Comtrend NL-3112U A/VDSL Bonded Router User Manual CT 5374

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Date Submitted	2014-07-24 00:00:00
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5.5 Parental Control
This selection provides WAN access control functionality.
5.5.1
Time Restriction
This feature restricts access from a LAN device to an outside network through the
device on selected days at certain times. Make sure to activate the Internet Time
server synchronization as described in section 8.5 Internet Time, so that the
scheduled times match your local time.
Click Add to display the following screen.
See below for field descriptions. Click Apply/Save to add a time restriction.
User Name: A user-defined label for this restriction.
Browser's MAC Address: MAC address of the PC running the browser.
Other MAC Address: MAC address of another LAN device.
Days of the Week: The days the restrictions apply.
Start Blocking Time: The time the restrictions start.
End Blocking Time: The time the restrictions end.
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5.5.2
URL Filter
This screen allows for the creation of a filter rule for access rights to websites based
on their URL address and port number.
Select URL List Type: Exclude or Include.
Tick the Exclude radio button to deny access to the websites listed.
Tick the Include radio button to restrict access to only those listed websites.
Then click Add to display the following screen.
Enter the URL address and port number then click Save/Apply to add the entry to
the URL filter. URL Addresses begin with “www”, as shown in this example.
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A maximum of 100 entries can be added to the URL Filter list.
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5.6 Home networking
5.6.1 Print Server
This page allows you to enable or disable printer support.
Please reference Appendix G to see the procedure for enabling the Printer Server.
5.6.2 DLNA
Enabling DLNA allows users to share digital media, like pictures, music and video, to
other LAN devices from the digital media server.
Insert USB drive to the USB host port on the back of router. Modify media library
path to the corresponding path of the USB drive and click Apply/Save to enable the
DLNA media server.
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5.6.3 Storage Service
Enabling Samba service allows the user to share files on the storage
device. Different levels of user access can be configured after samba security mode
is enabled. This page also displays storage devices attached to USB host.
Display after storage device attached (for your reference).
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Chapter 6 Advanced Setup
You can reach this page by clicking on the following icon located at the top of the
screen.
6.1 Auto-detection setup
The auto-detection function is used for CPE to detect WAN service for either
ETHWAN or xDSL interface. The feature is designed for the scenario that requires
only one WAN service in different applications.
The Auto Detection page simply provides a checkbox allowing users to enable or
disable the feature. Check the checkbox to display the following configuration
options.
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Enter the PPP username/password given by your service provider for PPP service
detection.
Select a LAN-as-WAN Ethernet port for auto-detect:
Select the Ethernet Port that will be used as ETHWAN during auto-detection.
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WAN services list for ATM mode: A maximum of 7 WAN services with
corresponding PVC are required to be configured for ADSL ATM mode. The services
will be detected in order. Users can modify the 7 pre-configured services and select
disable to ignore any of those services to meet their own requirement and also
reduce the detection cycle.
WAN services list for PTM mode: A maximum of 7 WAN services with
corresponding VLAN ID (-1 indicates no VLAN ID is required for the service) are
required to be configured for ADSL/VDSL PTM mode and ETHWAN. The services will
be detected in order. Users can modify the 7 pre-configured services and select
disable to ignore any of the services to meet their own requirement and also reduce
the detection cycle.
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Click "Apply/Save" to activate the auto-detect function.
Options for each WAN service: These options are selectable for each WAN
service. Users can pre-configure both WAN services and other provided settings to
meet their deployed requirements.
Auto Detection status and Restart
The Auto-detection status is used to display the real time status of the
Auto-detection feature.
The Restart button is used to detect all the WAN services that are either detected
by the auto-detection feature or configured manually by users.
The following window will pop up upon clicking the Restart button. Click the OK
button to proceed.
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Auto Detection notice
Note: The following description concerning ETHWAN is for multiple LAN port devices
only.
1) This feature will automatically detect one WAN service only. If customers require
multiple WAN services, manual configuration is required.
2) If a physical ETHWAN port is detected, the Auto Detection for ETHWAN will be
fixed on the physical ETHWAN port and cannot be configured for any LAN port;
if the physical ETHWAN port is not detected, the Auto Detection for ETHWAN will
be configured to the 4th LAN port by default and allows it to be configured for any
LAN port as well.
3) For cases in which both the DSL port and ETHWAN port are plugged in at the
same time, the DSL WAN will have priority over ETHWAN. For example, the
ETHWAN port is plugged in with a WAN service detected automatically and then
the DSL port is plugged in and linked up. The Auto Detection feature will clear
the WAN service for ETHWAN and re-detect the WAN service for DSL port.
4) If none of the pre-configured services are detected, a Bridge service will be
created.
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6.2 Security
To display this function, you must enable the firewall feature in WAN Setup.
For detailed descriptions, with examples, please consult Appendix A - Firewall.
6.2.1
IP Filtering
This screen sets filter rules that limit IP traffic (Outgoing/Incoming). Multiple filter
rules can be set and each applies at least one limiting condition. For individual IP
packets to pass the filter all conditions must be fulfilled.
NOTE:
This function is not available when in bridge mode. Instead, MAC Filtering
performs a similar function.
OUTGOING IP FILTER
By default, all outgoing IP traffic is allowed, but IP traffic can be blocked with filters.
To add a filter (to block some outgoing IP traffic), click the Add button.
On the following screen, enter your filter criteria and then click Apply/Save.
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Consult the table below for field descriptions.
Field
Description
Filter Name
The filter rule label
IP Version
Select from the drop down menu.
Protocol
TCP, TCP/UDP, UDP, or ICMP.
Source IP address
Enter source IP address.
Source Port (port or port:port)
Enter source port number or range.
Destination IP address
Enter destination IP address.
Destination Port (port or port:port)
Enter destination port number or range.
INCOMING IP FILTER
By default, all incoming IP traffic is blocked, but IP traffic can be allowed with filters.
To add a filter (to allow incoming IP traffic), click the Add button.
On the following screen, enter your filter criteria and then click Apply/Save.
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Consult the table below for field descriptions.
Field
Description
Filter Name
The filter rule label.
IP Version
Select from the drop down menu.
Protocol
TCP, TCP/UDP, UDP, or ICMP.
Policy
Permit/Drop packets specified by the firewall
rule.
Source IP address
Enter source IP address.
Source Port (port or port:port)
Enter source port number or range.
Destination IP address
Enter destination IP address.
Destination Port (port or port:port)
Enter destination port number or range.
At the bottom of this screen, select the WAN and LAN Interfaces to which the filter
rule will apply. You may select all or just a subset. WAN interfaces in bridge mode or
without firewall enabled are not available.
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6.2.2
NOTE:
MAC Filtering
This option is only available in bridge mode. Other modes use IP Filtering
to perform a similar function.
Each network device has a unique 48-bit MAC address. This can be used to filter
(block or forward) packets based on the originating device. MAC filtering policy and
rules for the NexusLink 3112u can be set according to the following procedure.
The MAC Filtering Global Policy is defined as follows. FORWARDED means that all
MAC layer frames will be FORWARDED except those matching the MAC filter rules.
BLOCKED means that all MAC layer frames will be BLOCKED except those
matching the MAC filter rules. The default MAC Filtering Global policy is
FORWARDED. It can be changed by clicking the Change Policy button.
Choose Add or Remove to configure MAC filtering rules. The following screen will
appear when you click Add. Create a filter to identify the MAC layer frames by
specifying at least one condition below. If multiple conditions are specified, all of
them must be met. Click Save/Apply to save and activate the filter rule.
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Click Save/Apply to save and activate the filter rule.
Consult the table below for detailed field descriptions.
Field
Description
Protocol Type
PPPoE, IPv4, IPv6, AppleTalk, IPX, NetBEUI, IGMP
Destination MAC Address
Defines the destination MAC address
Source MAC Address
Defines the source MAC address
Frame Direction
Select the incoming/outgoing packet interface
WAN Interfaces
Applies the filter to the selected bridge interface
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6.3 Quality of Service (QoS)
NOTE:
QoS must be enabled in at least one PVC to display this option.
(see Appendix E - Connection Setup for detailed PVC setup instructions).
To Enable QoS tick the checkbox
and select a Default DSCP Mark.
Click Apply/Save to activate QoS.
QoS and DSCP Mark are defined as follows:
Quality of Service (QoS): This provides different priority to different users or data
flows, or guarantees a certain level of performance to a data flow in accordance with
requests from Queue Prioritization.
Default Differentiated Services Code Point (DSCP) Mark: This specifies the per hop
behavior for a given flow of packets in the Internet Protocol (IP) header that do not
match any other QoS rule.
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6.3.1
QoS Queue Setup
Configure queues with different priorities to be used for QoS setup.
In ATM mode, maximum 16 queues can be configured.
In PTM mode, maximum 8 queues can be configured.
For each Ethernet interface, maximum 3 queues can be configured.
To add a queue, click the Add button.
To remove queues, check their remove-checkboxes (for user created queues), then
click the Remove button.
The Enable button will scan through every queues in the table. Queues with
enable-checkbox checked will be enabled. Queues with enable-checkbox
un-checked will be disabled.
The enable-checkbox also shows status of the queue after page reload.
Note that if WMM function is disabled in Wireless Page, queues related to wireless
will not take effect. This function follows the Differentiated Services rule of IP QoS.
You can create a new Queue entry by clicking the Add button.
Enable and assign an interface and precedence on the next screen. Click
Save/Reboot on this screen to activate it.
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Click Add to display the following screen.
Click Apply/Save to apply and save the settings.
Name: Identifier for this Queue entry.
Enable: Enable/Disable the Queue entry.
Interface: Assign the entry to a specific network interface (QoS enabled).
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6.3.2
QoS Policer
To remove policers, check their remove-checkboxes, then click the Remove button.
The Enable button will scan through every policers in the table. Policers with
enable-checkbox checked will be enabled. Policers with enable-checkbox
un-checked will be disabled.
The enable-checkbox also shows status of the policer after page reload.
To add a policer, click the Add button.
Click Apply/Save to save the policer.
Field
Description
Name
Name of this policer rule
Enable
Enable/Disable this policer rule
Meter Type
Meter type used for this policer rule
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Field
Description
Committed Rate (kbps)
Defines the rate allowed for committed packets
Committed Burst Size
(bytes)
Maximum amount of packets that can be processed by
this policer
Conforming Action
Defines action to be taken if packets match this policer
Nonconforming Action
Defines actions to be taken if packets do not match
this policer
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6.3.3 QoS Classification
The network traffic classes are listed in the following table.
Click Add to configure a network traffic class rule and Enable to activate it. To
delete an entry from the list, click Remove.
This screen creates a traffic class rule to classify the upstream traffic, assign
queuing priority and optionally overwrite the IP header DSCP byte. A rule consists of
a class name and at least one logical condition. All the conditions specified in the
rule must be satisfied for it to take effect.
Click Apply/Save to save and activate the rule.
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Field
Description
Traffic Class Name
Enter a name for the traffic class.
Rule Order
Last is the only option.
Rule Status
Disable or enable the rule.
Classification Criteria
Class Interface
Select an interface (i.e. Local, eth0-4, wl0)
Ether Type
Set the Ethernet type (e.g. IP, ARP, IPv6).
Source MAC Address
A packet belongs to SET-1, if a binary-AND of its source
MAC address with the Source MAC Mask is equal to the
binary-AND of the Source MAC Mask and this field.
Source MAC Mask
This is the mask used to decide how many bits are checked
in Source MAC Address.
Destination MAC
Address
A packet belongs to SET-1 then the result that the
Destination MAC Address of its header binary-AND to the
Destination MAC Mask must equal to the result that this
field binary-AND to the Destination MAC Mask.
Destination MAC Mask
This is the mask used to decide how many bits are checked
in Destination MAC Address.
Classification Results
Specify Class Queue
Packets classified into a queue that exit through an
interface for which the queue is not specified to exist, will
instead egress to the default queue on the interface.
Specify Class Policer
Packets classified into a policer will be marked based on
the conforming action of the policer
Mark Differentiated
Service Code Point
The selected Code Point gives the corresponding priority to
packets that satisfy the rule.
Mark 802.1p Priority
Select between 0-7. Lower values have higher priority.
Set Rate Limit
The data transmission rate limit in kbps.
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6.4 Routing
The following routing functions are accessed from this menu:
Default Gateway, Static Route, Policy Routing, RIP and IPv6 Static Route.
NOTE:
6.4.1
In bridge mode, the RIP menu option is hidden while the other menu
options are shown but ineffective.
Default Gateway
Default gateway interface list can have multiple WAN interfaces served as system
default gateways but only one will be used according to the priority with the first
being the highest and the last one the lowest priority if the WAN interface is
connected. Priority order can be changed by removing all and adding them back in
again.
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6.4.2
Static Route
This option allows for the configuration of static routes by destination IP.
Click Add to create a static route or click Remove to delete a static route.
After clicking Add the following will display.





IP Version: Select the IP version to be IPv4.
Destination IP address/prefix length: Enter the destination IP address.
Interface: select the proper interface for the rule.
Gateway IP Address: The next-hop IP address.
Metric: The metric value of routing.
After completing the settings, click Apply/Save to add the entry to the routing
table.
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6.4.3
Policy Routing
This option allows for the configuration of static routes by policy.
Click Add to create a routing policy or Remove to delete one.
On the following screen, complete the form and click Apply/Save to create a policy.
Field
Description
Policy Name
Name of the route policy
Physical LAN Port
Specify the port to use this route policy
Source IP
IP Address to be routed
Use Interface
Interface that traffic will be directed to
Default Gateway IP
IP Address of the default gateway
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6.4.4
RIP
To activate RIP, configure the RIP version/operation mode and select the Enabled
checkbox  for at least one WAN interface before clicking Save/Apply.
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6.5 DNS
6.5.1
DNS Server
Select DNS Server Interface from available WAN interfaces OR enter static DNS
server IP addresses for the system. In ATM mode, if only a single PVC with IPoA or
static IPoE protocol is configured, Static DNS server IP addresses must be entered.
DNS Server Interfaces can have multiple WAN interfaces served as system dns
servers but only one will be used according to the priority with the first being the
highest and the last one the lowest priority if the WAN interface is connected.
Priority order can be changed by removing all and adding them back in again.
Click Apply/Save to save the new configuration.
NOTE:
You must reboot the router to make the new configuration effective.
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6.5.2
Dynamic DNS
The Dynamic DNS service allows you to map a dynamic IP address to a static
hostname in any of many domains, allowing the NexusLink 3112u to be more easily
accessed from various locations on the Internet.
To add a dynamic DNS service, click Add. The following screen will display.
Click Apply/Save to save your settings.
Consult the table below for field descriptions.
Field
Description
D-DNS provider
Select a dynamic DNS provider from the list
Hostname
Enter the name of the dynamic DNS server
Interface
Select the interface from the list
Username
Enter the username of the dynamic DNS server
Password
Enter the password of the dynamic DNS server
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6.5.3
DNS Entries
The DNS Entry page allows you to add domain names and IP address desired to be
resolved by the DSL router.
Choose Add or Remove to configure DNS Entry. The entries will become active after
save/reboot.
Enter the domain name and IP address that needs to be resolved locally, and click
the Add Entry button.
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6.5.4 DNS Proxy/Relay
DNS proxy receives DNS queries and forwards DNS queries to the Internet. After the
CPE gets answers from the DNS server, it replies to the LAN clients. Configure DNS
proxy with the default setting, when the PC gets an IP via DHCP, the domain name,
Home, will be added to PC’s DNS Suffix Search List, and the PC can access route with
“Comtrend.Home”.
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6.6 DSL
The DSL Settings screen allows for the selection of DSL modulation modes.
For optimum performance, the modes selected should match those of your ISP.
DSL Mode
Data Transmission Rate - Mbps (Megabits per second)
G.Dmt
Downstream: 12 Mbps
Upstream: 1.3 Mbps
G.lite
Downstream:
4 Mbps
Upstream: 0.5 Mbps
T1.413
Downstream:
8 Mbps
Upstream: 1.0 Mbps
ADSL2
Downstream: 12 Mbps
Upstream: 1.0 Mbps
AnnexL
Supports longer loops but with reduced transmission rates
ADSL2+
Downstream: 24 Mbps
Upstream: 1.0 Mbps
AnnexM
Downstream: 24 Mbps
Upstream: 3.5 Mbps
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DSL Mode
Data Transmission Rate - Mbps (Megabits per second)
VDSL2
Downstream: 100 Mbps
Options
Description
Inner/Outer Pair
Select the inner or outer pins of the twisted pair (RJ11 cable)
Bitswap Enable
Enables adaptive handshaking functionality
SRA Enable
Enables Seamless Rate Adaptation (SRA)
Select DSL LED
behavior
Normal (TR-68 compliant): Select this option for DSL LED to
operate normally (See menu 2.2 LED Indicator)
Upstream: 60 Mbps
Off:DSL LED will always be OFF
G997.1 EOC
xTU-R Serial
Number
Select Equipment Serial Number or Equipment MAC Address to
use router’s serial number or MAC address in ADSL EOC
messages
Advanced DSL Settings
Click Advanced Settings to reveal additional options.
On this screen you select the required test mode, then click the Apply button.
Field
Description
Normal
DSL line signal is detected and sent normally
Reverb
DSL line signal is sent continuously in reverb mode
Medley
DSL line signal is sent continuously in medley mode
No Retrain
DSL line signal will always be on even when DSL line is unplugged
L3
DSL line is set in L3 power mode
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6.7 DSL Bonding
This screen displays the current status of DSL bonding mode. Bonding status is
detected automatically.
NOTE: This configuration doesn't take effect until router is rebooted.
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6.8 Interface Grouping
Interface Grouping supports multiple ports to PVC and bridging groups. Each group
performs as an independent network. To use this feature, you must create mapping
groups with appropriate LAN and WAN interfaces using the Add button.
The Remove button removes mapping groups, returning the ungrouped interfaces
to the Default group. Only the default group has an IP interface.
To add an Interface Group, click the Add button. The following screen will appear.
It lists the available and grouped interfaces. Follow the instructions shown
onscreen.
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Automatically Add Clients With Following DHCP Vendor IDs:
Add support to automatically map LAN interfaces to PVC's using DHCP vendor ID
(option 60). The local DHCP server will decline and send the requests to a remote
DHCP server by mapping the appropriate LAN interface. This will be turned on when
Interface Grouping is enabled.
For example, imagine there are 4 PVCs (0/33, 0/36, 0/37, 0/38). VPI/VCI=0/33 is
for PPPoE while the other PVCs are for IP set-top box (video). The LAN interfaces are
ETH1, ETH2, ETH3, and GBETH.
The Interface Grouping configuration will be:
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1. Default: ETH1, ETH2, ETH3, and GBETH.
2. Video: nas_0_36, nas_0_37, and nas_0_38. The DHCP vendor ID is "Video".
If the onboard DHCP server is running on "Default" and the remote DHCP server is
running on PVC 0/36 (i.e. for set-top box use only). LAN side clients can get IP
addresses from the CPE's DHCP server and access the Internet via PPPoE (0/33).
If a set-top box is connected to ETH1 and sends a DHCP request with vendor ID
"Video", the local DHCP server will forward this request to the remote DHCP server.
The Interface Grouping configuration will automatically change to the following:
1. Default: ETH2, ETH3, and GBETH
2. Video: nas_0_36, nas_0_37, nas_0_38, and ETH1.
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6.9 IP Tunnel
6.9.1 IPv6inIPv4
Configure 6in4 tunneling to encapsulate IPv6 traffic over explicitly-configured IPv4
links.
Click the Add button to display the following.
Options
Description
Tunnel Name
Input a name for the tunnel
Mechanism
Mechanism used by the tunnel deployment
Associated WAN Interface
Select the WAN interface to be used by the tunnel
Associated LAN Interface
Select the LAN interface to be included in the tunnel
Manual/Automatic
Select automatic for point-to-multipoint tunneling /
manual for point-to-point tunneling
IPv4 Mask Length
The subnet mask length used for the IPv4 interface
6rd Prefix with Prefix Length
Prefix and prefix length used for the IPv6 interface
Border Relay IPv4 Address
Input the IPv4 address of the other device
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6.9.2 IPv4inIPv6
Configure 4in6 tunneling to encapsulate IPv4 traffic over an IPv6-only environment.
Click the Add button to display the following.
Options
Description
Tunnel Name
Input a name for the tunnel
Mechanism
Mechanism used by the tunnel deployment
Associated WAN Interface
Select the WAN interface to be used by the tunnel
Associated LAN Interface
Select the LAN interface to be included in the tunnel
Manual/Automatic
Select automatic for point-to-multipoint tunneling /
manual for point-to-point tunneling
AFTR
Address of Address Family Translation Router
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6.10 Certificate
A certificate is a public key, attached with its owner’s information (company name,
server name, personal real name, contact e-mail, postal address, etc) and digital
signatures. There will be one or more digital signatures attached to the certificate,
indicating that these entities have verified that this certificate is valid.
6.10.1 Local
CREATE CERTIFICATE REQUEST
Click Create Certificate Request to generate a certificate-signing request.
The certificate-signing request can be submitted to the vendor/ISP/ITSP to apply for
a certificate. Some information must be included in the certificate-signing request.
Your vendor/ISP/ITSP will ask you to provide the information they require and to
provide the information in the format they regulate. Enter the required information
and click Apply to generate a private key and a certificate-signing request.
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The following table is provided for your reference.
Field
Description
Certificate Name
A user-defined name for the certificate.
Common Name
Usually, the fully qualified domain name for the machine.
Organization Name
The exact legal name of your organization.
Do not abbreviate.
State/Province Name
The state or province where your organization is located.
It cannot be abbreviated.
Country/Region Name
The two-letter ISO abbreviation for your country.
IMPORT CERTIFICATE
Click Import Certificate to paste the certificate content and the private key
provided by your vendor/ISP/ITSP into the corresponding boxes shown below.
Enter a certificate name and click the Apply button to import the certificate and its
private key.
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6.10.2 Trusted CA
CA is an abbreviation for Certificate Authority, which is a part of the X.509 system.
It is itself a certificate, attached with the owner information of this certificate
authority; but its purpose is not encryption/decryption. Its purpose is to sign and
issue certificates, in order to prove that these certificates are valid.
Click Import Certificate to paste the certificate content of your trusted CA. The
CA certificate content will be provided by your vendor/ISP/ITSP and is used to
authenticate the Auto-Configuration Server (ACS) that the CPE will connect to.
Enter a certificate name and click Apply to import the CA certificate.
104
6.11 Power Management
This screen allows for control of hardware modules to evaluate power consumption.
Use the buttons to select the desired option, click Apply and check the response.
105
6.12 Multicast
Input new IGMP or MLD protocol configuration fields if you want modify default
values shown. Then click Apply/Save.
Field
Description
Default Version
Define IGMP using version with video server.
Query Interval
The query interval is the amount of time in seconds
between IGMP General Query messages sent by the
router (if the router is the querier on this subnet). The
default query interval is 125 seconds.
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Field
Description
Query Response Interval
The query response interval is the maximum amount
of time in seconds that the IGMP router waits to
receive a response to a General Query message. The
query response interval is the Maximum Response
Time field in the IGMP v2 Host Membership Query
message header. The default query response interval
is 10 seconds and must be less than the query
interval.
Last Member Query
Interval
The last member query interval is the amount of time
in seconds that the IGMP router waits to receive a
response to a Group-Specific Query message. The last
member query interval is also the amount of time in
seconds between successive Group-Specific Query
messages. The default last member query interval is
10 seconds.
Robustness Value
The robustness variable is a way of indicating how
susceptible the subnet is to lost packets. IGMP can
recover from robustness variable minus 1 lost IGMP
packets. The robustness variable should be set to a
value of 2 or greater. The default robustness variable
value is 2.
Maximum Multicast
Groups
Setting the maximum number of Multicast groups.
Maximum Multicast Data
Sources (for IGMPv3)
Define the maximum multicast video stream number.
Maximum Multicast
Group Members
Setting the maximum number of groups that ports
can accept.
Fast Leave Enable
When you enable IGMP fast-leave processing, the
switch immediately removes a port when it detects an
IGMP version 2 leave message on that port.
LAN to LAN (Intra LAN)
Multicast Enable
This will activate IGMP snooping for cases where
multicast data source and player are all located on the
LAN side.
Membership to join
Immediate (IPTV)
Enable IGMP immediate join feature for multicast
membership group.
107
6.13 Wireless
6.13.1 Basic
The Basic option allows you to configure basic features of the wireless LAN interface.
Among other things, you can enable or disable the wireless LAN interface, hide the
network from active scans, set the wireless network name (also known as SSID)
and restrict the channel set based on country requirements.
Click Apply/Save to apply the selected wireless options.
Consult the table below for descriptions of these options.
Option
Description
Enable
Wireless
A checkbox  that enables or disables the wireless LAN interface.
When selected, a set of basic wireless options will appear.
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Option
Description
Hide Access
Point
Select Hide Access Point to protect the access point from detection
by wireless active scans. To check AP status in Windows XP, open
Network Connections from the start Menu and select View
Available Network Connections. If the access point is hidden, it
will not be listed there. To connect a client to a hidden access point,
the station must add the access point manually to its wireless
configuration.
Clients
Isolation
When enabled, it prevents client PCs from seeing one another in My
Network Places or Network Neighborhood. Also, prevents one
wireless client communicating with another wireless client.
Disable WMM
Advertise
Stops the router from ‘advertising’ its Wireless Multimedia (WMM)
functionality, which provides basic quality of service for
time-sensitive applications (e.g. VoIP, Video).
Enable
Wireless
Multicast
Forwarding
Select the checkbox  to enable this function.
Enable WiFi
Button
Select the checkbox  to enable the WiFi button.
SSID
Sets the wireless network name. SSID stands for Service Set
Identifier. All stations must be configured with the correct SSID to
access the WLAN. If the SSID does not match, that user will not be
granted access.
[1-32
characters]
BSSID
The BSSID is a 48-bit identity used to identify a particular BSS
(Basic Service Set) within an area. In Infrastructure BSS
networks, the BSSID is the MAC (Media Access Control) address of
the AP (Access Point); and in Independent BSS or ad hoc networks,
the BSSID is generated randomly.
Country
A drop-down menu that permits worldwide and specific national
settings. Local regulations limit channel range:
US= worldwide, Japan=1-14, Jordan= 10-13, Israel= 1-13
Max Clients
The maximum number of clients that can access the router.
Wireless Guest /
Virtual
Access Points
This router supports multiple SSIDs called Guest SSIDs or Virtual
Access Points. To enable one or more Guest SSIDs select the
checkboxes  in the Enabled column. To hide a Guest SSID select
its checkbox  in the Hidden column.
Do the same for Isolate Clients and Disable WMM Advertise.
For a description of these two functions, see the previous entries for
“Clients Isolation” and “Disable WMM Advertise”. Similarly, for
Enable WMF, Max Clients and BSSID, consult the matching
entries in this table.
NOTE: Remote wireless hosts cannot scan Guest SSIDs.
109
6.13.2 Security
The following screen appears when Wireless Security is selected. The options shown
here allow you to configure security features of the wireless LAN interface.
Click Apply/Save to implement new configuration settings.
WIRELESS SECURITY
Setup requires that the user configure these settings using the Web User Interface
(see the table below).
Select SSID
Select the wireless network name from the drop-down box. SSID stands for Service
Set Identifier. All stations must be configured with the correct SSID to access the
WLAN. If the SSID does not match, that client will not be granted access.
Network Authentication
This option specifies whether a network key is used for authentication to the
wireless network. If network authentication is set to Open, then no authentication
is provided. Despite this, the identity of the client is still verified.
110
Each authentication type has its own settings. For example, selecting 802.1X
authentication will reveal the RADIUS Server IP address, Port and Key fields. WEP
Encryption will also be enabled as shown below.
The settings for WPA authentication are shown below.
The settings for WPA-PSK authentication are shown next.
111
WEP Encryption
This option specifies whether data sent over the network is encrypted. The same
network key is used for data encryption and network authentication. Four network
keys can be defined although only one can be used at any one time. Use the Current
Network Key list box to select the appropriate network key.
Security options include authentication and encryption services based on the wired
equivalent privacy (WEP) algorithm. WEP is a set of security services used to
protect 802.11 networks from unauthorized access, such as eavesdropping; in this
case, the capture of wireless network traffic.
When data encryption is enabled, secret shared encryption keys are generated and
used by the source station and the destination station to alter frame bits, thus
avoiding disclosure to eavesdroppers.
Under shared key authentication, each wireless station is assumed to have received
a secret shared key over a secure channel that is independent from the 802.11
wireless network communications channel.
Encryption Strength
This drop-down list box will display when WEP Encryption is enabled. The key
strength is proportional to the number of binary bits comprising the key. This
means that keys with a greater number of bits have a greater degree of security and
are considerably more difficult to crack. Encryption strength can be set to either
64-bit or 128-bit. A 64-bit key is equivalent to 5 ASCII characters or 10
hexadecimal numbers. A 128-bit key contains 13 ASCII characters or 26
hexadecimal numbers. Each key contains a 24-bit header (an initiation vector)
which enables parallel decoding of multiple streams of encrypted data.
112
6.13.3 WPS
Wi-Fi Protected Setup (WPS) is an industry standard that simplifies wireless security
setup for certified network devices. Every WPS certified device has both a PIN
number and a push button, located on the device or accessed through device
software. The NexusLink 3112u has a WPS button on the device.
Devices with the WPS logo (shown here)
support WPS. If the WPS logo is not present
on your device it still may support WPS, in
this case, check the device documentation
for the phrase “Wi-Fi Protected Setup”.
NOTE:
WPS is only available in Open, WPA-PSK, WPA2-PSK and Mixed
WPA2/WPA-PSK network authentication modes. Other authentication
modes do not use WPS so they must be configured manually.
To configure security settings with WPS, follow the procedures below. You must
choose either the Push-Button or PIN configuration method for Steps 6 and 7.
I. Setup
Step 1:
Enable WPS by selecting Enabled from the drop down list box shown.
Step 2:
Set the WPS AP Mode. Configured is used when the NexusLink 3112u
will assign security settings to clients. Unconfigured is used when an
external client assigns security settings to the NexusLink 3112u.
NOTES:
Your client may or may not have the ability to provide security settings to
the NexusLink 3112u. If it does not, then you must set the WPS AP
mode to Configured. Consult the device documentation to check its
capabilities.
In addition, using Windows 7, you can add an external registrar using the
Config AP button (Appendix F - WPS OPERATION has detailed
instructions).
113
6.13.4 MAC Filter
This option allows access to the router to be restricted based upon MAC addresses.
To add a MAC Address filter, click the Add button shown below. To delete a filter,
select it from the MAC Address table below and click the Remove button.
Option
Select
SSID
Description
Select the wireless network name from the drop-down box. SSID stands
for Service Set Identifier. All stations must be configured with the correct
SSID to access the WLAN. If the SSID does not match, that user will not
be granted access.
MAC
Restrict
Mode
Disabled: MAC filtering is disabled.
Allow: Permits access for the specified MAC addresses.
Deny: Rejects access for the specified MAC addresses.
MAC
Address
Lists the MAC addresses subject to the MAC Restrict Mode. A maximum
of 60 MAC addresses can be added. Every network device has a unique
48-bit MAC address. This is usually shown as xx.xx.xx.xx.xx.xx, where
xx are hexadecimal numbers.
After clicking the Add button, the following screen appears.
114
Enter the MAC address in the box provided and click Apply/Save.
115
6.13.5 Wireless Bridge
This screen allows for the configuration of wireless bridge features of the WIFI
interface. See the table beneath for detailed explanations of the various options.
Click Apply/Save to implement new configuration settings.
Feature
Description
AP Mode
Selecting Wireless Bridge (aka Wireless Distribution System)
disables Access Point (AP) functionality, while selecting Access
Point enables AP functionality. In Access Point mode, wireless
bridge functionality will still be available and wireless stations
will be able to associate to the AP.
Bridge Restrict
Selecting Disabled disables wireless bridge restriction, which
means that any wireless bridge will be granted access.
Selecting Enabled or Enabled (Scan) enables wireless bridge
restriction. Only those bridges selected in the Remote Bridges
list will be granted access. Click Refresh to update the station
list when Bridge Restrict is enabled.
116
6.13.6 Advanced
The Advanced screen allows you to configure advanced features of the wireless LAN
interface. You can select a particular channel on which to operate, force the
transmission rate to a particular speed, set the fragmentation threshold, set the RTS
threshold, set the wakeup interval for clients in power-save mode, set the beacon
interval for the access point, set XPress mode and set whether short or long
preambles are used. Click Apply/Save to set new advanced wireless options.
117
Field
Description
Band
Set to 2.4 GHz for compatibility with IEEE 802.11x
standards. The new amendment allows IEEE 802.11n
units to fall back to slower speeds so that legacy IEEE
802.11x devices can coexist in the same network. IEEE
802.11g creates data-rate parity at 2.4 GHz with the IEEE
802.11a standard, which has a 54 Mbps rate at 5 GHz.
(IEEE 802.11a has other differences compared to IEEE
802.11b or g, such as offering more channels.)
Channel
Drop-down menu that allows selection of a specific
channel.
Auto Channel Timer
(min)
Auto channel scan timer in minutes (0 to disable)
802.11n/EWC
An equipment interoperability standard setting based on
IEEE 802.11n Draft 2.0 and Enhanced Wireless
Consortium (EWC)
Bandwidth
Select 20MHz or 40MHz bandwidth. 40MHz bandwidth
uses two adjacent 20MHz bands for increased data
throughput.
Control Sideband
Select Upper or Lower sideband when in 40MHz mode.
802.11n Rate
Set the physical transmission rate (PHY).
802.11n Protection
Turn Off for maximized throughput.
Turn On for greater security.
Support 802.11n
Client Only
Turn Off to allow 802.11b/g clients access to the router.
Turn On to prohibit 802.11b/g client’s access to the router.
RIFS Advertisement
One of several draft-n features designed to improve
efficiency. Provides a shorter delay between OFDM
transmissions than in802.11a or g.
OBSS Co-Existence
Co-existence between 20 MHZ AND 40 MHZ overlapping
Basic Service Set (OBSS) in WLAN.
RX Chain Power Save
Enabling this feature turns off one of the Receive chains,
going from 2x2 to 2x1 to save power.
RX Chain Power Save
Quiet Time
The number of seconds the traffic must be below the PPS
value below before the Rx Chain Power Save feature
activates itself.
RX Chain Power Save
PPS
The maximum number of packets per seconds that can be
processed by the WLAN interface for a duration of Quiet
Time, described above, before the Rx Chain Power Save
feature activates itself.
54g Rate
Drop-down menu that specifies the following fixed rates:
Auto: Default. Uses the 11 Mbps data rate when possible
but drops to lower rates when necessary. 1 Mbps, 2Mbps,
5.5Mbps, or 11Mbps fixed rates. The appropriate setting
is dependent on signal strength.
Multicast Rate
Setting for multicast packet transmit rate (1-54 Mbps)
Basic Rate
Setting for basic transmission rate.
118
Field
Description
Fragmentation
Threshold
A threshold, specified in bytes, that determines whether
packets will be fragmented and at what size. On an
802.11 WLAN, packets that exceed the fragmentation
threshold are fragmented, i.e., split into, smaller units
suitable for the circuit size. Packets smaller than the
specified fragmentation threshold value are not
fragmented. Enter a value between 256 and 2346. If you
experience a high packet error rate, try to slightly increase
your Fragmentation Threshold. The value should remain
at its default setting of 2346. Setting the Fragmentation
Threshold too low may result in poor performance.
RTS Threshold
Request to Send, when set in bytes, specifies the packet
size beyond which the WLAN Card invokes its RTS/CTS
mechanism. Packets that exceed the specified RTS
threshold trigger the RTS/CTS mechanism. The NIC
transmits smaller packet without using RTS/CTS. The
default setting of 2347 (maximum length) disables RTS
Threshold.
DTIM Interval
Delivery Traffic Indication Message (DTIM) is also known
as Beacon Rate. The entry range is a value between 1
and 65535. A DTIM is a countdown variable that informs
clients of the next window for listening to broadcast and
multicast messages. When the AP has buffered
broadcast or multicast messages for associated clients, it
sends the next DTIM with a DTIM Interval value. AP
Clients hear the beacons and awaken to receive the
broadcast and multicast messages. The default is 1.
Beacon Interval
The amount of time between beacon transmissions in
milliseconds. The default is 100 ms and the acceptable
range is 1 – 65535. The beacon transmissions identify
the presence of an access point. By default, network
devices passively scan all RF channels listening for
beacons coming from access points. Before a station
enters power save mode, the station needs the beacon
interval to know when to wake up to receive the beacon
(and learn whether there are buffered frames at the
access point).
Global Max Clients
The maximum number of clients that can connect to the
router.
Xpress
TM
Technology
Xpress Technology is compliant with draft specifications of
two planned wireless industry standards.
Transmit Power
Set the power output (by percentage) as desired.
WMM (Wi-Fi
Multimedia)
The technology maintains the priority of audio, video and
voice applications in a Wi-Fi network. It allows multimedia
service get higher priority.
WMM No
Acknowledgement
Refers to the acknowledge policy used at the MAC level.
Enabling no Acknowledgement can result in more efficient
throughput but higher error rates in a noisy Radio
Frequency (RF) environment.
WMM APSD
This is Automatic Power Save Delivery. It saves power.
119
Chapter 7 Diagnostics
You can reach this page by clicking on the following icon located at the top of the
screen.
7.1 Diagnostics – Individual Tests
The first Diagnostics screen is a dashboard that shows overall connection status.
Click the Diagnostics Menu item on the left side of the screen to display the
individual connections.
120
7.2 Fault Management
Item
Description
Maintenance Domain (MD) Level
Management space on the network, the
larger the domain, the higher the level
value
Destination MAC Address
Destination MAC address for sending the
loopback message
802.1Q VLAN ID: [0-4095]
802.1Q VLAN used in VDSL PTM mode
Set MD Level
Save the Maintenance domain level.
Send Loopback
Send loopback message to destination MAC address.
Send Linktrace
Send traceroute message to destination MAC address.
121
7.3 Uptime Status
This page shows System, DSL, ETH and Layer 3 uptime. If the DSL line, ETH or Layer
3 connection is down, the uptime will stop incrementing. If the service is restored,
the counter will reset and start from 0. A Bridge interface will follow the DSL or ETH
timer.
The "ClearAll" button will restart the counters from 0 or show "Not Connected" if the
interface is down.
7.4 Ping
Input the IP address/hostname and click the Ping button to execute ping diagnostic
test to send the ICMP request to the specified host.
122
7.5 Trace Route
Input the IP address/hostname and click the TraceRoute button to execute the
trace route diagnostic test to send the ICMP packets to the specified host.
123
7.6 System Utilization
Click "Start" button to initialize CPU and Memory utilization calculation.
Please wait 10 seconds for the test to run.
124
Chapter 8 Management
You can reach this page by clicking on the following icon located at the top of the
screen.
The Management menu has the following maintenance functions and processes:
8.1 Settings
This includes Backup Settings, Update Settings, and Restore Default screens.
8.1.1
Backup Settings
To save the current configuration to a file on your PC, click Backup Settings. You
will be prompted for backup file location. This file can later be used to recover
settings on the Update Settings screen, as described below.
125
8.1.2
Update Settings
This option recovers configuration files previously saved using Backup Settings.
Enter the file name (including folder path) in the Settings File Name box, or press
Browse… to search for the file, then click Update Settings to recover settings.
8.1.3
Restore Default
Click Restore Default Settings to restore factory default settings.
After Restore Default Settings is clicked, the following screen appears.
Close the browser and wait for 2 minutes before reopening it. It may also be
necessary, to reconfigure your PC IP configuration to match any new settings.
NOTE:
This entry has the same effect as the Reset button. The NexusLink 3112u
board hardware and the boot loader support the reset to default. If the
Reset button is continuously pressed for more than 10 seconds, the boot
loader will erase the configuration data saved in flash memory.
126
8.2 System Log
This function allows a system log to be kept and viewed upon request.
Follow the steps below to configure, enable, and view the system log.
STEP 1: Click Configure System Log, as shown below (circled in Red).
STEP 2: Select desired options and click Apply/Save.
Consult the table below for detailed descriptions of each system log option.
Option
Description
Log
Indicates whether the system is currently recording events. The user
can enable or disable event logging. By default, it is disabled. To
enable it, select the Enable radio button and then click Apply/Save.
127
Option
Description
Log
Level
Allows you to configure the event level and filter out unwanted events
below this level. The events ranging from the highest critical level
“Emergency” down to this configured level will be recorded to the log
buffer on the NexusLink 3112u SDRAM. When the log buffer is full, the
newer event will wrap up to the top of the log buffer and overwrite the old
event. By default, the log level is “Debugging”, which is the lowest critical
level.
The log levels are defined as follows:
•
•
•
•
•
•
•
•
Emergency = system is unusable
Alert = action must be taken immediately
Critical = critical conditions
Error = Error conditions
Warning = normal but significant condition
Notice= normal but insignificant condition
Informational= provides information for reference
Debugging = debug-level messages
Emergency is the most serious event level, whereas Debugging is the
least important. For instance, if the log level is set to Debugging, all the
events from the lowest Debugging level to the most critical level
Emergency level will be recorded. If the log level is set to Error, only
Error and the level above will be logged.
Display
Level
Allows the user to select the logged events and displays on the View
System Log window for events of this level and above to the highest
Emergency level.
Mode
Allows you to specify whether events should be stored in the local
memory, or be sent to a remote system log server, or both
simultaneously. If remote mode is selected, view system log will not be
able to display events saved in the remote system log server.
When either Remote mode or Both mode is configured, the WEB UI will
prompt the user to enter the Server IP address and Server UDP port.
STEP 3: Click View System Log. The results are displayed as follows.
128

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