:acl add AA:BB:CC:DD:EE:FFdel Delete a MAC address from the list.FORMAT:acl del AA:BB:CC:DD:EE:FFdisable Disable the Access Control ListFORMAT:acl disableenable Enable the Access Control ListFORMAT:acl enablereset Delete all MAC addresses from the list.FORMAT:acl reset
Wireless ArrayThe Command Line Interface 351admin The admin command [Xirrus_Wi-Fi_Array(config-admin)#] is used to configure the Administrator List.Command Descriptionadd Add a user to the Administrator List.FORMAT:admin add [userID]del Delete a user to the Administrator List.FORMAT:admin del [userID]edit Modify user in the Administrator List.FORMAT:admin edit [userID]radius Define a RADIUS server to be used for authenticating administrators.FORMAT:admin radius [disable | enable | off | on | timeout <seconds> | auth-type [PAP | CHAP]] admin radius [primary |secondary]  port <portid> server [<ip-addr> | <host>] secret <shared-secret>reset Delete all users and restore the default user.FORMAT:admin reset
Wireless Array352 The Command Line Interfacecdp The cdp command [Xirrus_Wi-Fi_Array(config)# cdp] is used to configure the Cisco Discovery Protocol.Command Descriptiondisable Disable the Cisco Discovery ProtocolFORMAT:cdp disableenable Enable the Cisco Discovery ProtocolFORMAT:cdp enablehold-time Select CDP message hold time before messages received from neighbors expire.FORMAT:cdp hold-time [# seconds]interval The Array sends out CDP announcements at this interval. FORMAT:cdp interval [# seconds] off Disable the Cisco Discovery ProtocolFORMAT:cdp offon Enable the Cisco Discovery ProtocolFORMAT:cdp on
Wireless ArrayThe Command Line Interface 353clear The clear command [Xirrus_Wi-Fi_Array(config)# clear] is used to clear requested elements.Command Descriptionauthentication Deauthenticate a station.FORMAT:clear station [authenticated station]history Clear the history of CLI commands executed.FORMAT:clear history screen Clear the screen where you’re viewing CLI output.FORMAT:clear syslogstatistics Clear the statistics for a requested interface.FORMAT:clear statistics [eth0]syslog Clear all Syslog messages, but continue to log new messages.FORMAT:clear syslog
Wireless Array354 The Command Line InterfaceclusterThe cluster command [Xirrus_Wi-Fi_Array(config)# cluster] is used to create and operate clusters. Clusters allow you to configure multiple Arrays at the same time. Using CLI (or WMI), you may define a set of Arrays that are members of the cluster. Then you may switch the Array to Cluster operating mode for a selected cluster, which sends all successive configuration commands issued via CLI or WMI to all of the member Arrays. When you exit cluster mode, configuration commands revert to applying only to the Array to which you are connected.For more information, see “Clusters” on page 314. Command Descriptionadd Create a new Array cluster. Enters edit mode for that cluster to allow you to specify the Arrays that belong to the cluster.FORMAT:cluster add [cluster-name]del Delete an Array cluster. Type del ? to list the existing clusters.FORMAT:cluster del [cluster-name]edit Enter edit mode for selected cluster to add or delete Arrays that belong to the cluster.FORMAT:cluster edit [cluster-name]end Exit Cluster configuration mode. Configuration returns to normal operation, affecting this Array only.FORMAT:cluster end
Wireless ArrayThe Command Line Interface 355contact-info The contact-info command [Xirrus_Wi-Fi_Array(config)# contact-info] is used for managing administrator contact information.operate Enter Cluster operation mode. All configuration commands are applied to all of the selected cluster’s member Arrays until you give the end command (see above). FORMAT:cluster operate [cluster-name]reset Delete all clusters.FORMAT:cluster resetCommand Descriptionemail Add an email address for the contact (must be in quotation marks).FORMAT:contact-info email [“contact@mail.com”]name Add a contact name (must be in quotation marks).FORMAT:contact-info name [“Contact Name”]phone Add a telephone number for the contact (must be in quotation marks).FORMAT:contact-info phone [“8185550101”]Command Description
Wireless Array356 The Command Line Interfacedate-time The date-time command [Xirrus_Wi-Fi_Array(config-date-time)#] is used to configure the date and time parameters. Your Array supports the Network Time Protocol (NTP) in order to ensure that the Array’s internal time is accurate. NTP is set to UTC time by default; however, you can set the time zone so that your Array will display local time. This is done by defining an offset from the UTC value. For example, Pacific Standard Time is 8 hours behind UTC time, so the offset from UTC time would be -8.Command Descriptiondst_adjust Enable adjustment for daylight savings.FORMAT:date-time dst_adjustno Disable daylight savings adjustment.FORMAT:date-time no dst_adjustntp Enable the NTP server.FORMAT:date-time ntp on (or off to disable)offset Set an offset from Greenwich Mean Time.FORMAT:date-time no dst_adjustset Set the date and time for the Array.FORMAT:date-time set [10:24 10/23/2007]timezone Configure the time zone.FORMAT:date-time timezone [-8]
Wireless ArrayThe Command Line Interface 357dhcp-server The dhcp-server command [Xirrus_Wi-Fi_Array(config-dhcp-server)#] is used to add, delete and modify DHCP pools.Command Descriptionadd Add a DHCP pool.FORMAT:dhcp-server add [dhcp pool]del Delete a DHCP pool.FORMAT:dhcp-server del [dhcp pool]edit Edit a DHCP poolFORMAT:dhcp-server edit [dhcp pool]reset Delete all DHCP pools.FORMAT:dhcp-server reset
Wireless Array358 The Command Line Interfacedns The dns command [Xirrus_Wi-Fi_Array(config-dns)#] is used to configure your DNS parameters.Command Descriptiondomain Enter your domain name.FORMAT:dns domain [www.mydomain.com]server1 Enter the IP address of the primary DNS server.FORMAT:dns server1 [1.2.3.4]server2 Enter the IP address of the secondary DNS server.FORMAT:dns server1 [2.3.4.5]server3 Enter the IP address of the tertiary DNS server.FORMAT:dns server1 [3.4.5.6]
Wireless ArrayThe Command Line Interface 359file The file command [Xirrus_Wi-Fi_Array(config-file)#] is used to manage files.Command Descriptionactive-image Validate and commit a new array software image. backup-image Validate and commit a new backup software image. check-image Validate a new array software image. chkdsk Check flash file system.copycpCopy a file to another file.FORMAT:file copy [sourcefile destinationfile]dir List the contents of a directory.FORMAT:file dir [directory]erase Delete a file from the FLASH file system.FORMAT:file erase [filename]format Format flash file system.ftp Open an FTP connection with a remote server. Files will be transferred in binary mode. FORMAT:file ftp host {<hostname> |<ip>} [port <port_#>]  [user {anonymous | <username> password <passwd> } ] { put <source_file> [<dest_file>] | get <source_file> [<dest_file>] }Note: Any time you transfer any kind of software image file for the Array, it must be transferred in binary mode, or the file may be corrupted. list List the contents of a file.FORMAT:file list [filename]
Wireless Array360 The Command Line Interfaceremote-config When the Array boots up, it fetches the specified configuration file from the TFTP server defined in the file remote-server command, and uses this configuration. This must be an Array configuration file with a .conf extension. A partial configuration file may be used. For instance, if you wish to use a single configuration file for all of your Arrays but don't want to have the same IP address for each Array, you may remove the ipaddr line from the file. You can then load the file on each array and the local IP addresses will not change.FORMAT:file remote-config <config-file.conf> Note: If you enter file remote-config ?, the help response suggests possibilities by listing all of the configuration files that are currently in the Array’s flash.remote-image When the Array boots up, it fetches the named image file from the TFTP server defined in the file remote-server command, and upgrades to this file before booting. This must be an Array image file with a .bin extension.FORMAT:file remote-image <image-file.bin> Note: This will happen every time that the Array reboots. If you only want to fetch the remote-image one time be sure to turn off the remote image option after the initial download.remote-server Sets up a TFTP server to be used for automated remote update of software image and configuration files when rebooting. FORMAT:file remote-server A.B.C.D rename Rename a file.Command Description
Wireless ArrayThe Command Line Interface 361scp Copy a file to or from a remote system. You may specify the port to use.tftp Open a TFTP connection with a remote server.FORMAT:file tftp host {<hostname> |<ip>} [port <port_#>]  [user {anonymous | <username> password <passwd> } ] { put <source_file> [<dest_file>] | get <source_file> [<dest_file>] }Note: Any time you transfer any kind of software image file for the Array, it must be transferred in binary mode, or the file may be corrupted. Command Description
Wireless Array362 The Command Line Interfacefilter The filter command [Xirrus_Wi-Fi_Array(config-filter)#] is used to manage protocol filters and filter lists.Command Descriptionadd Add a filter. Details about the air cleaner feature are after the end of this table.FORMAT:filter add [air-cleaner |name]add-list Add a filter list.FORMAT:filter add-list [name]del Delete a filter.FORMAT:filter del [name]del-list Delete a filter list.FORMAT:filter del-list [name]edit Edit a filter.FORMAT:filter edit [name type]edit-list Edit a filter listFORMAT:filter edit-list [name type]enable Enable a filter list.FORMAT:filter enable move Change a filter priority.FORMAT:filter move [name priority]
Wireless ArrayThe Command Line Interface 363Air CleanerThe air cleaner feature offers a number of predetermined filter rules that eliminate a great deal of unnecessary wireless traffic, resulting in improved performance. You may select all of the air cleaner rules for the greatest effect, or only specific rules, such as broadcast or multicast, to eliminate only a particular source of traffic. The following options are offered:MyArray(config)# filter add air-cleaner all All air cleaner filters arp Eliminate station to station ARPs over the air broadcast Eliminate broadcast traffic from the air dhcp Eliminate stations serving DHCP addresses from the air multicast Eliminate chatty multicast traffic from the air netbios Eliminate NetBIOS traffic from the airIf you select all, the rules shown in Figure 174 are added to the predefined filter list named Global. These rules assume that you have station-to-station blocking enabled, that a DHCP server is on the Array’s wired connection, and that you want to block most all multicast and all broadcast traffic not vital to normal off Disable a filter list.FORMAT:filter offon Enable a filter list.FORMAT:filter on reset Delete all protocol filters and filter lists.FORMAT:filter resetstateful Enable or disable stateful filtering (firewall).FORMAT:Stateful [enable | disable | on |off] Command Description
Wireless Array364 The Command Line Interfaceoperation. If you find that there is a particular type of multicast or broadcast traffic that you want to allow, just add a specific allow filter for it before the deny filter in this list that would normally block it. Add or delete any of the Multicast rules as necessary for a specific site. Remember that the order of the rules is important. Figure 174. Air Cleaner Filter RulesExplanations of some sample rules are below.Air-cleaner-Arp.1 blocks ARPs from one client from being transmitted to clients via all of the radios. The station to station block setting doesn't block this traffic, so this filter eliminates this unnecessary traffic.Air-cleaner-Dhcp.1 drops all DHCP client traffic coming in from the gigabit interface. This traffic doesn't need to be transmitted by the radios since there shouldn't be any DHCP server associated to the radios and offering DHCP addresses. For large subnets the DHCP discover/request broadcast traffic can be significant.Air-cleaner-Dhcp.2 drops all DHCP server traffic coming in from the radio interfaces. There should not be any DHCP server associated to the radios. These rogue DHCP servers are blocked from doing any damage with this filter. There have been quite a few cases in public venues like schools and conventions where such traffic is seen.
Wireless ArrayThe Command Line Interface 365Air-cleaner-Mcast.1 drops all multicast traffic with a destination MAC address starting with 01. This filters out a lot of IP multicast traffic that starts with 224.Air-cleaner-Mcast.2 drops all multicast traffic with a destination MAC address starting with 33. A lot of IPv6 traffic and other multicast traffic is blocked by this filter.Air-cleaner-Mcast.3 drops all multicast traffic with a destination MAC address starting with 09. A lot of Appletalk traffic and other multicast traffic is blocked by this filter. Note that for OSX 10.6.* Snow Leopard no longer supports Appletalk.Air-cleaner-Bcast.1 allows all ARP traffic (other than the traffic that was denied by Air-cleaner-Arp.1). This is needed because Air-cleaner-Bcast.5would drop this valid traffic. Air-cleaner-Bcast.4 allows all XRP traffic from Arrays to be received from the wire. This is needed because Air-cleaner-Bcast.5 would drop this valid traffic. Air-cleaner-Bcast.5 drops all other broadcast traffic that hasn't previously been explicitly allowed. This filter will catch all UDP broadcast traffic as well as all other known and unknown protocol broadcast traffic.
Wireless Array366 The Command Line Interfacegroup The group command [Xirrus_Wi-Fi_Array(config)# group] is used to create and configure user groups. User groups allow administrators to assign specific network parameters to users through RADIUS privileges rather than having to map users to a specific SSID. Groups provide flexible control over user privileges without the need to create large numbers of SSIDs. For more information, see “Groups” on page 246. hostname The hostname command [Xirrus_Wi-Fi_Array(config)# hostname] is used to change the hostname used by the Array.Command Descriptionadd Create a new user group. FORMAT:group add [group-name]del Delete a user group.FORMAT:group del [group-name]edit Set parameters values for a group. FORMAT:group edit [group-name]reset Reset the group.FORMAT:group resetCommand Descriptionhostname Change the hostname of the Array.FORMAT:hostname [name]
Wireless ArrayThe Command Line Interface 367interface The interface command [Xirrus_Wi-Fi_Array(config)# interface] is used to select the interface that you want to configure. To see a listing of the commands that are available for each interface, use the ? command at the selected interface prompt. For example, using the ? command at the Xirrus_Wi-Fi_Array(config-gig1}#prompt displays a listing of all commands for the gig1 interface.load The load command [Xirrus_Wi-Fi_Array(config)# load] loads a configuration file.Command Descriptionconsole Select the console interface. The console interface is used for management purposes only.FORMAT:interface consolegig1 Select the Gigabit 1 interface.FORMAT:interface gig1gig2 Select the Gigabit 2 interface.FORMAT:interface gig2iap Select an IAP.FORMAT:interface iapCommand Descriptionfactory.conf Load the factory settings configuration file. FORMAT:load [factory.conf]
Wireless Array368 The Command Line Interfacelocation The location command [Xirrus_Wi-Fi_Array(config)# location] is used to set the location for the Array.management The management command [Xirrus_Wi-Fi_Array(config)# management] enters management mode, where you may configure management parameters.lastboot.conf Load the configuration file from the last boot-up. FORMAT:load [lastboot.conf][myfile].conf If you have saved a configuration, enter its name to load it. FORMAT:load [myfile.conf]saved.conf Load the configuration file with the last saved settings. FORMAT:load [saved.conf]Command Description<cr> Set the location for the Array.FORMAT:location [newlocation]Command Description<cr> Enter management mode.FORMAT:management <cr>Command Description
Wireless ArrayThe Command Line Interface 369The following types of settings may be configured in management mode:banner Configure login banner messagesconsole Configure console management parametershttps Enable/disable HTTPS accesslicense Set array software license keyload Load running configuration from flashmax-auth-attempts Maximum number of authentication (login) attempts (0 means unlimited)network-assurance Enable/disable network assurancereauth-period Time between failed CLI login attemptsrestore Restore to previous saved configrevert Revert to saved configuration after delay if configuration not savedsave Save running configuration to flashssh Enable/disable SSH accessstandby Configure standby parameterstelnet Enable/disable telnet accessuptime Display time since last bootxircon Enable/disable xircon access. See Xircon User’s Guide for more information.
Wireless Array370 The Command Line Interfacemore The more command [Xirrus_Wi-Fi_Array(config)# more] is used to turn terminal pagination ON or OFF.Command Descriptionoff Turn OFF terminal pagination.FORMAT:more offon Turn ON terminal pagination.FORMAT:more on
Wireless ArrayThe Command Line Interface 371netflowThe netflow command [Xirrus_Wi-Fi_Array(config-netflow)#] is used to enable or disable, or configure sending IP flow information (traffic statistics) to the collector you specify.Command Descriptiondisable Disable netflow.FORMAT:netflow disableenable Enable netflow.FORMAT:netflow enableoff Disable netflow.FORMAT:netflow offon Enable netflow.FORMAT:netflow oncollector Set the netflow collector IP address or fully qualified domain name (host.domain). Only one collector may be set. If port is not specified, the default is 2055. FORMAT:netflow collector host {<ip-addr> | <domain>} [port <port#>]
Wireless Array372 The Command Line Interfaceno The no command [Xirrus_Wi-Fi_Array(config)# no] is used to disable a selected element or set the element to its default value.Command Descriptionacl Disable the Access Control List.FORMAT:no acldot11a Disable all 802.11a(n) IAPs (radios).FORMAT:no dot11adot11bg Disable all 802.11bg(n) IAPs (radios).FORMAT:no dot11bghttps Disable https access.FORMAT:no httpsintrude-detect Disable intrusion detection.FORMAT:no intrude-detectmanagement Disable management on all Ethernet interfaces.FORMAT:no managementmore Disable terminal pagination.FORMAT:no morentp Disable the NTP server.FORMAT:no ntp
Wireless ArrayThe Command Line Interface 373snmp Disable SNMP features.FORMAT:no snmpssh Disable ssh access.FORMAT:no sshsyslog Disable the Syslog services.FORMAT:no syslogtelnet Disable Telnet access.FORMAT:no telnetETH-NAME Disable the selected Ethernet interface (eth0, gig1 or gig2). You cannot disable the console interface. with this command.FORMAT:no eth0 (gig1 or gig2)Command Description
Wireless Array374 The Command Line Interfacequit The quit command [Xirrus_Wi-Fi_Array(config)# quit] is used to exit the Command Line Interface.radius-server The radius-server command [Xirrus_Wi-Fi_Array(config-radius-server)#] is used to configure the external and internal RADIUS server parameters.Command Description<cr> Exit the Command Line Interface.FORMAT:quitIf you have made any configuration changes and your changes have not been saved, you are prompted to save your changes to Flash.At the prompt, answer Yes to save your changes, or answer No to discard your changes.Command Descriptionexternal Configure an external RADIUS server.FORMAT:radius-server externalTo configure a RADIUS server (primary, secondary, or accounting server, by IP address or host name), and the reporting interval use:radius-server external accountinginternal Configure the external RADIUS server.FORMAT:radius-server internaluse Choose the active RADIUS server (either external or internal).FORMAT:use external (or internal)
Wireless ArrayThe Command Line Interface 375reboot The reboot command [Xirrus_Wi-Fi_Array(config)# reboot] is used to reboot the Array. If you have unsaved changes, the command will notify you and give you a chance to cancel the reboot. reset The reset command [Xirrus_Wi-Fi_Array(config)# reset] is used to reset all settings to their default values then reboot the Array.Command Description<cr> Reboot the Array.FORMAT:rebootdelay Reboot the Array after a delay of 1 to 60 seconds.FORMAT:reboot delay [n]Command Description<cr> Reset all configuration parameters to their factory default values.FORMAT:resetThe Array is rebooted automatically.preserve-ip-settingsPreserve all ethernet and VLAN settings and reset all other configuration parameters to their factory default values.FORMAT:reset preserve-ip-settingsThe Array is rebooted automatically.
Wireless Array376 The Command Line Interfacerestore The restore command [Xirrus_Wi-Fi_Array(config)# restore] is used to restore configuration to a version that was previously saved locally. Command Description?Use this to display the list of available config files.FORMAT:restore ?<filename> Enter the name of the locally saved configuration to restore.FORMAT:restore <config-filename>
Wireless ArrayThe Command Line Interface 377run-tests The run-tests command [Xirrus_Wi-Fi_Array(run-tests)#] is used to enter run-tests mode, which allows you to perform a range of tests on the Array.Command Description<cr> Enter run-tests mode.FORMAT:run-tests iperf Execute iperf utility.FORMAT:run-tests iperfkill-beacons Turn off beacons for selected single IAP.FORMAT:run-tests kill-beacons [off | iap-name] kill-probe-responses Turn off probe responses for selected single IAP.FORMAT:run-tests kill-probe-responses [off | iap-name] led LED test.FORMAT:run-tests led [flash | rotate] memtest Execute memory tests.FORMAT:run-tests memtestping Execute ping utility.FORMAT:run-tests ping [host-name | ip-addr]
Wireless Array378 The Command Line Interfaceradius-ping Special ping utility to test the connection to a RADIUS server.FORMAT:run-tests radius-ping [external | ssid <ssidnum>] [primary | secondary] user <raduser> password <radpasswd> auth-type [CHAP | PAP]run-tests radius-ping [internal | server <radserver> port <radport> secret <radsecret> ] user <raduser> password <radpasswd> auth-type [CHAP | PAP]You may select a RADIUS server that you have already configured (ssid or external or internal) or specify another server. rlb Run manufacturing radio loopback test.FORMAT:run-tests rlb {optional command line switches}self-test Execute self-test.FORMAT:run-tests self-test {logfile-name (optional)]site-survey Enable or disable site survey mode.FORMAT:run-tests site-survey [on | off | enable | disable] ssh Execute ssh utility.FORMAT:run-tests ssh [hostname | ip-addr] [command-line-switches (optional)] tcpdump Execute tcpdump utility to dump traffic for selected interface or VLAN. Supports 802.11 headers.FORMAT:run-tests tcpdumpCommand Description
Wireless ArrayThe Command Line Interface 379security The security command [Xirrus_Wi-Fi_Array(config-security)#] is used to establish the security parameters for the Array.telnet Execute telnet utility.FORMAT:run-tests telnet [hostname | ip-addr] [command-line-switches (optional)] traceroute Execute traceroute utility.FORMAT:run-tests traceroute [host-name | ip-addr]Command Descriptionwep Set the WEP encryption parameters.FORMAT:security wepwpa Set the WEP encryption parameters.FORMAT:security wpaCommand Description
Wireless Array380 The Command Line Interfacesnmp The snmp command [Xirrus_Wi-Fi_Array(config-snmp)#] is used to enable, disable, or configure SNMP.Command Descriptionv2 Enable SNMP v2.FORMAT:snmp v2v3 Enable SNMP v3.FORMAT:snmp v3trap Configure traps for SNMP. Up to four trap destinations may be configured, and you may specify whether to send traps for authentication failure. FORMAT:snmp trap
Wireless ArrayThe Command Line Interface 381ssid The ssid command [Xirrus_Wi-Fi_Array(config-ssid)#] is used to establish your SSID parameters.Command Descriptionadd Add an SSID.FORMAT:ssid add [newssid]del Delete an SSID.FORMAT:ssid del [oldssid]edit Edit an existing SSID.FORMAT:ssid edit [existingssid]reset Delete all SSIDs and restore the default SSID.FORMAT:ssid reset
Wireless Array382 The Command Line Interfacesyslog The syslog command [Xirrus_Wi-Fi_Array(config-syslog)#] is used to enable, disable, or configure the Syslog server.Command Descriptionconsole Enable or disable the display of Syslog messages on the console, and set the level to be displayed. All messages at this level and lower (i.e., more severe) will be displayed.FORMAT:syslog console [on/off] level [0-7]disable Disable the Syslog server.FORMAT:syslog disableemail Disable the Syslog server.FORMAT:syslog email from [email-from-address]  level [0-7] password [email-acct-password] server [email-server-IPaddr]  test [test-msg-text] to-list [recipient-email-addresses] user [email-acct-username]enable Enable the Syslog server.FORMAT:syslog enablelocal-file Set the size and/or severity level (all messages at this level and lower will be logged).FORMAT:syslog local-file size [1-500] level [0-7]no Disable the selected feature.FORMAT:syslog no [feature]
Wireless ArrayThe Command Line Interface 383uptime The uptime command [Xirrus_Wi-Fi_Array(config)# uptime] is used to display the elapsed time since you last rebooted the Array. off Disable the Syslog server.FORMAT:syslog offon Enable the Syslog server.FORMAT:syslog onprimary Set the IP address of the primary Syslog server and/or the severity level of messages to be logged.FORMAT:syslog primary [1.2.3.4] level [0-7]secondary Set the IP address of the secondary (backup) Syslog server and/or the severity level of messages to be logged.FORMAT:syslog primary [1.2.3.4] level [0-7]Command Description<cr> Display time since last reboot.FORMAT:uptimeCommand Description
Wireless Array384 The Command Line Interfacevlan The vlan command [Xirrus_Wi-Fi_Array(config-vlan)#] is used to establish your VLAN parameters.Command Descriptionadd Add a VLAN.FORMAT:vlan add [newvlan]default-route Assign a VLAN for the default route (for outbound management traffic).FORMAT:vlan default-route [defaultroute]delete Delete a VLAN.FORMAT:vlan delete [oldvlan]edit Modify an existing VLAN.FORMAT:vlan edit [existingvlan]native-vlan Assign a native VLAN (traffic is untagged).FORMAT:vlan native-vlan [nativevlan]no Disable the selected feature.FORMAT:vlan no [feature]reset Delete all existing VLANs.FORMAT:vlan reset
Wireless ArrayThe Command Line Interface 385wifi-tag The wifi-tag command [Xirrus_Wi-Fi_Array(config-wifi-tag)#] is used to enable or disable Wi-Fi tag capabilities. When enabled, the Array listens for and collects information about Wi-Fi RFID tags sent on the designated channels. See also “Wi-Fi Tag” on page 175.Command Descriptiondisable Disable wifi-tag.FORMAT:wifi-tag disableenable Enable wifi-tag.FORMAT:wifi-tag enableoff Disable wifi-tag.FORMAT:wifi-tag offon Enable wifi-tag.FORMAT:wifi-tag ontag-channel-bg Set an 802.11b or g channel for listening for tags.FORMAT:wifi-tag tag-channel-bg <1-255> udp-port Set the UDP port which a tagging server will use to query the Array for tagging information.FORMAT:wifi-tag udp-port <1025-65535>
Wireless Array386 The Command Line InterfaceSample Configuration TasksThis section provides examples of some of the common configuration tasks used with the Wireless Array, including:“Configuring a Simple Open Global SSID” on page 387.“Configuring a Global SSID using WPA-PEAP” on page 388.“Configuring an SSID-Specific SSID using WPA-PEAP” on page 389.“Enabling Global IAPs” on page 390.“Disabling Global IAPs” on page 391.“Enabling a Specific IAP” on page 392.“Disabling a Specific IAP” on page 393.“Setting Cell Size Auto-Configuration for All IAPs” on page 394“Setting the Cell Size for All IAPs” on page 395.“Setting the Cell Size for a Specific IAP” on page 396.“Configuring VLANs on an Open SSID” on page 397.“Configuring Radio Assurance Mode (Loopback Tests)” on page 398.To facilitate the accurate and timely management of revisions to this section, the examples shown here are presented as screen images taken from a Secure Shell (SSH) session (in this case, PuTTY). Depending on the application you are using to access the Command Line Interface, and how your session is set up (for example, font and screen size), the images presented on your screen may be different than the images shown in this section. However, the data displayed will be the same.Some of the screen images shown in this section have been modified for clarity. For example, the image may have been “elongated” to show all data without the need for additional images or scrolling. We recommend that you use the Adobe PDF version of this User’s Guide when reviewing these examples — a hard copy document may be difficult to read.As mentioned previously, the root command prompt is determined by the host name assigned to your Array.
Wireless ArrayThe Command Line Interface 387Configuring a Simple Open Global SSIDThis example shows you how to configure a simple open global SSID.Figure 175. Configuring a Simple Open Global SSID
Wireless Array388 The Command Line InterfaceConfiguring a Global SSID using WPA-PEAPThis example shows you how to configure a global SSID using WPA-PEAP encryption in conjunction with the Array’s Internal RADIUS server.Figure 176. Configuring a Global SSID using WPA-PEAP
Wireless ArrayThe Command Line Interface 389Configuring an SSID-Specific SSID using WPA-PEAPThis example shows you how to configure an SSID-specific SSID using WPA-PEAP encryption in conjunction with the Array’s Internal RADIUS server.Figure 177. Configuring an SSID-Specific SSID using WPA-PEAP
Wireless Array390 The Command Line InterfaceEnabling Global IAPsThis example shows you how to enable all IAPs (radios), regardless of the wireless technology they use.Figure 178. Enabling Global IAPs
Wireless ArrayThe Command Line Interface 391Disabling Global IAPsThis example shows you how to disable all IAPs (radios), regardless of the wireless technology they use.Figure 179. Disabling Global IAPs
Wireless Array392 The Command Line InterfaceEnabling a Specific IAPThis example shows you how to enable a specific IAP (radio). In this example, the IAP that is being enabled is a1 (the first IAP in the summary list).Figure 180. Enabling a Specific IAP
Wireless ArrayThe Command Line Interface 393Disabling a Specific IAPThis example shows you how to disable a specific IAP (radio). In this example, the IAP that is being disabled is a2 (the second IAP in the summary list).Figure 181. Disabling a Specific IAP
Wireless Array394 The Command Line InterfaceSetting Cell Size Auto-Configuration for All IAPsThis example shows how to set the cell size for all enabled IAPs to be auto-configured (auto). (See “Fine Tuning Cell Sizes” on page 29.) The auto_cell option may be used with global_settings, global_a_settings, or global_bg_settings. It sets the cell size of the specified IAPs to auto, and it launches an auto-configuration to adjust the sizes. Be aware that if the intrude-detect feature is enabled on the monitor radio, its cell size is unaffected by this command. Also, any IAPs used in WDS links are unaffected. Auto-configuration may be set to run periodically at intervals specified by auto_cell period (in seconds) if period is non-zero. The percentage of overlap allowed between cells in the cell size computation is specified by auto_cell overlap (0 to 100). This example sets auto-configuration to run every 1200 seconds with an allowed overlap of 5%. It sets the cell size of all IAPs to auto, and runs a cell size auto-configure operation which completes successfully. Figure 182. Setting the Cell Size for All IAPs
Wireless ArrayThe Command Line Interface 395Setting the Cell Size for All IAPsThis example shows you how to establish the cell size for all IAPs (radios), regardless of the wireless technology they use. Be aware that if the intrude-detectfeature is enabled on the monitor radio the cell size cannot be set globally — you must first disable the intrude-detect feature on the monitor radio.In this example, the cell size is being set to small for all IAPs. You have the option of setting IAP cell sizes to small, medium, large, or max. See also, “Fine Tuning Cell Sizes” on page 29.Figure 183. Setting the Cell Size for All IAPs
Wireless Array396 The Command Line InterfaceSetting the Cell Size for a Specific IAPThis example shows you how to establish the cell size for a specific IAP (radio). In this example, the cell size for a2 is being set to medium. You have the option of setting IAP cell sizes to small, medium, large, or max (the default is max). See also, “Fine Tuning Cell Sizes” on page 29.Figure 184. Setting the Cell Size for a Specific IAP
Wireless ArrayThe Command Line Interface 397Configuring VLANs on an Open SSIDThis example shows you how to configure VLANs on an Open SSID.Figure 185. Configuring VLANs on an Open SSIDSetting the default route enables the Array to send management traffic, such as Syslog messages and SNMP information to a destination behind a router.
Wireless Array398 The Command Line InterfaceConfiguring Radio Assurance Mode (Loopback Tests)The Array uses its built-in monitor radio to monitor other radios in the Array. Tests include sending probes on all channels and checking for a response, and checking whether beacons are received from the other radio. If a problem is detected, corrective actions are taken to recover. Loopback mode operation is described in detail in “Array Monitor and Radio Assurance Capabilities” on page 420. The following actions may be configured: alert-only — the Array will issue an alert in the Syslog. repair-without-reboot — the Array will issue an alert and reset radios at the Physical Layer (Layer 1) and possibly at the MAC layer. The reset should not be noticed by users, and they will not need to reassociate. reboot-allowed — the Array will issue an alert, reset the radios, and schedule the Array to reboot at midnight (per local Array time) if necessary. All stations will need to reassociate to the Array. off — Disable IAP loopback tests (no self-monitoring occurs). Radio Assurance mode is off by default.This is a global IAPs setting — the monitor radio will monitor all other radios according to the settings above, and it cannot be set up to monitor particular radios. Radio assurance mode requires Intrusion Detection to be set to Standard.The following example shows you how to configure a loopback test.
Wireless ArrayThe Command Line Interface 399Figure 186. Configuring Radio Assurance Mode (Loopback Testing)
Wireless Array400 The Command Line Interface
Wireless ArrayAppendices 401Appendices
Wireless Array402 AppendicesPage is intentionally blank
Wireless Array403Appendix A: Quick Reference GuideThis section contains product reference information. Use this section to locate the information you need quickly and efficiently. Topics include:“Factory Default Settings” on page 403.“Keyboard Shortcuts” on page 409.Factory Default SettingsThe following tables show the Wireless Array’s factory default settings.Host NameNetwork InterfacesSerialSetting Default ValueHost name Xirrus-WiFi-ArraySetting Default ValueBaud Rate 115200Word Size 8 bitsStop Bits 1Parity No parityTime Out 10 seconds
Wireless Array404Gigabit 1 and Gigabit 2Server SettingsNTPSyslogSetting Default ValueEnabled YesDHCP Bind YesDefault IP Address 10.0.2.1Default IP Mask 255.255.255.0Default Gateway NoneAuto Negotiate OnDuplex FullSpeed 1000 MbpsMTU Size 1500Management Enabled YesSetting Default ValueEnabled NoPrimary time.nist.govSecondary pool.ntp.orgSetting Default ValueEnabled Yes
Wireless Array405SNMPDHCPLocal Syslog Level InformationMaximum Internal Records 500Primary Server NonePrimary Syslog Level InformationSecondary Server NoneSecondary Syslog Level InformationSetting Default ValueEnabled YesRead-Only Community String xirrus_read_onlyRead-Write Community String xirrusTrap Host null (no setting)Trap Port 162Authorization Fail Port OnSetting Default ValueEnabled NoMaximum Lease Time 300 minutesDefault Lease Time 300 minutesIP Start Range 192.168.1.2IP End Range 192.168.1.254Setting Default Value
Wireless Array406Default SSIDSecurity Global Settings - Encryption NAT DisabledIP Gateway NoneDNS Domain NoneDNS Server (1 to 3) NoneSetting Default ValueID xirrusVLAN NoneEncryption OffEncryption Type NoneQoS 2Enabled YesBroadcast OnSetting Default ValueEnabled YesWEP Keys null (all 4 keys)WEP Key Length null (all 4 keys)Default Key ID 1Setting Default Value
Wireless Array407External RADIUS (Global) WPA Enabled NoTKIP Enabled YesAES Enabled YesEAP Enabled YesPSK Enabled NoPass Phrase nullGroup Rekey DisabledSetting Default ValueEnabled YesPrimary Server NonePrimary Port 1812Primary Secret xirrusSecondary Server null (no IP address)Secondary Port 1812Secondary Secret null (no secret)Time Out (before primary server is retired) 600 secondsAccounting DisabledInterval 300 secondsPrimary Server NonePrimary Port 1813Setting Default Value
Wireless Array408Internal RADIUSAdministrator Account and PasswordManagementPrimary Secret null (no secret)Secondary Server NoneSecondary Port 1813Secondary Secret null (no secret)Setting Default ValueEnabled NoThe user database is cleared upon reset to the factory defaults. For the Internal RADIUS Server you have a maximum of 1,000 entries.Setting Default ValueID adminPassword adminSetting Default ValueSSH OnSSH timeout 300 secondsTelnet OffTelnet timeout 300 secondsSetting Default Value
Wireless Array409Keyboard ShortcutsThe following table shows the most common keyboard shortcuts used by the Command Line Interface.See AlsoAn OverviewSerial OnSerial timeout 300 secondsManagement over IAPs Offhttp timeout 300 secondsAction ShortcutCut selected data and place it on the clipboard. Ctrl + XCopy selected data to the clipboard. Ctrl + CPaste data from the clipboard into a document (at the insertion point). Ctrl + VGo to top of screen. Ctrl + ZCopy the active window to the clipboard. Alt + Print ScreenCopy the entire desktop image to the clipboard. Print ScreenAbort an action at any time. EscGo back to the previous screen. bAccess the Help screen. ?Setting Default Value
Wireless Array410Use this Space for Your Notes
Wireless Array411Appendix B: Technical SupportThis appendix provides valuable support information that can help you resolve technical difficulties. Before contacting Xirrus, review all topics below and try to determine if your problem resides with the Wireless Array or your network infrastructure. Topics include:“General Hints and Tips” on page 411“Frequently Asked Questions” on page 412“Array Monitor and Radio Assurance Capabilities” on page 420“RADIUS Vendor Specific Attribute (VSA) for Xirrus” on page 423“Upgrading the Array via CLI” on page 424“Contact Information” on page 429General Hints and TipsThis section provides some useful tips that will optimize the reliability and performance of your Wireless Arrays.The Wireless Array requires careful handling. For best performance, units should be mounted in a dust-free and temperature-controlled environment.If using multiple Arrays in the same area, maintain a distance of at least 100 feet (30m) between Arrays if there is direct line-of-sight between the units, or at least 50 feet (15 m) if a wall or other barrier exists between the units.Keep the Wireless Array away from electrical devices or appliances that generate RF noise. Because the Array is generally mounted on ceilings, be aware of its position relative to lighting (especially fluorescent lighting).If using AC power, each Wireless Array requires its own dedicated AC power outlet. Do not attempt to “piggy-back” AC power to multiple units. To avoid needing to run separate power cables to one or more Arrays, consider using Power over Gigabit Ethernet.
Wireless Array412If you are deploying multiple units, the Array should be oriented so that the monitor radio is oriented in the direction of the least required coverage, because when in monitor mode the radio does not function as an AP servicing stations.The Wireless Array should only be used with Wi-Fi certified client devices.See AlsoContact InformationMultiple SSIDsSecurityVLAN SupportFrequently Asked QuestionsThis section answers some of the most frequently asked questions, organized by functional area.Multiple SSIDsQ. What Are BSSIDs and SSIDs?A. BSSID (Basic Service Set Identifier) refers to an individual access point radio and its associated clients. The identifier is the MAC address of the access point radio that forms the BSS.A group of BSSs can be formed to allow stations in one BSS to communicate to stations in another BSS by way of a backbone that interconnects each access point.The Extended Service Set (ESS) refers to the group of BSSIDs that are grouped together to form one ESS. The ESSID (often referred to as SSID or “wireless network name”) identifies the Extended Service Set. Clients must associate to a single ESS at any given time. Clients ignore traffic from other Extended Service Sets that do not have the same SSID.
Wireless Array413Legacy access points typically support one SSID per access point. Xirrus Wireless Arrays support the ability for multiple SSIDs to be defined and used simultaneously.Q. What would I use SSIDs for?A. The creation of different wireless network names allows system administrators to separate types of users with different requirements. The following policies can be tied to an SSID:Minimum security required to join this SSID.The wireless Quality of Service (QoS) desired for this SSID.The wired VLAN associated with this SSID.As an example, one SSID named accounting might require the highest level of security, while another SSID named guests might have low security requirements.Another example may define an SSID named voice that supports voice over Wireless LAN phones with the highest possible Quality of Service (QoS) definition. This type of SSID might also forward traffic to specific VLANs on the wired network.Q. How do I set up SSIDs?A. Use the following procedure as a guideline. For more detailed information, go to “SSIDs” on page 224.1. From the Web Management Interface, go to the SSID Management page.2. Select Yes to make the SSID visible to all clients on the network. Although the Wireless Array will not broadcast SSIDs that are hidden, clients can still associate to a hidden SSID if they know the SSID name to connect to it.3. Select the minimum security that will be required by users for this SSID.
Wireless Array4144. If desired (optional), select a Quality of Service (QoS) setting for this SSID. The QoS setting you define here will prioritize wireless traffic for this SSID over other SSID wireless traffic.5. If desired (optional), select a VLAN that you want this traffic to be forwarded to on the wired network.6. If desired (optional), you can select which radios this SSID will not be available on — the default is to make this SSID available on all radios.7. Click on the Save changes to flash if you wish to make your changes permanent.8. If you need to edit any of the SSID settings, you can do so from the SSID Management page.See AlsoContact InformationGeneral Hints and TipsSecuritySSIDsSSID ManagementVLAN SupportSecurityQ. How do I know my management session is secure?A. Follow these guidelines:Administrator passwordsAlways change the default administrator password (the default is admin), and choose a strong replacement password. When appropriate, issue read only administrator accounts.SSH versus TelnetBe aware that Telnet is not secure over network connections and should be used only with a direct serial port connection. When
Wireless Array415connecting to the unit’s Command Line Interface over a network connection, you must use a Secure SHell (SSH) utility. The most commonly used freeware providing SSH tools is PuTTY. The Array only allows SSH-2 connections, so your SSH utility must be set up to use SSH-2. Configuration auditingDo not change approved configuration settings. The optional Xirrus Management System (XMS) offers powerful management features for small or large Wireless Array deployments, and can audit your configuration settings automatically. In addition, using the XMS eliminates the need for an FTP server.Q. Which wireless data encryption method should I use?A. Wireless data encryption prevents eavesdropping on data being transmitted or received over the airwaves. The Wireless Array allows you to establish the following data encryption configuration options:OpenThis option offers no data encryption and is not recommended, though you might choose this option if clients are required to use a VPN connection through a secure SSH utility, like PuTTy.WEP (Wired Equivalent Privacy)This option provides minimal protection (though much better than using an open network). An early standard for wireless data encryption and supported by all Wi-Fi certified equipment, WEP is vulnerable to hacking and is therefore not recommended for use by Enterprise networks.WPA (Wi-Fi Protected Access)This is a much stronger encryption model than WEP and uses TKIP (Temporal Key Integrity Protocol) with AES (Advanced Encryption Standard) to prevent WEP cracks.TKIP solves security issues with WEP. It also allows you to establish encryption keys on a per-user-basis, with key rotation for added security. In addition, TKIP provides Message Integrity
Wireless Array416Check (MIC) functionality and prevents active attacks on the wireless network.AES is the strongest encryption standard and is used by government agencies; however, old legacy hardware may not be capable of supporting the AES mode (it probably won’t work on older wireless clients). Because AES is the strongest encryption standard currently available, it is highly recommended for Enterprise networks.Any of the above encryption modes can be used (and can be used at the same time). Q. Which user authentication method should I use?A. User authentication ensures that users are who they say they are. For example, the most obvious example of authentication is logging in with a user name and password. The Wireless Array allows you to choose between the following user authentication methods:Pre-Shared KeyUsers must manually enter a key (pass phrase) on the client side of the wireless network that matches the key stored by the administrator in your Wireless Arrays.RADIUS 802.1x with EAP802.1x uses a RADIUS server to authenticate large numbers of clients, and can handle different EAP (Extensible Authentication Protocol) authentication methods, including EAP-TLS, EAP-TTLS and EAP-PEAP. The RADIUS server can be internal (provided by the Wireless Array) or external. An external RADIUS server offers more functionality and is recommendedfor large Enterprise deployments.TKIP encryption does not support high throughput rates, per the IEEE 802.11n. TKIP should never be used for WDS links on XN arrays.
Wireless Array417When using this method, user names and passwords must be entered into the RADIUS server for user authentication.MAC Address ACLs (Access Control Lists)MAC address ACLs provide a list of client adapter MAC addresses that are allowed or denied access to the wireless network. Access Control Lists work well when there are a limited number of users — in this case, enter the MAC addresses of each user in the Allow list. In the event of a lost or stolen MAC adapter, enter the affected MAC address in the Deny list.Q. Why do I need to authenticate my Wireless Array units?A. When deploying multiple Wireless Arrays, you may need to define which units are part of which wireless network (for example, if you are establishing more than one network). In this case, you need to employ the Xirrus Management System (XMS) which can authenticate your Arrays automatically and ensure that only authorized units are associated with the defined wireless network.Q. What is rogue AP (Access Point) detection?A. The Wireless Array has integrated monitor capabilities, which can constantly scan the local wireless environment for rogue APs (non-Xirrus devices that are not part of your wireless network), unencrypted transmissions, and other security issues. Administrators can then classify each rogue AP and ensure that these devices do not interrupt or interfere with the network.See AlsoContact InformationGeneral Hints and TipsMultiple SSIDsVLAN SupportVLAN Support
Wireless Array418Q. What Are VLANs?A. VLANs (Virtual Local Area Networks) are a logical grouping of network devices that share a common network broadcast domain. Members of a particular VLAN can be on any segment of the physical network but logically only members of a particular VLAN can see each other.VLANs are defined and implemented using the wired network switches that are VLAN capable. Packets are tagged for transmission on a particular VLAN according to the IEEE 802.1Q standard, with VLAN switches processing packets according to the tag.Q. What would I use VLANs for?A. Logically separating different types of users, systems, applications, or other logical division aids in performance and management of different network devices. Different VLANs can also be assigned with different packet priorities to prioritize packets from one VLAN over packets from another VLAN.VLANs are managed by software settings — instead of physically plugging in and moving network cables and users — which helps to ease network management tasks.Q. What are Wireless VLANs?A. Wireless VLANs allow similar functionality to the wired VLAN definitions and extend the operation of wired VLANs to the wireless side of the network.Wireless VLANs can be mapped to wireless SSIDs so that traffic from wired VLANs can be sent to wireless users of a particular SSID. The reverse is also true, where wireless traffic originating from a particular SSID can be tagged for transmission on a particular wired VLAN.Sixteen SSIDs can be defined on your Wireless Array, allowing a total of sixteen VLANs to be accessed (one per SSID).As an example, to provide guest user access an SSID of guest might be created. This SSID could be mapped to a wired VLAN that segregates unknown users from the rest of the wired network and restricts them to
Wireless Array419Internet access only. Wireless users could then associate to the wireless network via the guest SSID and obtain access to the Internet through the selected VLAN, but would be unable to access other privileged network resources.See AlsoContact InformationGeneral Hints and TipsMultiple SSIDsSecurity
Wireless Array420Array Monitor and Radio Assurance CapabilitiesAll models of the Wireless Array have integrated monitoring capabilities to check that the Array’s radios are functioning correctly, and act as a threat sensor to detect and prevent intrusion from rogue access points. Enabling Monitoring on the ArrayAny radio may be set to monitor the Array or to be a normal IAP radio. In order to enable the functions required for intrusion detection and for monitoring the other Array radios, you must configure one monitor radio on the IAP Settings window as follows:Check the Enabled checkbox.Set Mode to Monitor.Set Channel to Monitor.The settings above will automatically set the Antenna selection to Internal-Omni., also required for monitoring. See the “IAP Settings” on page 256 for more details. The values above are the factory default settings for the Array. How Monitoring WorksWhen the monitor radio has been configured as just described, it performs these steps continuously (24/7) to check the other radios on the Array and detect possible intrusions:1. The monitor radio scans all channels with a 200ms dwell time, hitting all channels about once every 10 seconds.2. Each time it tunes to a new channel it sends out a probe request in an attempt to smoke out rogues.3. It then listens for all probe responses and beacons to detect any rogues within earshot.4. Array radios respond to that probe request with a probe response.Intrusion Detection is enabled or disabled separately from monitoring. See Step 1 in “Advanced RF Settings” on page 282.
Wireless Array421Radio AssuranceThe Array is capable of performing continuous, comprehensive tests on its radios to assure that they are operating properly. Testing is enabled using the Radio Assurance Mode setting on the Advanced RF Settings window (Step 2 in “Advanced RF Settings” on page 282). When this mode is enabled, the monitorradio performs loopback tests on the Array. Radio Assurance Mode requires Intrusion Detection to be set to Standard (See Step 1 in “Advanced RF Settings” on page 282). When Radio Assurance Mode is enabled:1. The Array keeps track of whether or not it hears beacons and probe responses from the Array’s radios. 2. After 10 minutes (roughly 60 passes on a particular channel by the monitor radio), if it has not heard beacons or probe responses from one of the Array’s radios it issues an alert in the Syslog. If repair is allowed (see “Radio Assurance Options” on page 422), the Array will reset and reprogram that particular radio at the Physical Layer (PHY — Layer 1). This action takes under 100ms and stations are not deauthenticated, thus users should not be impacted.3. After another 10 minutes (roughly another 60 passes), if the monitor still has not heard beacons or probe responses from the malfunctioning radio it will again issue an alert in the Syslog. If repair is allowed, the Array will reset and reprogram the MAC (the lower sublayer of the Data Link Layer) and then all of the PHYs. This is a global action that affects all radios. This action takes roughly 300ms and stations are not deauthenticated, thus users should not be impacted.4. After another 10 minutes, if the monitor still has not heard beacons or probe responses from that radio, it will again syslog the issue. If reboot is allowed (see “Radio Assurance Options” on page 422), the Array will schedule a reboot. This reboot will occur at one of the following times, whichever occurs first:•When no stations are associated to the Array•Midnight
Wireless Array422Radio Assurance OptionsIf the monitor detects a problem with an Array radio as described above, it will take action according to the preference that you have specified in the Radio Assurance Mode setting on the Advanced RF Settings window (see Step 2 page 284):Failure alerts only — The Array will issue alerts in the Syslog, but will not initiate repairs or reboots.Failure alerts & repairs, but no reboots — The Array will issue alerts and perform resets of the PHY and MAC as described above. Failure alerts & repairs & reboots if needed — The Array will issue alerts, perform resets of the PHY and MAC, and schedule reboots as described above. Disabled — Disable IAP loopback tests (no self-monitoring occurs). Loopback tests are disabled by default.
Wireless Array423RADIUS Vendor Specific Attribute (VSA) for XirrusA RADIUS VSA is defined for Xirrus Arrays to control administrator privileges settings for user accounts. The RADIUS VSA is used by Arrays to define the following attribute for administrator accounts:Array administrators — the Xirrus-Admin-Role attribute sets the privilege level for this account. Set the value to the string defined in Privilege Level Name as described in “About Creating Admin Accounts on the RADIUS Server” on page 200.
Wireless Array424Upgrading the Array via CLIIf you are experiencing difficulties communicating with the Array using the Web Management Interface, the Array provides lower-level facilities that may be used to accomplish an upgrade via the CLI and the Xirrus Boot Loader (XBL).1. Download the latest software update from the Xirrus FTP site using your Enhanced Care FTP username and password. If you do not have an FTP username and password, contact Xirrus Customer Service for assistance (support@xirrus.com). The software update is provided as a zip file. Unzip the contents to a local temp directory. Take note of the extracted file name in case you need it later on — you may also need to copy this file elsewhere on the network depending on your situation.2. Install a TFTP server software package if you don't have one running. It may be installed on any PC on your network, including your desktop or laptop. The Solar Winds version is freeware and works well. http://support.solarwinds.net/updates/New-customerFree.cfm?ProdId=52The TFTP install process creates the TFTP-Root directory on your C: drive, which is the default target for sending and receiving files. This may be changed if desired. This directory is where you will place the extracted Xirrus software update file(s). If you install the TFTP server on the same computer to which you extracted the file, you may change the TFTP directory to C:\xirrus if desired. You must make the following change to the default configuration of the Solar Winds TFTP server. In the File/Configure menu, select Security, then select Transmi t o nly and click OK.3. Determine the IP address of the computer hosting the TFTP server. (To display the IP address, open a command prompt and type ipconfig)4. Connect your Array to the computer running TFTP using a serial cable, and open a terminal program if you haven't already. Attach a network cable to the Array’s GIG1 port, if it is not already part of your network.
Wireless Array425Boot your Array and watch the progress messages. When Press space bar to exit to bootloader: is displayed, press the space bar. The rest of this procedure is performed using the bootloader. The following steps assume that you are running DHCP on your local network. 5. Type dhcp and hit return. This instructs the Array to obtain a DHCP address and use it during this boot in the bootloader environment. 6. Type dir and hit return to see what's currently in the compact flash. 7. Type del and hit return to delete the contents of the compact flash. 8. Type update server <TFTP-server-ip-addr> XS-5.x-xxxx.bin (the actual Xirrus file name will vary depending on Array model number and software version — use the file name from your software update) and hit return. The software update will be transferred to the Array's memory and will be written to the compact flash card. (See output below.)9. Type reset and hit return. Your Array will reboot, running your new version of software. Sample Output for the Upgrade Procedure:The user actions are highlighted in the output below, for clarity.Username: adminPassword: *****Xirrus-WiFi-Array# configureXirrus-WiFi-Array(config)# rebootAre you sure you want to reboot? [yes/no]: yesArray is being rebooted.Xirrus Boot Loader 1.0.0 (Oct 17 2006 - 13:11:42), Build: 2725Processor | Motorola PowerPC, PVR=80200020 SVR=80300020Board | Xirrus MPC8540 CPU BoardClocks | CPU : 825 MHz DDR : 330 MHz Local Bus: 41 MHz
Wireless Array426L1 cache | Data: 32 KB Inst: 32 KB Status : EnabledWatchdog | Enabled (5 secs)I2C Bus | 400 KHzDTT | CPU:34C RF0:34C RF1:34C RF2:27C RF3:29CRTC | Wed 2007-Nov-05 6:43:14 GMTSystem DDR | 256 MB, Unbuffered Non-ECC (2T)L2 cache | 256 KB, EnabledFLASH | 4 MB, CRC: OKFPGA | 2 Devices programmedPacket DDR | 256 MB, Unbuffered Non-ECC, EnabledNetwork | Mot FEC Mot TSEC1 [Primary] Mot TSEC2IDE Bus 0 | OKCFCard | 122 MB, Model: Hitachi XXM2.3.0Environment| 4 KB, InitializedIn: serialOut: serialErr: serialPress space bar to exit to bootloader: XBL>dhcp[DHCP ] Device : Mot TSEC1 1000BT Full Duplex[DHCP ] IP Addr : 192.168.39.195XBL>dir[CFCard] Directory of / Date Time Size File or Directory name----------- -------- -------- ---------------------------2007-Nov-05 6:01:56 29 lastboot2007-Apr-05 15:47:46 28210390 xs-3.1-0433.bak2007-Mar-01 16:39:42 storage/2007-Apr-05 15:56:38 28210430 xs-3.1-0440.bin2007-Mar-03 0:56:28 wpr/3 file(s), 2 dir(s)
Wireless Array427XBL>del * [CFCard] Delete : 2 file(s) deletedXBL>update server 192.168.39.102 xs-3.0-0425.bin[TFTP ] Device : Mot TSEC1 1000BT Full Duplex[TFTP ] Client : 192.168.39.195[TFTP ] Server : 192.168.39.102[TFTP ] File : xs-3.0-0425.bin[TFTP ] Address : 0x1000000[TFTP ] Loading : ##################################################[TFTP ] Loading : ##################################################[TFTP ] Loading : ###### done[TFTP ] Complete: 12.9 sec, 2.1 MB/sec[TFTP ] Bytes : 27752465 (1a77811 hex)[CFCard] File : xs-3.0-0425.bin[CFCard] Address : 0x1000000[CFCard] Saving : ############################################### done[CFCard] Complete: 137.4 sec, 197.2 KB/sec[CFCard] Bytes : 27752465 (1a77811 hex)XBL>reset[RESET ]Xirrus Boot Loader 1.0.0 (Oct 17 2006 - 13:11:42), Build: 2725Processor | Motorola PowerPC, PVR=80200020 SVR=80300020Board | Xirrus MPC8540 CPU BoardClocks | CPU : 825 MHz DDR : 330 MHz Local Bus: 41 MHzL1 cache | Data: 32 KB Inst: 32 KB Status : EnabledWatchdog | Enabled (5 secs)I2C Bus | 400 KHzDTT | CPU:33C RF0:32C RF1:31C RF2:26C RF3:27CRTC | Wed 2007-Nov-05 6:48:44 GMTSystem DDR | 256 MB, Unbuffered Non-ECC (2T)
Wireless Array428L2 cache | 256 KB, EnabledFLASH | 4 MB, CRC: OKFPGA | 2 Devices programmedPacket DDR | 256 MB, Unbuffered Non-ECC, EnabledNetwork | Mot FEC Mot TSEC1 [Primary] Mot TSEC2IDE Bus 0 | OKCFCard | 122 MB, Model: Hitachi XXM2.3.0Environment| 4 KB, InitializedIn: serialOut: serialErr: serialPress space bar to exit to bootloader: [CFCard] File : xs*.bin[CFCard] Address : 0x1000000[CFCard] Loading : ############################################### done[CFCard] Complete: 26.9 sec, 1.0 MB/sec[CFCard] Bytes : 27752465 (1a77811 hex)[Boot ] Address : 0x01000000[Boot ] Image : Verifying checksum .... OK[Boot ] Unzip : Multi-File Image .... OK[Boot ] Initrd : Loading RAMDisk Image[Boot ] Initrd : Verifying checksum .... OK[Boot ] Execute : Transferring control to OSInitializing hardware ........................................ OKXirrus Wi-Fi ArrayArrayOS Version 3.0-425Copyright (c) 2005-2007 Xirrus, Inc.http://www.xirrus.comUsername:
Wireless Array429Contact InformationXirrus, Inc. is located in Thousand Oaks, California, just 55 minutes northwest of downtown Los Angeles and 40 minutes southeast of Santa Barbara.Xirrus, Inc.2101 Corporate Center DriveThousand Oaks, CA 91320USATel: 1.805.262.16001.800.947.7871 Toll Free in the USFax: 1.866.462.3980www.xirrus.comsupport.xirrus.com
Wireless Array430
Wireless Array431Appendix C: NoticesThis appendix contains the following information: “Notices” on page 431“EU Directive 1999/5/EC Compliance Information” on page 435“Compliance Information (Non-EU)” on page 442“Safety Warnings” on page 443“Translated Safety Warnings” on page 444“Software License and Product Warranty Agreement” on page 445“Hardware Warranty Agreement” on page 451NoticesWi-Fi Alliance Certificationwww.wi-fi.orgFCC NoticeThis device complies with Part 15 of the FCC Rules, with operation subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause unwanted operation.This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate RF energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be
Wireless Array432determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following safety measures:Reorient or relocate the receiving antenna.Increase the separation between the equipment and the receiver.Consult the dealer or an experienced wireless technician for help.Use of a shielded twisted pair (STP) cable must be used for all Ethernet connections in order to comply with EMC requirements.High Power RadarsHigh power radars are allocated as primary users (meaning they have priority) in the 5250MHz to 5350MHz and 5650MHz to 5850MHz bands. These radars could cause interference and/or damage to LE-LAN devices.Non-Modification StatementUnauthorized changes or modifications to the device are not permitted. Use only the supplied internal antenna, or external antennas supplied by the manufacturer. Modifications to the device will void the warranty and may violate FCC regulations. Please go to the Xirrus Web site for a list of all approved antennas.Cable Runs for Power over Gigabit Ethernet (PoGE)If using PoGE, the Array must be connected to PoGE networks without routing cabling to the outside plant — this ensures that cabling is not exposed to lightning strikes or possible cross over from high voltage.Battery Warning UL StatementUse only with listed ITE product.!Caution! The Array contains a battery which is not to be replaced by the customer. Danger of Explosion exists if the battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer's instructions.
Wireless Array433Power CordIf you will be using Xirrus equipment with a power cord, you must use a UL-Approved cord (supplied with the unit). Order new power cords from the Xirrus product list — Xirrus supplies only UL-approved power cords. RF Radiation Hazard WarningTo ensure compliance with FCC and Industry Canada RF exposure requirements, this device must be installed in a location where the antennas of the device will have a minimum distance of at least 30 cm (12 inches) from all persons. Using higher gain antennas and types of antennas not certified for use with this product is not allowed. The device shall not be co-located with another transmitter.Installez l'appareil en veillant à conserver une distance d'au moins 30 cm entre les éléments rayonnants et les personnes. Cet avertissement de sécurité est conforme aux limites d'exposition définies par la norme CNR-102 at relative aux fréquences radio.Industry Canada Notice and MarkingThis Class A digital apparatus complies with Canadian ICES-003. Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada. The term “IC:” before the radio certification number only signifies that Industry Canada technical specifications were met.Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication.Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante.
Wireless Array434This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes: (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.High Power RadarsHigh power radars are allocated as primary users (meaning they have priority) in the 5250MHz to 5350MHz and 5650MHz to 5850MHz bands. These radars could cause interference and/or damage to LELAN devices used in Canada.Les utilisateurs de radars de haute puissance sont désignés utilisateurs principaux (c.-à-d., qu’ils ont la priorité) pour les bandes 5 250 - 5 350 MHz et 5 650 - 5 850 MHz. Ces radars pourraient causer du brouillage et/ou des dommages aux dispositifs LAN-EL.
Wireless Array435EU Directive 1999/5/EC Compliance InformationThis section contains compliance information for the Xirrus Wireless Array family of products. The compliance information contained in this section is relevant to the European Union and other countries that have implemented the EU Directive 1999/5/EC.Declaration of ConformityCesky [Czech] Toto zahzeni je v souladu se základnimi požadavky a ostatnimi odpovidajcimi ustano veni mi Směrnice 1999/5/EC.Dansk [Danish] Dette udstyr er i overensstemmelse med de væsentlige krav og andre relevante bestemmelser i Direktiv 1999/5/EF.Deutsch [German] Dieses Gerat entspricht den grundlegenden Anforderungen und den weiteren entsprechenden Vorgaben der Richtinie 1999/5/EU.Eesti [Estonian] See seande vastab direktiivi 1999/5/EU olulistele nöuetele ja teistele as jakohastele sätetele.English This equipment is in compliance with the essential requirements and other relevant provisions of Directive 1999/5/EC.Español [Spain] Este equipo cump le con los requisitos esenciales asi como con otras disposiciones de la Directiva 1999/5/CE.Ελληνυκη [Greek] Αυτόζ ο εξοπλτσμόζ είναι σε συμμόρφωση με τιζ ουσιώδειζ απαιτήσειζ και ύλλεζ σχετικέζ διατάξειζ τηζ Οδηγιαζ 1999/5/EC.Français [French] Cet appareil est conforme aux exigences essentielles et aux autres dispositions pertinentes de la Directive 1999/5/EC.
Wireless Array436ĺslenska [Icelandic] Þetta tæki er samkvæmt grunnkröfum og öðrum viðeigandi ákvæðum Tilskipunar 1999/5/EC.Italiano [Italian] Questo apparato é conforme ai requisiti essenziali ed agli altri principi sanciti dalla Direttiva 1999/5/CE.Latviski [Latvian] Šī iekārta atbilst Direktīvas 1999/5/EK būtiskajāprasībām un citiem ar to saistītajiem noteikumiem.Lietuvių [Lithuanian] Šis įrenginys tenkina 1995/5/EB Direktyvos esminius reikalavimus ir kitas šios direktyvos nuostatas.Nederlands [Dutch] Dit apparant voldoet aan de essentiele eisen en andere van toepassing zijnde bepalingen van de Richtlijn 1995/5/EC.Malti [Maltese] Dan l-apparant huwa konformi mal-htigiet essenzjali u l-provedimenti l-ohra rilevanti tad-Direttiva 1999/5/EC.Margyar [Hungarian] Ez a készülék teljesiti az alapvetö követelményeket és más 1999/5/EK irányelvben meghatározott vonatkozó rendelkezéseket.Norsk [Norwegian] Dette utstyret er i samsvar med de grunnleggende krav og andre relevante bestemmelser i EU-direktiv 1999/5/EF.Polski [Polish] Urządzenie jest zgodne z ogólnymi wymaganiami oraz sczególnymi mi warunkami określony mi Dyrektywą. UE:1999/5/EC.Portuguès [Portuguese] Este equipamento está em conformidade com os requisitos essenciais e outras provisões relevantes da Directiva 1999/5/EC.Slovensko [Slovenian] Ta naprava je skladna z bistvenimi zahtevami in ostalimi relevantnimi popoji Direktive 1999/5/EC.
Wireless Array437Assessment CriteriaThe following standards were applied during the assessment of the product against the requirements of the Directive 1999/5/EC:Radio: EN 301 893 and EN 300 328 (if applicable)EMC: EN 301 489-1 and EN 301 489-17Safety: EN 50371 to EN 50385 and EN 60601CE MarkingFor the Xirrus Wireless Array, the CE mark and Class-2 identifier opposite are affixed to the equipment and its packaging: Slovensky [Slovak] Toto zariadenie je v zhode so základnými požadavkami a inými prislušnými nariadeniami direktiv: 1999/5/EC.Suomi [Finnish] Tämä laite täyttää direktiivin 1999/5//EY olennaiset vaatimukset ja on siinä asetettujen muiden laitetta koskevien määräysten mukainen.Svenska [Swedish] Denna utrustning är i överensstämmelse med de väsentliga kraven och andra relevanta bestämmelser i Direktiv 1999/5/EC.
Wireless Array438WEEE ComplianceNatural resources were used in the production of this equipment.This equipment may contain hazardous substances that could impact the health of the environment.In order to avoid harm to the environment and consumption of natural resources, we encourage you to use appropriate take-back systems when disposing of this equipment.The appropriate take-back systems will reuse or recycle most of the materials of this equipment in a way that will not harm the environment.The crossed-out wheeled bin symbol (in accordance with European Standard EN 50419) invites you to use those take-back systems and advises you not to combine the material with refuse destined for a land fill.If you need more information on collection, re-use and recycling systems, please contact your local or regional waste administration.Please contact Xirrus for specific information on the environmental performance of our
Wireless Array439National RestrictionsIn the majority of the EU and other European countries, the 2.4 GHz and 5 GHz bands have been made available for the use of Wireless LANs. The following table provides an overview of the regulatory requirements in general that are applicable for the 2.4 GHz and 5 GHz bands.*Dynamic frequency selection and Transmit Power Control is required in these frequency bands.**France is indoor use only in the upper end of the band.The requirements for any country may change at any time. Xirrus recommends that you check with local authorities for the current status of their national regulations for both 2.4 GHz and 5 GHz wireless LANs.The following countries have additional requirements or restrictions than those listed in the above table:BelgiumThe Belgian Institute for Postal Services and Telecommunications (BIPT) must be notified of any outdoor wireless link having a range exceeding 300 meters. Xirrus recommends checking at www.bipt.be for more details.Draadloze verbindingen voor buitengebruik en met een reikwijdte van meer dan 300 meter dienen aangemeld te worden bij het Belgisch Instituut voor postdiensten en telecommunicatie (BIPT). Zie www.bipt.be voor meer gegevens.Frequency Band (MHz)Max Power Level (EIRP) (mW) Indoor Outdoor 2400–2483.5 100 X X**5250–5350* 200 X N/A5470–5725* 1000 X X
Wireless Array440Les liasons sans fil pour une utilisation en extérieur d’une distance supérieure à 300 mèters doivent être notifiées à l’Institut Belge des services Postaux et des Télécommunications (IBPT). Visitez www.bipt.be pour de plus amples détails.GreeceA license from EETT is required for the outdoor operation in the 5470 MHz to 5725 MHz band. Xirrus recommends checking www.eett.gr for more details.Η δη ιουργβάικτ ωνεξωτερικο ρουστη ζ νησυ νοτ των 5470–5725 ΜΗz ε ιτρ ετάιωνο ετάά όάδειά της ΕΕΤΤ, ου ορηγεβτάι στερά ά ό σ φωνη γν η του ΓΕΕΘΑ. ερισσότερες λε τομ ρειεωστο www.eett.grItalyThis product meets the National Radio Interface and the requirements specified in the National Frequency Allocation Table for Italy. Unless this wireless LAN product is operating within the boundaries of the owner’s property, its use requires a “general authorization.” Please check with www.communicazioni.it/it/ for more details.Questo prodotto é conforme alla specifiche di Interfaccia Radio Nazionali e rispetta il Piano Nazionale di ripartizione delle frequenze in Italia. Se non viene installato all’interno del proprio fondo, l’utilizzo di prodotti wireless LAN richiede una “autorizzazione Generale.” Consultare www.communicazioni.it/it/ per maggiori dettagli.Norway, Switzerland and LiechtensteinAlthough Norway, Switzerland and Liechtenstein are not EU member states, the EU Directive 1999/5/EC has also been implemented in those countries.Calculating the Maximum Output Power The regulatory limits for maximum output power are specified in EIRP (radiated power). The EIRP level of a device can be calculated by adding the gain of the antenna used (specified in dBi) to the output power available at the connector (specified in dBm).
Wireless Array441AntennasThe Xirrus Wireless Array employs integrated antennas that cannot be removed and which are not user accessible. Nevertheless, as regulatory limits are not the same throughout the EU, users may need to adjust the conducted power setting for the radio to meet the EIRP limits applicable in their country or region. Adjustments can be made from the product’s management interface — either Web Management Interface (WMI) or Command Line Interface (CLI).Operating FrequencyThe operating frequency in a wireless LAN is determined by the access point. As such, it is important that the access point is correctly configured to meet the local regulations. See National Restrictions in this section for more information.If you still have questions regarding the compliance of Xirrus products or you cannot find the information you are looking for, please contact us at:Xirrus, Inc.2101 Corporate Center DriveThousand Oaks, CA 91320USATel: 1.805.262.16001.800.947.7871 Toll Free in the USFax: 1.866.462.3980www.xirrus.com
Wireless Array442Compliance Information (Non-EU)This section contains compliance information for the Xirrus Wireless Array family of products. The compliance information contained in this section is relevant to the listed countries (outside of the European Union and other countries that have implemented the EU Directive 1999/5/EC). Declaration of ConformityMexico XN16: Cofetel Cert #: RCPXIXN10-1052 XN12: Cofetel Cert #: RCPXIXN10-1052-A1 XN8: Cofetel Cert #: RCPXIXN10-1052-A2XN4: Cofetel Cert #: RCPXIXN10-1052-A3Thailand This telecommunication equipment conforms to NTC technical requirement.
Wireless Array443Safety WarningsTranslated safety warnings appear on the following page. !Safety WarningsRead all user documentation before powering this device. All Xirrus interconnected equipment should be contained indoors. This product is not suitable for outdoor operation. Please verify the integrity of the system ground prior to installing Xirrus equipment. Additionally, verify that the ambient operating temperature does not exceed 50°C.!Explosive Device Proximity WarningDo not operate the XR Series Wireless Array near unshielded blasting caps or in an explosive environment unless the device has been modified to be especially qualified for such use.!Lightning Activity WarningDo not work on the XR Series Wireless Array or connect or disconnect cables during periods of lightning activity.!Circuit Breaker WarningThe XR Series Wireless Array relies on the building’s installation for over current protection. Ensure that a fuse or circuit breaker no larger than 120 VAC, 15A (U.S.) or 240 VAC, 10A (International) is used on all current-carrying conductors.
Wireless Array444Translated Safety WarningsAvertissements de Sécurité!SécuritéLisez l'ensemble de la documentation utilisateur avant de mettre cet appareil sous tension. Tous les équipements Xirrus interconnectés doivent être installés en intérieur. Ce produit n'est pas conçu pour être utilisé en extérieur. Veuillez vérifier l'intégrité de la terre du système avant d'installer des équipements Xirrus. Vérifiez également que la température de fonctionnement ambiante n'excède pas 50°C.!Proximité d'appareils explosifsN'utilisez pas l'unité XR Wireless Array à proximité d'amorces non blindées ou dans un environnement explosif, à moins que l'appareil n'ait été spécifiquement modifié pour un tel usage.!FoudreN'utilisez pas l'unité XR Wireless Array et ne branchez pas ou ne débranchez pas de câbles en cas de foudre.!DisjoncteurL'unité XR Wireless Array dépend de l'installation du bâtiment pour ce qui est de la protection contre les surintensités. Assurez-vous qu'un fusible ou qu'un disjoncteur de 120 Vca, 15 A (États-Unis) ou de 240 Vca, 10 A (International) maximum est utilisé sur tous les conducteurs de courant.
Wireless Array445Software License and Product Warranty AgreementTHIS SOFTWARE LICENSE AGREEMENT (THE “AGREEMENT”) IS A LEGAL AGREEMENT BETWEEN YOU (“CUSTOMER”) AND LICENSOR (AS DEFINED BELOW) AND GOVERNS THE USE OF THE SOFTWARE INSTALLED ON THE PRODUCT (AS DEFINED BELOW). IF YOU ARE AN EMPLOYEE OR AGENT OF CUSTOMER, YOU HEREBY REPRESENT AND WARRANT TO LICENSOR THAT YOU HAVE THE POWER AND AUTHORITY TO ACCEPT AND TO BIND CUSTOMER TO THE TERMS AND CONDITIONS OF THIS AGREEMENT (INCLUDING ANY THIRD PARTY TERMS SET FORTH HEREIN). IF YOU DO NOT AGREE TO ALL OF THE TERMS OF THIS AGREEMENT RETURN THE PRODUCT AND ALL ACCOMPANYING MATERIALS (INCLUDING ALL DOCUMENTATION) TO THE RELEVANT VENDOR FOR A FULL REFUND OF THE PURCHASE PRICE THEREFORE. CUSTOMER UNDERSTANDS AND AGREES THAT USE OF THE PRODUCT AND SOFTWARE SHALL BE DEEMED AN AGREEMENT TO THE TERMS AND CONDITIONS GOVERNING SUCH SOFTWARE AND THAT CUSTOMER IS BOUND BY AND BECOMES A PARTY TO THIS AGREEMENT. 1.0 DEFINITIONS 1.1 “Documentation” means the user manuals and all other all documentation, instructions or other similar materials accompanying the Software covering the installation, application, and use thereof. 1.2 “Licensor” means XIRRUS and its suppliers. 1.3 “Product” means a multi-radio access point containing four or more distinct radios capable of simultaneous operation on four or more non-overlapping channels. 1.4 “Software” means, collectively, each of the application and embedded software programs delivered to Customer in connection with this Agreement. For purposes of this Agreement, the term Software shall be deemed to include any and all Documentation and Updates provided with or for the Software. 1.5 “Updates” means any bug-fix, maintenance or version release to the Software that may be provided to Customer from Licensor pursuant to this Agreement or pursuant to any separate maintenance and support agreement entered into by and between Licensor and Customer. 2.0 GRANT OF RIGHTS 2.1 Software. Subject to the terms and conditions of this Agreement, Licensor hereby grants to Customer a perpetual, non-exclusive, non-sublicenseable, non-transferable right and license to use the Software solely as installed on
Wireless Array446the Product in accordance with the accompanying Documentation and for no other purpose. 2.2 Ownership. The license granted under Sections 2.1 above with respect to the Software does not constitute a transfer or sale of Licensor's or its suppliers' ownership interest in or to the Software, which is solely licensed to Customer. The Software is protected by both national and international intellectual property laws and treaties. Except for the express licenses granted to the Software, Licensor and its suppliers retain all rights, title and interest in and to the Software, including (i) any and all trade secrets, copyrights, patents and other proprietary rights therein or thereto or (ii) any Marks (as defined in Section 2.3 below) used in connection therewith. In no event shall Customer remove, efface or otherwise obscure any Marks contained on or in the Software. All rights not expressly granted herein are reserved by Licensor. 2.3 Copies. Customer shall not make any copies of the Software but shall be permitted to make a reasonable number of copies of the related Documentation. Whenever Customer copies or reproduces all or any part of the Documentation, Customer shall reproduce all and not efface any titles, trademark symbols, copyright symbols and legends, and other proprietary markings or similar indicia of origin (“Marks”) on or in the Documentation. 2.4 Restrictions. Customer shall not itself, or through any parent, subsidiary, affiliate, agent or other third party (i) sell, rent, lease, license or sublicense, assign or otherwise transfer the Software, or any of Customer's rights and obligations under this Agreement except as expressly permitted herein; (ii) decompile, disassemble, or reverse engineer the Software, in whole or in part, provided that in those jurisdictions in which a total prohibition on any reverse engineering is prohibited as a matter of law and such prohibition is not cured by the fact that this Agreement is subject to the laws of the State of California, Licensor agrees to grant Customer, upon Customer's written request to Licensor, a limited reverse engineering license to permit interoperability of the Software with other software or code used by Customer; (iii) allow access to the Software by any user other than by Customer's employees and contractors who are bound in writing to confidentiality and non-use restrictions at least as protective as those set forth herein; (iv) except as expressly set forth herein, write or develop any derivative software or any other software program based upon the Software; (v) use any computer software or hardware which is designated to defeat any copy protection or other use limiting device, including any device intended to limit the number of users or devices accessing the Product; (vi) disclose information about the performance or operation of the Product or Software to any third party without the prior written consent of Licensor; or (vii) engage a third party to perform benchmark or functionality testing of the Product or Software.
Wireless Array4473.0 LIMITED WARRANTY AND LIMITATION OF LIABILITY 3.1 Limited Warranty & Exclusions. Licensor warrants that the Software will perform in substantial accordance with the specifications therefore set forth in the Documentation for a period of ninety [90] days after Customer's acceptance of the terms of this Agreement with respect to the Software (“Warranty Period”). If during the Warranty Period the Software or Product does not perform as warranted, Licensor shall, at its option, correct the relevant Product and/or Software giving rise to such breach of performance or replace such Product and/or Software free of charge. THE FOREGOING ARE CUSTOMER'S SOLE AND EXCLUSIVE REMEDIES FOR BREACH OF THE FOREGOING WARRANTY. THE WARRANTY SET FORTH ABOVE IS MADE TO AND FOR THE BENEFIT OF CUSTOMER ONLY. The warranty will apply only if (i) the Software has been used at all times and in accordance with the instructions for use set forth in the Documentation and this Agreement; (ii) no modification, alteration or addition has been made to the Software by persons other than Licensor or Licensor's authorized representative; and (iii) the Software or Product on which the Software is installed has not been subject to any unusual electrical charge. 3.2 DISCLAIMER. EXCEPT AS EXPRESSLY STATED IN THIS SECTION 3, ALL ADDITIONAL CONDITIONS, REPRESENTATIONS, AND WARRANTIES, WHETHER IMPLIED, STATUTORY OR OTHERWISE, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, SATISFACTORY QUALITY, ACCURACY, AGAINST INFRINGEMENT OR ARISING FROM A COURSE OF DEALING, USAGE, OR TRADE PRACTICE, ARE HEREBY DISCLAIMED BY LICENSOR AND ITS SUPPLIERS. THIS DISCLAIMER SHALL APPLY EVEN IF ANY EXPRESS WARRANTY AND LIMITED REMEDY OFFERED BY LICENSOR FAILS OF ITS ESSENTIAL PURPOSE. ALL WARRANTIES PROVIDED BY LICENSOR ARE SUBJECT TO THE LIMITATIONS OF LIABILITY SET FORTH IN THIS AGREEMENT. 3.3 HAZARDOUS APPLICATIONS. THE SOFTWARE IS NOT DESIGNED OR INTENDED FOR USE IN HAZARDOUS ENVIRONMENTS REQUIRING FAIL SAFE PERFORMANCE, SUCH AS IN THE OPERATION OF A NUCLEAR FACILITY, AIRCRAFT NAVIGATION OR COMMUNICATIONS SYSTEMS, AIR TRAFFIC CONTROLS OR OTHER DEVICES OR SYSTEMS IN WHICH A MALFUNCTION OF THE SOFTWARE WOULD RESULT IN FORSEEABLE RISK OF INJURY OR DEATH TO THE OPERATOR OF THE DEVICE OR SYSTEM OR TO OTHERS (“HAZARDOUS APPLICATIONS”). CUSTOMER ASSUMES ANY AND ALL RISKS, INJURIES, LOSSES, CLAIMS AND ANY OTHER LIABILITIES ARISING OUT OF THE USE OF THE SOFTWARE IN ANY HAZARDOUS APPLICATIONS.
Wireless Array4483.4 Limitation of Liability. (a) TOTAL LIABILITY. NOTWITHSTANDING ANYTHING ELSE HEREIN, ALL LIABILITY OF LICENSOR AND ITS SUPPLIERS UNDER THIS AGREEMENT SHALL BE LIMITED TO THE AMOUNT PAID BY CUSTOMER FOR THE RELEVANT SOFTWARE, OR PORTION THEREOF, THAT GAVE RISE TO SUCH LIABILITY OR ONE HUNDRED UNITED STATES DOLLARS (US$100), WHICHEVER IS GREATER. THE LIABILITY OF LICENSOR AND ITS SUPPLIERS UNDER THIS SECTION SHALL BE CUMULATIVE AND NOT PER INCIDENT. (b) DAMAGES. IN NO EVENT SHALL LICENSOR, ITS SUPPLIERS OR THEIR RELEVANT SUBCONTRACTORS BE LIABLE FOR (A) ANY INCIDENTAL, SPECIAL, PUNITIVE OR CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST OR DAMAGED DATA, OR ANY INDIRECT DAMAGES, WHETHER ARISING IN CONTRACT, TORT (INCLUDING NEGLIGENCE AND STRICT LIABILITY) OR OTHERWISE OR (B) ANY COSTS OR EXPENSES FOR THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES IN EACH CASE, EVEN IF LICENSOR OR ITS SUPPLIERS HAVE BEEN INFORMED OF THE POSSIBILITY OF SUCH DAMAGES. 3.5 Exclusions. SOME JURISDICTIONS DO NOT PERMIT THE LIMITATIONS OF LIABILITY AND LIMITED WARRANTIES SET FORTH UNDER THIS AGREEMENT. IN THE EVENT YOU ARE LOCATED IN ANY SUCH JURISDICTION, THE FOREGOING LIMITATIONS SHALL APPLY ONLY TO THE MAXIMUM EXTENT PERMITTED IN SUCH JURISDICTIONS. IN NO EVENT SHALL THE FOREGOING EXCLUSIONS AND LIMITATIONS ON DAMAGES BE DEEMED TO APPLY TO ANY LIABILITY BASED ON FRAUD, WILLFUL MISCONDUCT, GROSS NEGLIGENCE OR PERSONAL INJURY OR DEATH. 4.0 CONFIDENTIAL INFORMATION 4.1 Generally. The Software (and its accompanying Documentation) constitutes Licensor's and its suppliers' proprietary and confidential information and contains valuable trade secrets of Licensor and its suppliers (“Confidential Information”). Customer shall protect the secrecy of the Confidential Information to the same extent it protects its other valuable, proprietary and confidential information of a similar nature but in no event shall Customer use less than reasonable care to maintain the secrecy of the Confidential Information. Customer shall not use the Confidential Information except to exercise its rights or perform its obligations as set forth under this Agreement. Customer shall not disclose such Confidential Information to any third party other than subject to non-use and non-disclosure obligations at least as
Wireless Array449protective of a party's right in such Confidential Information as those set forth herein. 4.2 Return of Materials. Customer agrees to (i) destroy all Confidential Information (including deleting any and all copies contained on any of Customer's Designated Hardware or the Product) within fifteen (15) days of the date of termination of this Agreement or (ii) if requested by Licensor, return, any Confidential Information to Licensor within thirty (30) days of Licensor's written request. 5.0 TERM AND TERMINATION 5.1 Term. Subject to Section 5.2 below, this Agreement will take effect on the Effective Date and will remain in force until terminated in accordance with this Agreement. 5.2 Termination Events. This Agreement may be terminated immediately upon written notice by either party under any of the following conditions: (a) If the other party has failed to cure a breach of any material term or condition under the Agreement within thirty (30) days after receipt of notice from the other party; or (b) Either party ceases to carry on business as a going concern, either party becomes the object of the institution of voluntary or involuntary proceedings in bankruptcy or liquidation, which proceeding is not dismissed within ninety (90) days, or a receiver is appointed with respect to a substantial part of its assets. 5.3 Effect of Termination. (a) Upon termination of this Agreement, in whole or in part, Customer shall pay Licensor for all amounts owed up to the effective date of termination. Termination of this Agreement shall not constitute a waiver for any amounts due. (b) The following Sections shall survive the termination of this Agreement for any reason: Sections 1, 2.2, 2.4, 3, 4, 5.3, and 6. (c) No later than thirty (30) days after the date of termination of this Agreement by Licensor, Customer shall upon Licensor's instructions either return the Software and all copies thereof; all Documentation relating thereto in its possession that is in tangible form or destroy the same (including any copies thereof contained on Customer's Designated Hardware). Customer shall furnish Licensor with a certificate signed by an executive officer of Customer verifying that the same has been done.
Wireless Array4506. MISCELLANEOUS If Customer is a corporation, partnership or similar entity, then the license to the Software and Documentation that is granted under this Agreement is expressly conditioned upon and Customer represents and warrants to Licensor that the person accepting the terms of this Agreement is authorized to bind such entity to the terms and conditions herein. If any provision of this Agreement is held to be invalid or unenforceable, it will be enforced to the extent permissible and the remainder of this Agreement will remain in full force and effect. During the course of use of the Software, Licensor may collect information on your use thereof; you hereby authorize Licensor to use such information to improve its products and services, and to disclose the same to third parties provided it does not contain any personally identifiable information. The express waiver by either party of any provision, condition or requirement of this Agreement does not constitute a waiver of any future obligation to comply with such provision, condition or requirement. Customer and Licensor are independent parties. Customer may not export or re-export the Software or Documentation (or other materials) without appropriate United States, European Union and foreign government licenses or in violation of the United State's Export Administration Act or foreign equivalents and Customer shall comply with all national and international laws governing the Software. This Agreement will be governed by and construed under the laws of the State of California and the United States as applied to agreements entered into and to be performed entirely within California, without regard to conflicts of laws provisions thereof and the parties expressly exclude the application of the United Nations Convention on Contracts for the International Sales of Goods and the Uniform Computer Information Transactions Act (as promulgated by any State) to this Agreement. Suits or enforcement actions must be brought within, and each party irrevocably commits to the exclusive jurisdiction of, the state and federal courts located in Ventura County, California. Customer may not assign this Agreement by operation of law or otherwise, without the prior written consent of Licensor and any attempted assignment in violation of the foregoing shall be null and void. This Agreement cancels and supersedes all prior agreements between the parties. This Agreement may not be varied except through a document agreed to and signed by both parties. Any printed terms and conditions contained in any Customer purchase order or in any Licensor acknowledgment, invoice or other documentation relating to the Software shall be deemed deleted and of no force or effect and any additional typed and/or written terms and conditions contained shall be for administrative purposes only, i.e. to identify the types and quantities of Software to be supplied, line item prices and total price, delivery schedule, and other similar ordering data, all in accordance with the provisions of this Agreement.
Wireless Array451Hardware Warranty AgreementPLEASE READ THIS AGREEMENT CAREFULLY BEFORE USING THIS PRODUCTBY USING THIS PRODUCT, YOU ACKNOWLEDGE THAT YOU HAVE READ AND UNDERSTOOD ALL THE TERMS AND CONDITIONS OF THIS AGREEMENT AND THAT YOU ARE CONSENTING TO BE BOUND BY THIS AGREEMENT. IF YOU DO NOT AGREE TO ALL OF THE TERMS OF THIS AGREEMENT, RETURN THE UNUSED PRODUCT TO THE PLACE OF PURCHASE FOR A FULL REFUND.LIMITED WARRANTY. Xirrus warrants that for a period of five years from the date of purchase by the original purchaser (“Customer”): (i) the Xirrus Equipment (“Equipment”) will be free of defects in materials and workmanship under normal use; and (ii) the Equipment substantially conforms to its published specifications. Except for the foregoing, the Equipment is provided AS IS. This limited warranty extends only to Customer as the original purchaser. Customer's exclusive remedy and the entire liability of Xirrus and its suppliers under this limited warranty will be, at Xirrus' option, repair, replacement, or refund of the Equipment if reported (or, upon request, returned) to the party supplying the Equipment to Customer. In no event does Xirrus warrant that the Equipment is error free or that Customer will be able to operate the Equipment without problems or interruptions. This warranty does not apply if the Equipment (a) has been altered, except by Xirrus, (b) has not been installed, operated, repaired, or maintained in accordance with instructions supplied by Xirrus, (c) has been subjected to abnormal physical or electrical stress, misuse, negligence, or accident, or (d) is used in ultra-hazardous activities. DISCLAIMER. EXCEPT AS SPECIFIED IN THIS WARRANTY, ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS, AND WARRANTIES INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NONINFRINGEMENT OR ARISING FROM A COURSE OF DEALING, USAGE, OR TRADE PRACTICE, ARE HEREBY EXCLUDED TO THE EXTENT ALLOWED BY APPLICABLE LAW. IN NO EVENT WILL XIRRUS OR ITS SUPPLIERS BE LIABLE FOR ANY LOST REVENUE, PROFIT, OR DATA, OR FOR SPECIAL, INDIRECT, CONSEQUENTIAL, INCIDENTAL, OR PUNITIVE DAMAGES HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY ARISING OUT OF THE USE OF OR INABILITY TO USE THE EQUIPMENT EVEN IF XIRRUS OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. In no event shall Xirrus' or its suppliers' liability to Customer,
Wireless Array452whether in contract, tort (including negligence), or otherwise, exceed the price paid by Customer.The foregoing limitations shall apply even if the above-stated warranty fails of its essential purpose. SOME STATES DO NOT ALLOW LIMITATION OR EXCLUSION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES. The above warranty DOES NOT apply to any evaluation Equipment made available for testing or demonstration purposes. All such Equipment is provided AS IS without any warranty whatsoever. Customer agrees the Equipment and related documentation shall not be used in life support systems, human implantation, nuclear facilities or systems or any other application where failure could lead to a loss of life or catastrophic property damage, or cause or permit any third party to do any of the foregoing. All information or feedback provided by Customer to Xirrus with respect to the Product shall be Xirrus' property and deemed confidential information of Xirrus.Equipment including technical data, is subject to U.S. export control laws, including the U.S. Export Administration Act and its associated regulations, and may be subject to export or import regulations in other countries. Customer agrees to comply strictly with all such regulations and acknowledges that it has the responsibility to obtain licenses to export, re-export, or import Equipment.This Agreement shall be governed by and construed in accordance with the laws of the State of California, United States of America, as if performed wholly within the state and without giving effect to the principles of conflict of law. If any portion hereof is found to be void or unenforceable, the remaining provisions of this Warranty shall remain in full force and effect. This Warranty constitutes the entire agreement between the parties with respect to the use of the Equipment. Manufacturer is Xirrus, Inc. 2101 Corporate Center Drive Thousand Oaks, CA 91320
Wireless ArrayGlossary of Terms 453Glossary of Terms802.11aA supplement to the IEEE 802.11 WLAN specification that describes radio transmissions at a frequency of 5 GHz and data rates of up to 54 Mbps.802.11bA supplement to the IEEE 802.11 WLAN specification that describes radio transmissions at a frequency of 2.4 GHz and data rates of up to 11 Mbps.802.11dA supplement to the Media Access Control (MAC) layer in 802.11 to promote worldwide use of 802.11 WLANs. It allows Access Points to communicate information on the permissible radio channels with acceptable power levels for user devices. Because the 802.11 standards cannot legally operate in some countries, 802.11d adds features and restrictions to allow WLANs to operate within the rules of these countries.802.11gA supplement to the IEEE 802.11 WLAN specification that describes radio transmissions at a frequency of 2.4 GHz and data rates of up to 54 Mbps.802.11nA supplement to the IEEE 802.11 WLAN specification that describes enhancements to 802.11a/b/g to greatly enhance reach, speed, and capacity.802.1QAn IEEE standard for MAC layer frame tagging (also known as encapsulation). Frame tagging uniquely assigns a user-defined ID to each frame. It also enables a switch to communicate VLAN membership information across multiple (and multi-vendor) devices by frame tagging.AES(Advanced Encryption Standard) A data encryption scheme that uses three different key sizes (128-bit, 192-bit, and 256-bit). AES was adopted by the U.S. government in 2002 as the encryption standard for protecting sensitive but unclassified electronic data.
Wireless Array454 Glossary of TermsauthenticationThe process that a station, device, or user employs to announce its identify to the network which validates it. IEEE 802.11 specifies two forms of authentication, open system and shared key.bandwidthSpecifies the amount of the frequency spectrum that is usable for data transfer. In other words, it identifies the maximum data rate a signal can attain on the medium without encountering significant attenuation (loss of power).beacon intervalWhen a device in a wireless network sends a beacon, it includes with it a beacon interval, which specifies the period of time before it will send the beacon again. The interval tells receiving devices on the network how long they can wait in low power mode before waking up to handle the beacon. Network administrators can adjust the beacon interval — usually measured in milliseconds (ms) or its equivalent, kilo-microseconds (Kmsec).bit rateThe transmission rate of binary symbols ('0' and '1'), equal to the total number of bits transmitted in one second.BSS(Basic Service Set) When a WLAN is operating in infrastructure mode, each access point and its connected devices are called the Basic Service Set.BSSIDThe unique identifier for an access point in a BSS network. See also, SSID.CDP(Cisco Discovery Protocol) CDP is a layer 2 network protocol which runs on most Cisco equipment and some other network equipment. It is used to share information with other directly connected network devices. Information such as the model, network capabilities, and IP address is shared. Wireless Arrays can both advertise their presence by sending CDP announcements, and gather and display information sent by neighbors.
Wireless ArrayGlossary of Terms 455cellThe basic geographical unit of a cellular communications system. Service coverage of a given area is based on an interlocking network of cells, each with a radio base station (transmitter/receiver) at its center. The size of each cell is determined by the terrain and forecasted number of users.channelA specific portion of the radio spectrum — the channels allotted to one of the wireless networking protocols. For example, 802.11b and 802.11g use 14 channels in the 2.4 GHz band, only 3 of which don't overlap (1, 6, and 11). CoS(Class of Service) A category based on the type of user, type of application, or some other criteria that QoS systems can use to provide differentiated classes of service.default gatewayThe gateway in a network that a computer will use to access another network if a gateway is not specified for use. In a network using subnets, a default gateway is the router that forwards traffic to a destination outside of the subnet of the transmitting device.DHCP(Dynamic Host Configuration Protocol) A method for dynamically assigning IP addresses to devices on a network. DHCP issues IP addresses automatically within a specified range to client devices when they are first powered up.DHCP leaseThe DHCP lease is the amount of time that the DHCP server grants to the DHCP client for permission to use a particular IP address. A typical DHCP server allows its administrator to set the lease time.DNS(Domain Name System) A system that maps meaningful domain names with complex numeric IP addresses. DNS is actually a separate network — if one DNS server cannot translate a domain name, it will ask a second or third until a server is found with the correct IP address.
Wireless Array456 Glossary of TermsdomainThe main name/Internet address of a user's Internet site as registered with the InterNIC organization, which handles domain registration on the Internet. For example, the “domain” address for Xirrus is: http://www.xirrus.com, broken down as follows:http:// represents the Hyper Text Teleprocessing Protocol used by all Web pages.www is a reference to the World Wide Web.xirrus refers to the company.com specifies that the domain belongs to a commercial enterprise.DTIM(Delivery Traffic Indication Message) A DTIM is a signal sent as part of a beacon by an access point to a client device in sleep mode, alerting the device to a packet awaiting delivery.EAP(Extensible Authentication Protocol) When you log on to the Internet, you're most likely establishing a PPP connection via a remote access server. The password, key, or other device you use to prove that you are authorized to do so is controlled via PPP’s Link Control Protocol (LCP). However, LCP is somewhat inflexible because it has to specify an authentication device early in the process. EAP allows the system to gather more information from the user before deciding which authenticator to use. It is called extensible because it allows more authenticator types than LCP (for example, passwords and public keys).EDCF(Enhanced Distributed Coordinator Function) A QoS extension which uses the same contention-based access mechanism as current devices but adds “offset contention windows” that separate high priority packets from low priority packets (by assigning a larger random backoff window to lower priorities than to higher priorities). The result is “statistical priority,” where high-priority packets usually are transmitted before low-priority packets.encapsulationA way of wrapping protocols such as TCP/IP, AppleTalk, and NetBEUI in Ethernet frames so they can traverse an Ethernet network and be unwrapped when they reach the destination computer.
Wireless ArrayGlossary of Terms 457encryptionAny procedure used in cryptography to translate data into a form that can be decrypted and read only by its intended receiver.Fast EthernetA version of standard Ethernet that runs at 100 Mbps rather than 10 Mbps.FCC(Federal Communications Commission) US wireless regulatory authority. The FCC was established by the Communications Act of 1934 and is charged with regulating Interstate and International communications by radio, television, wire, satellite and cable.FIPSThe Federal Information Processing Standard (FIPS) Publication 140-2 establishes a computer security standard used to accredit cryptographic modules. The standard is a joint effort by the U.S. and Canadian governments. frameA packet encapsulated to travel on a physical medium, like Ethernet or Wi-Fi. If a packet is like a shipping container, a frame is the boat on which the shipping container is loaded. Gigabit 1 through 4The Gigabit Ethernet interfaces on XR Series Arrays. XR-4000 Series Arrays have two gigabit interfaces, while XR-6000 Series and higher models have four gigabit interfaces. See also, Gigabit Ethernet.Gigabit EthernetA version of Ethernet with data transfer rates of 1 Gigabit (1,000 Mbps).GroupA user group, created to define a set of attributes (such as VLAN, traffic limits, and Web Page Redirect) and privileges (such as fast roaming) that apply to all users that are members of the group. This allows a uniform configuration to be easily applied to multiple user accounts. The attributes that can be configured for user groups are almost identical to those that can be configured for SSIDs.
Wireless Array458 Glossary of Termshost nameThe unique name that identifies a computer on a network. On the Internet, the host name is in the form comp.xyz.net. If there is only one Internet site the host name is the same as the domain name. One computer can have more than one host name if it hosts more than one Internet site (for example, home.xyz.netand comp.xyz.net). In this case, comp and home are the host names and xyz.net is the domain name.IPsecA Layer 3 authentication and encryption protocol. Used to secure VPNs.MAC address(Media Access Control Address) A 6-byte hexadecimal address assigned by a manufacturer to a device.Mbps(Megabits per second) A standard measure for data transmission speeds (for example, the rate at which information travels over the Internet). 1 Mbps denotes one million bits per second.MTU(Maximum Transmission Unit) The largest physical packet size — measured in bytes — that a network can transmit. Any messages larger than the MTU are divided into smaller packets before being sent. Every network has a different MTU, which is set by the network administrator. Ideally, you want the MTU to be the same as the smallest MTU of all the networks between your machine and a message's final destination. Otherwise, if your messages are larger than one of the intervening MTUs, they will get broken up (fragmented), which slows down transmission speeds.NTP(Network Time Protocol) An Internet standard protocol (built on top of TCP/IP) that ensures the accurate synchronization (to the millisecond) of computer clock times in a network of computers. Running as a continuous background client program on a computer, NTP sends periodic time requests to servers, obtaining server time stamps and using them to adjust the client's clock.
Wireless ArrayGlossary of Terms 459packetData sent over a network is broken down into many small pieces — packets — by the Transmission Control Protocol layer of TCP/IP. Each packet contains the address of its destination as well the data. Packets may be sent on any number of routes to their destination, where they are reassembled into the original data. This system is optimal for connectionless networks, such as the Internet, where there are no fixed connections between two locations.PLCP(Physical Layer Convergence Protocol) Defined by IEEE 802.6, a protocol specified within the Transmission Convergence layer that defines exactly how cells are formatted within a data stream for a particular type of transmission facility.PoGE This refers to the optional Xirrus XP1 Power over Gigabit Ethernet modules that provide DC power to Arrays. Power is supplied over the same Cat 5e or Cat 6 cable that supplies the data connection to your gigabit Ethernet switch, thus eliminating the need to run a power cable. preamblePreamble (sometimes called a header) is a section of data at the head of a packetthat contains information that the access point and client devices need when sending and receiving packets. PLCP Has two structures, a long and a short preamble. All compliant 802.11b systems have to support the long preamble. The short preamble option is provided in the standard to improve the efficiency of a network's throughput when transmitting special data, such as voice, VoIP (Voice-over IP) and streaming video.private keyIn cryptography, one of a pair of keys (one public and one private) that are created with the same algorithm for encrypting and decrypting messages and digital signatures. The private key is provided only to the requestor and never shared. The requestor uses the private key to decrypt text that has been encrypted with the public key by someone else.PSK(Pre-Shared Key) A TKIP passphrase used to protect your network traffic in WPA.
Wireless Array460 Glossary of Termspublic keyIn cryptography, one of a pair of keys (one public and one private) that are created with the same algorithm for encrypting and decrypting messages and digital signatures. The public key is made publicly available for encryption and decryption.QoS(Quality of Service) QoS can be used to describe any number of ways in which a network provider prioritizes or guarantees a service's performance.RADIUS(Remote Authentication Dial-In User Service) A client-server security protocol, developed to authenticate, authorize, and account for dial-up users. The RADIUS server stores user profiles, which include passwords and authorization attributes.RSSI(Received Signal Strength Indicator) A measure of the energy observed by an antenna when receiving a signal.SDMA(Spatial Division Multiple Access) A wireless communications mode that optimizes the use of the radio spectrum and minimizes cost by taking advantage of the directional properties of antennas. The antennas are highly directional, allowing duplicate frequencies to be used for multiple zones.SNMP(Simple Network Management Protocol) A standard protocol that regulates network management over the Internet.SNTP(Simple Network Time Protocol) A simplified version of NTP. SNTP can be used when the ultimate performance of the full NTP implementation described in RFC 1305 is not needed or justified.
Wireless ArrayGlossary of Terms 461SSH(Secure SHell) Developed by SSH Communications Security, Secure Shell is a program to log into another computer over a network, to execute commands in a remote machine, and to move files from one machine to another. The Array only allows SSH-2 connections. SSH-2 provides strong authentication and secure communications over insecure channels. SSH-2 protects a network from attacks, such as IP spoofing, IP source routing, and DNS spoofing. Attackers who has managed to take over a network can only force SSH to disconnect — they cannot “play back” the traffic or hijack the connection when encryption is enabled. When using SSH-2's slogin (instead of rlogin) the entire login session, including transmission of password, is encrypted making it almost impossible for an outsider to collect passwords. Be aware that your SSH utility must be set up to use SSH-2. SSID(Service Set IDentifier) Every wireless network or network subset (such as a BSS) has a unique identifier called an SSID. Every device connected to that part of the network uses the same SSID to identify itself as part of the family — when it wants to gain access to the network or verify the origin of a data packet it is sending over the network. In short, it is the unique name shared among all devices in a WLAN.subnet maskA mask used to determine what subnet an IP address belongs to. An IP address has two components: (1) the network address and (2) the host address. For example, consider the IP address 150.215.017.009. Assuming this is part of a Class B network, the first two numbers (150.215) represent the Class B network address, and the second two numbers (017.009) identify a particular host on this network.TKIP(Temporal Key Integrity Protocol) Provides improved data encryption by scrambling the keys using a hashing algorithm and, by adding an integrity-checking feature, ensures that the encryption keys haven’t been tampered with.transmit powerThe amount of power used by a radio transceiver to send the signal out. Transmit power is generally measured in milliwatts, which you can convert to dBm.User groupSee Group.
Wireless Array462 Glossary of TermsVLAN(Virtual LAN) A group of devices that communicate as a single network, even though they are physically located on different LAN segments. Because VLANs are based on logical rather than physical connections, they are extremely flexible. A device that is moved to another location can remain on the same VLAN without any hardware reconfiguration.VLAN tagging(Virtual LAN tagging) Static port-based VLANs were originally the only way to segment a network without using routing, but these port-based VLANs could only be implemented on a single switch (or switches) cabled together. Routing was required to transfer traffic between unconnected switches. As an alternative to routing, some vendors created proprietary schemes for sharing VLAN information across switches. These methods would only operate on that vendor's equipment and were not an acceptable way to implement VLANs. With the adoption of the 802.11n standard, traffic can be confined to VLANs that exist on multiple switches from different vendors. This interoperability and traffic containment across different switches is the result of a switch's ability to use and recognize 802.1Q tag headers — called VLAN tagging. Switches that implement 802.1Q tagging add this tag header to the frame directly after the destination and source MAC addresses. The tag header indicates:1. That the packet has a tag.2. Whether the packet should have priority over other packets.3. Which VLAN it belongs to, so that the switch can forward or filter it correctly.WDS (Wireless Distribution System)WDS creates wireless backhauls between arrays. These links between arrays may be used rather than having to install data cabling to each array. WEP(Wired Equivalent Privacy) An optional IEEE 802.11 function that offers frame transmission privacy similar to a wired network. The Wired Equivalent Privacy generates secret shared encryption keys that both source and destination stations can use to alter frame bits to avoid disclosure to eavesdroppers.
Wireless ArrayGlossary of Terms 463Wi-Fi AllianceA nonprofit international association formed in 1999 to certify interoperability of wireless Local Area Network products based on IEEE 802.11 specification. The goal of the Wi-Fi Alliance's members is to enhance the user experience through product interoperability.Wireless ArrayA high capacity wireless networking device consisting of multiple radios arranged in a circular array.WPA(Wi-Fi Protected Access) A Wi-Fi Alliance standard that contains a subset of the IEEE 802.11i standard, using TKIP as an encryption method and 802.1x for authentication.WPA2 (Wi-Fi Protected Access 2) WPA2 is the follow-on security method to WPA for wireless networks and provides stronger data protection and network access control. It offers Enterprise and consumer Wi-Fi users with a high level of assurance that only authorized users can access their wireless networks. Like WPA, WPA2 is designed to secure all versions of 802.11 devices, including 802.11a, 802.11b, 802.11g, and 802.11n, multi-band and multi-mode.Xirrus Management System (XMS)A Xirrus product used for managing large Wireless Array deployments from a centralized Web-based interface.XP1 and XP8 — Power over Gigabit Ethernet modulesSee PoGE.XPS — Xirrus Power System A family of optional Xirrus products that provides power over Gigabit Ethernet. See PoGE.
Wireless Array464 Glossary of Terms
Wireless ArrayIndex 465IndexNumerics802.11a 3, 5, 256, 270802.11a/b/g 24802.11a/b/g/n 12802.11a/n 12, 62, 231802.11b 3, 5, 274802.11b/g 256, 274802.11b/g/n 12, 62, 231802.11e 14802.11g 3, 5, 274802.11i 5, 69, 149802.11n 5WMI page 279802.11p 14802.11q 14802.1x 5, 45, 55, 69, 149, 414Aabg(n)nomenclature 3abg(n)2intrusion detection 294self-monitoringradio assurance (loopback mode) 283, 284AC power 58Access Control List 190Access Control Lists 414access control lists (ACLs) 209, 244ACLs 45, 190, 414active IAPsper SSID 243Address Resolution Protocolwindow 103Address Resolution Protocol (ARP)267Admin 414Admin ID 196admin IDauthentication via RADIUS 200Admin Management 196admin privilegessetting in admin RADIUS account200admin RADIUS accountif using Console port 200admin RADIUS authentication 200administration 69, 149, 190Administrator Account 408Advanced Encryption Standard 45, 414Advanced RF Analysis Managersee RAM 16Advanced RF Performance Managersee RPM 14Advanced RF Security Managersee RSM 15AeroScoutsee WiFi tag 175AES 5, 13, 45, 55, 69, 149, 406, 414allow trafficsee filters 308Analysis Managersee RAM 16appearanceWMI options 333WMI, changing 333approvedsetting rogues 113APs 55, 112, 222, 414rogues, blocking 294APs, roguesee rogue APs 282, 294ARP filtering 267ARP table window 103Array 26, 61, 62, 80, 149, 157
Wireless Array466 Indexconnecting 61dismounting 61management 319mounting 61powering up 62securing 61Web Management Interface 80ArrayOSupgrade 322Arraysmanaging in clusters 314associated users 26assurancenetwork server connectivity 106, 207assurance (radio loopback testing) 282assurance, stationsee station assurance 288attack (DoS)see DoS attack 295attack (impersonation)see impersonation attack 296authentication 13of admin via RADIUS 200authoritycertificate 194, 207auto blockrogue APs, settings 294auto negotiate 157auto-blockingrogue APs 294auto-configuration 69, 261, 270, 274channel and cell size 282automatic refreshsetting interval 335automatic update from remote serverconfiguration files, boot image 323Bbackhaulsee WDS 52backup unitsee standby mode 282band association 231beacon interval 261Beacon World Mode 261beam distribution 12benefits 12blockrogue APs, settings 291block (rogue APs)see auto block 294blockingrogue APs 294blocking rogue APs 282boot 322broadcast 267fast roaming 268browsercertificate error 194, 207BSS 412BSSID 112, 412buttons 85Ccapacityof 802.11n 41cascading style sheetsample for web page redirect 329cdp 352CDP (Cisco Discovery Protocol)settings 168cdp CLI command 352CDP neighbors 105cellsharp cell 282cell size 26, 256auto-configuration 282cell size configuration 282certificate
Wireless ArrayIndex 467about 194, 207authority 194, 207error 194, 207install Xirrus authority 207X.509 194, 207channelauto-configuration 282configuration 282list selection 282channels 26, 112, 256, 261, 270, 274non-overlapping 13CHAP (Challenge-Handshake Au-thentication Protocol)Admin RADIUS settings 201web page redirect 240CHAP Challenge Handshake Authen-tication Protocol)RADIUS ping 330character restrictions 88Cisco Discovery Protocolsee cdp 352Cisco Discovery Protocol (CDP) 168CLI 5, 55, 58, 65, 337executing from WMI 332using to upgrade software image424CLI commandssee commands 352clientweb page redirect 328clusterCLI command 354clusters 314defining 315management 316operating in cluster mode 317commandwifi-tag 385Command Line Interface 5, 51, 58, 62, 65, 337, 414configuration commands 350getting help 339getting started 339inputting commands 339sample configuration tasks 386SSH 337top level commands 341command, utilitiesping, traceroute, RADIUS ping 329commandsacl 350admin 351cdp 352clear 353cluster 354configure 342contact-info 355date-time 356dhcp-server 357dns 358file 359filter 362group 354, 366hostname 366interface 367load 367location 368management 368more 370netflow 371no 372quit 374radius-server 374reboot 375, 383reset 375restore 376run-tests 377security 379show 345snmp 380
Wireless Array468 Indexssid 381statistics 348syslog 382vlan 384Community String 405configuration 147, 414express setup 149reset to factory defaults 326configuration changesapplying 87configuration filesautomatic update from remote server 323download 324update from local file 324update from remote file 324connectiontracking window 104connectivityservers, see network assurance106, 207Console portlogin via 200Contact Information 429contact information 429coverage 26, 58extended 12coverage patterns 5critical messages 83CTS/RTS 270, 274Ddata rate 270, 274data ratesincreased by 802.11n 40date/time restrictionsand interactions 250DC power 44, 58default gateway 69, 157default settings 403Default Value 406DHCP 405defaultsreset configuration to factory de-faults 326Delivery Traffic Indication Message261denial of servicesee DoS attack 295deny trafficsee filters 308deployment 24, 33, 51, 55, 58, 414ease of 13examples 33scenarios 33detectionintrusion 294see DoS attack 295see impersonation attack 296see impersonation detection 295see intrusion detection 295, 296DHCP 26, 65, 69, 149, 157, 404default settings 405leases window 104DHCP Server 170diagnosticslog, create file 326displayWMI options 333DNS 69, 149, 167DNS domain 167DNS server 167Domain Name System 167DoS attack detectionsettings 295DTIM 261DTIM period 261duplex 157dynamic VLANoverridden by group 249
Wireless ArrayIndex 469EEAP 406, 414EAP-MDS 13EAP-PEAP 414EAP-TLS 13, 45, 414EAP-TTLS 13, 45, 414EDCF 261Encryption 406, 414encryption 13encryption methodrecommended (WPA2 with AES)192setting 193support of multiple methods 192encryption method (encryption mode)Open, WEP, WPA, WPA2, WPA-Both 192encryption standardAES, TKIP, both 192setting 193Enterprise 1, 3, 414WLAN 3Enterprise Class Management 5Enterprise Class Security 5ESS 412ESSID 412Ethernet 58, 61, 62, 65, 69, 149event logIDS (intrusion detection) 143see system log 142event messages 83Express Setup 61, 69, 149express setup 69, 149Extended Service Set 412Extensible Authentication Protocol 414external RADIUS server 802.1x 23Ffactory default settings 403factory defaults 404, 405, 406, 408DHCP 405reset configuration to 324factory.conf 324fail-overstandby mode 282failover 41, 55FAQs 412Fast Ethernet 58, 65, 149, 157, 403fast roaming 13, 100, 268about 255and VLANs 255features 12, 51, 157, 173, 176, 261, 414and license key 323feedback 85filter list 309filter name 311filters 308, 309, 311stateful filtering, disabling 310statistics 140firewall 308and port usage 47stateful filtering, disabling 310fragmentation threshold 270, 274frequently asked questions 412FTP 414FTP server 23GGeneral Hints 411getting startedexpress setup 149Gigabit 58, 65, 69, 149, 157, 403global settings 261, 270, 274glossary of terms 453Groupmanagement 248group 246CLI command 354, 366VLAN overrides dynamic VLAN249
Wireless Array470 Indexgroup limits and interactions 250Group Rekey 406guard intervalshort, for IEEE 802.11n 39GUIsee WMI 333Hhelpbutton, bottom of page 86button, left frame 83Help button 80help button 85host name 69, 80, 149, 167hs.css 329HTTPScertificate, see certificate 207HTTPS portweb page redirect 237, 241, 242HyperTerminal 22, 58IIAP 26, 62, 69, 149, 256, 270, 274, 297active SSIDs 243fast roaming 255Intrusion Detection (IDS/IPS) 291naming 3settings 256IAP LED 62, 297IAP LED settings 297IAPsauto block rogues 294intrusion detection 294IDSsee Intrusion Detection 291IDS event logviewing window 143IEEE 3, 69, 149IEEE 802.11ncapacity, increased 41guard interval, short 39improved MAC throughput 39increased data rates 40MIMO 36multiple data streams 37spatial multiplexing 37WMI page 279IEEE 802.1Q 417imageupgrade software image 322impersonation attack detectionsettings 296implementing Voice over Wi-Fi 24, 185, 226installation 21, 56, 61, 401installing the MCAP-3616 58mounting the unit 61requirements 21workflow 56installation workflow 56interfaces 149Web 79internal login pageweb page redirect 238web page redirect, customize 240internal splash pageweb page redirect 239web page redirect, customize 240Internet Explorer 22intervalautomatic WMI refresh 335intrusion detection 112, 294and auto block settings 294configuration 282setting as approved or known 113intrusion detection (IDS)viewing event log 143Intrusion Detection (IDS/IPS) 291IP Address 26, 69, 80, 87, 112, 149, 157, 167, 176, 179, 319, 404
Wireless ArrayIndex 471IP Subnet Mask 69IPSsee Intrusion Detection 291Kkeyupgrade 323key features 12Keyboard Shortcuts 409keyboard shortcuts 409knownsetting rogues 113Llastboot.conf 324Layer 3fast roaming 255lease 404Lease Time 404leases, DHCPviewing 104LEDs 62sequence 62settings 297license Keyupgrading 323limitsgroup 250interactions 250station 250traffic 250list, access controlsee access control list 209, 244list, MAC accesssee access control list 209list, SSID accesssee access control list 244location information 69, 80, 149logdiagnostics, create file 326log messagescounters 84log, IDS(intrusion detection)viewing window 143log, system (event)viewing window 142logging in 65, 87Login 87loginvia Console port 200login pageweb page redirect 238, 328web page redirect, customize 240logout 336long retry limit 261loopbacksee radio assurance 398loopback testingradio assurance mode 282MMAC 45, 65, 412, 414MAC Access Control Lists 45MAC Access List 209MAC address 209, 412, 414MAC throughputimproved by IEEE 802.11n 39Management 408, 414management 89, 147, 319Array clusters 314of Arrays 319Web Management Interface (WMI)79maximum lease 404Maximum Lease Time 404Megabit 69menu behaviorWMI 335Message Integrity Check 414messages
Wireless Array472 Indexsyslog counters 84MIC 13, 414MIMO (Multiple-In Multiple-Out) 36modecluster operating mode 317monitoringintrusion detection 112see intrusion detection 294mounting 61mounting plate 61mounting the unit 61MTU 157size 157multiple data streams 37NNATtable - see connection tracking 104neighbors, CDP 105Netflow 173netflowCLI command 371Netscape Navigator 21, 22networkinterfaces 156settings 157network assurance 106, 207network connections 58, 87, 414network installation 21, 401network interface ports 65network interfaces 157, 403network statusARP table window 103connectiontracking window 104routing table window 103viewing leases 104Network Time Protocol 69, 149, 171network toolsping, traceroute, RADIUS ping 329nomenclature 3non-overlapping channels 13NTP 69, 149, 171, 404NTP Server 171OOpen (encryption method) 192optimization, VLAN 267optionsWMI 333overview 5Ppage loadingWMI 335PAP (Password Authentication Proto-col)Admin RADIUS settings 201RADIUS ping 330web page redirect 240passphrase 45, 69, 149Password 408, 414password 87PEAP 13, 304performance 12Performance Managersee RPM 14Ping 319ping 329planning 41, 44, 45, 51failover 41network management 51port failover 41power 44security 45switch failover 41WDS 52PoGE 21see Power over Gigabit Ethernet 10PoGE Power Injectors 1
Wireless ArrayIndex 473port failover 41port requirements 47power outlet 21Power over Gigabit Ethernet 2, 21, 44, 58Power over Gigabit Ethernet (PoGE) 10power planning 44pre-shared key 45, 55, 414Print button 80print button 85probesee Netflow 173product installation 21, 401product overview 5product specifications 20PSK 55, 406PuTTY 21, 51, 69, 149, 414PuTTy 22QQoS 14, 231, 406, 412, 460conflicting values 229levels defined 232, 249priority 231SSID 226, 232about setting QoS 413, 414default QoS 406user group 249qualityof user experience 288Quality of Service 14see QoS 232, 249quick reference guide 403quick startexpress setup 149Rradioassurance (self-test) 283, 284radio assurance (loopback testing) 282radio assurance (loopback) mode 283, 284radio distribution 12radiosnaming 3RADIUS 5, 21, 45, 55, 190, 209, 244, 404, 414admin authentication 200setting admin privileges 200setting user VSAs 216Vendor Specific Attributes (VSAs)423RADIUS pingCHAP Challenge Handshake Au-thentication Protocol) 330PAP (Password Authentication Protocol) 330RADIUS Ping command 330RADIUS Server 404RADIUS server 23RADIUS settingsweb page redirect 240RAM (RF Analysis Manager) 16reauthentication 261reboot 322redirect (WPR) 328refresh intervalWMI 335remote boot imageautomatic update from remote TFTP server 323remote configurationautomatic update from remote server 323remote TFTP serverautomatic update of boot image, configuration 323Reset 319, 404reset configurationto factory defaults 326
Wireless Array474 Indexrestore command 376restrictionsdate/time 250stations 250traffic 250RFintrusion detection 282spectrum management 282RF Analysis Managersee RAM 16RF configuration 282RF managementsee channel 282RF Performance Managersee RPM 14RF resilience 282RF Security Managersee RSM 15roaming 13, 100, 268see fast roaming 255Rogue AP 5, 51, 112, 222, 414rogue APblocking 294settings for blocking 291Rogue AP List 112rogue APsauto block settings 294blocking 282Rogue Control List 222rogue detection 12roguessetting as known or approved 113root command prompt 341routetrace route utility 329routing table window 103RPM (RF Performance Manager) 14RSM (RF Security Manager) 15RSSI 112RTS 270, 274RTS threshold 270, 274Ssample Perl and CSS files for 328savewith reboot 322Save button 80saved.conf 324scalability 3scheduleauto channel configuration 282Secondary Port 404Secondary Server 404secret 404Secure Shell 22secure Shell 21security 5, 13, 190, 412, 414certificate, see certificate 207Security Managersee RSM 15see group 246self-monitoring 294radio assurance 398radio assurance options 283, 284self-testradio assurance mode 283, 284serial port 22, 65, 414server, VTunsee VTun 189serversconnectivity, see network assur-ance 106, 207Service Set Identifier 69Services 170, 412servicing the unit 401settings 149setup, express 149sharp cell 282setting in WMI 286short retry limit 261
Wireless ArrayIndex 475signal processingMIMO 36skinchanging WMI appearance 333SNMP 5, 10, 69, 149, 157, 170, 179, 405required for XMS 179, 180softwareupgrade license key 323software imageupgrading via CLI 424Software Upgrade 319software upgrade 322spatial multiplexing 37specifications 20spectrum (RF) management 282speed 3, 65, 15711 Mbps 354 Mbps 3splash pageweb page redirect 239, 328web page redirect, customize 240SSH 21, 22, 51, 69, 149, 157, 191, 408, 414SSH-2 191SSID 5, 69, 80, 112, 149, 222, 231, 406, 412, 417about usage 413active IAPs 243QoS 226, 232about using 413, 414QoS, about usage 413web page redirect settings 235web page redirect settings, about237, 241, 242SSID Access List 244SSID address 244SSID Management 231, 406, 412standby mode 282stateful filteringdisabling 310static IP 69, 149, 157stationassurance 288station assurance 288station timeout period 261Stations 412stationslimits and interactions 250rogues 113statistics 140statistics per station 141statistics 149filters 140netflow 173per-station 141stations 140WDS 139status bar 80, 85styleWMI appearance 333submitting comments 85subnet 21, 41, 69, 157switch failover 41synchronize 69, 149, 171Syslog 69, 80, 149, 170, 176, 404time-stamping 69syslog messagescounters 84Syslog reporting 176Syslog Server 176system commandsping, trace route, RADIUS ping329System Configuration Reset 319System Log 176system logviewing window 142System Reboot 319System Tools 319system tools 320
Wireless Array476 IndexTtag, WiFi 175T-bar 61T-bar clips 61TCPport requirements 47technical supportcontact information 429frequently asked questions 412Telnet 191, 408, 414Temporal Key Integrity Protocol 414TFTP serverautomatic update of boot image, configuration 323Time Out 404time zone 69, 149, 171timeout 261, 319Tips 411TKIP 13, 45, 55, 69, 149, 406, 414TKIP encryptionand XN Arrays 213toolping, trace route, RADIUS ping329Tools 319, 414tools, network 329tools, system 320trace route utility 329trafficfiltering 308limits and interactions 250transmit power 26Trap Host 405trap port 179, 405tunneledfast roaming 268tunnelssee VTun 185, 189UUDPport requirements 47Unit 61attaching 61mounting 61unknownsetting rogues 113upgradelicense key 323software image 322upgrading software imagevia CLI 424UPS 21, 55user accountssetting RADIUS VSAs 216user group 246QoS 249user group limits and interactions 250user interface 79utilitiesping, trace route, RADIUS ping329utility buttons 85VVendor Specific Attributes (VSAs)RADIUS, for Xirrus 423virtual tunnelssee VTun 189VLAN 5, 55, 231, 406, 412, 417broadcast optimization 267dynamicoverridden by group 249group (vs. dynamic VLAN) 249vlanCLI command 384VLAN ID 231VLANs 185and fast roaming 255
Wireless ArrayIndex 477voicefast roaming 255implementing on Array 24, 185, 226Voice-over IP 274VoIP 274VoWLAN 14VPN 69, 149, 414VTSVirtual Tunnel Server 185, 189VTunspecifying tunnel server 185, 189understanding 185Wwall thickness considerations 24warning messages 83WDS 302, 304about 52long distance 260, 303planning 52statistics 139timeouts 260, 303WDS Client Links 304Web interfacestructure and navigation 83web interface 79Web Management Interface 51, 61, 62, 65, 87, 412Web Management Interface (WMI) 79web page redirect 328also called WPR 328CHAP (Challenge-Handshake Au-thentication Protocol) 240customize internal login/splash page 240HTTPS port 237, 241, 242install files for 328internal login page 238internal splash page 239PAP, CHAP 240RADIUS settings 240remove files for 329sample WPR files 329SSID settings 235SSID settings, about 237, 241, 242WEP 13, 45, 69, 149, 190, 231, 406, 414WEP (Wired Equivalent Privacy)encryption method 192WEP encryptionand XN Arrays 214Wi-Fi Protected Access 5, 45, 69, 149, 414WiFi tag 175wifi-tagCLI command 385window loadingWMI 335Wired Equivalent Privacy 69, 414Wireless Distribution System 302wireless LAN 3wireless security 149WLAN 149WMI 5, 51, 55, 65, 79, 256appearance options 333appearance, changing 333certificate error 194, 207executing CLI commands 332menu behavior 335options 333page loading 335refresh interval 335workflow 56WPA 5, 55, 69, 149, 190, 231, 406, 414WPA (Wi-Fi Protected Access) and WPA2encryption method 192WPA2 5WPRsee web page redirect 328
Wireless Array478 Indexwpr.pl 328, 329XX.509certificate 194, 207XA-3300 1, 5Xirruscertificate authority 207Xirrus Advanced RF Analysis Manag-ersee RAM 16Xirrus Advanced RF Performance Managersee RPM 14Xirrus Advanced RF Security Managersee RSM 15Xirrus Management System 5, 10, 13, 23SNMP required 179, 180Xirrus Management System (XMS) 1Xirrus PoGE Power Injectors 1Xirrus Power over Gigabit Ethernet 21Xirrus Remote DC Power System 21, 58Xirrus Roaming Protocol 13, 100, 268Xirrus Wireless Management System21, 51, 414XM-3300 1, 5, 21, 51, 55, 179, 414XMS 5, 10, 13, 23port requirements 47setting IP address of 179SNMP required 179, 180XN12 1, 5XN16 1, 5management 319XN4 1, 5XN8 1, 5XP PoGE Power Injectors 1XP1, XP8see Power over Gigabit Ethernet 10XP-3100 21, 55, 58XPS 21XRP 13, 100, 268xs_current.conf 324xs_diagnostic.log 327XS16 1, 5management 147, 319XS4 1, 5XS8 1, 5
High Performance Wireless Networks1.800.947.7871 Toll Free in the US+1.805.262.1600 Sales+1.805.262.1601 Fax2101 Corporate Center DriveThousand Oaks, CA 91320, USATo learn more visit:xirrus.com oremail info@xirrus.com© 2011 Xirrus, Inc. All Rights Reserved. The Xirrus logo is a registered trademark of Xirrus, Inc. All other trademarks are the property of their respective owners. Content subject to change without notice.800-0022-001D

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