OTC Wireless 2411EZYLINK-9 2.4GHz Spread Spectrum Station Radio User Manual manual

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2411EZYLINK-9
User’s Manual
OTC Wireless, Inc.
Copyright
© 1997-2000 OTC Wireless Inc., Fremont, CA. All rights reserved. This manual is copyrighted with all
rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a
retrieval system or translated into any language in any form by any means without the written permission
of OTC Wireless, Incorporated.
Trademarks
AirEZY, the AirEZY logo, AMU, OTC Wireless Inc., and the OTC Wireless logo are trademarks of OTC
Wireless, Inc.
Limited Warranty, Disclaimer, Limitation of Liability
For a period of one (1) year from the date of purchase by the retail customer, OTC Wireless Inc., warrants
the 2411EZYLINK-9 wireless Internet access solution against defects in materials and workmanship.
OTC Wireless will not honor this warranty if there has been any attempt to tamper with or remove the
unit’s chassis.
This warranty does not cover and OTC Wireless will not be liable for any damage or failure caused by
misuse, abuse, acts of God, accidents, or other causes beyond OTC Wireless’s control, or claim by other
than the original purchaser.
If, after inspection, OTC Wireless determines there is a defect, OTC Wireless will repair or replace the
2411EZYLINK-9 unit at no cost to you. To return defective merchandise to OTC Wireless please call
OTC Wireless Customer Service at (510)-490-8288 to obtain a Return Merchandise Authorization (RMA)
Number.
In no event shall OTC Wireless, Incorporated be responsible or liable for any damages arising:
•
•
•
From the use of the product
From the loss of use, revenue or profit of the product; or
As a result of any event, circumstance, action, or abuse beyond the control of OTC Wireless,
Incorporated;
whether such damages be direct, indirect, consequential, special or otherwise and whether such damages
are incurred by the person to whom this warranty extends or a third party.
Warranty Return Policy
If you have a problem with your 2411EZYLINK-9 product, please call OTC Wireless Technical Support at
(510)490-8288. OTC Wireless Technical Support will assist with resolving any technical difficulties you
may have with your OTC Wireless product.
After calling OTC Wireless Technical Support, if your product is found to be defective, you may return the
product to OTC Wireless after obtaining an RMA number from OTC Wireless Customer Service. The
product must be returned in its original packaging. The RMA number should be clearly marked on the
outside of the box. OTC Wireless cannot be held responsible for any product returned without an RMA
number, and no product will be accepted without an RMA number.
When calling OTC Wireless, please provide the following information to expedite service:
•
•
Customer account number
Invoice number
•
•
•
Date of Sale
Model number of product
Serial number of product
FCC Identification
MKZ2411EZYLINK-9
FCC Warning
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant
to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in an industrial / commercial installation. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, this is not a guarantee that interference will not
occur in a particular installation.
IMPORTANT NOTE
To comply with FCC RF exposure compliance requirements, the following installation and device
operating configuration must be satisfied
•
•
Do not alter the antenna. Only use the antenna that is installed in this transmitter.
This device must be installed and placed at the position which can provide at least 20cm
separation distance from all persons.
Table of Content
Chapter
Title
Page
1.1
1.2
Introduction
Theory of Operation
Network Topologies
2.1
2.2
Hardware Installation
The Hardware
Installation
14
14
16
3.1
3.2
3.3
3.4
3.5
3.6
Configuring the AMU
Default Configuration of AMU
Modifying the Default AMU Configuration
Configuring AMU using Web Browser
21
Configuring AMU using an External SNMP Manager
Telnet
File Transfer to AMU
20
21
21
24
4.1
4.2
4.3
Configuring, Monitoring the Base Station
and the Client Station
Using a Browser
Using an External SNMP Manager
AMU Web User Administration
5.1
5.2
Product Specifications
Base Station Specifications
Client Station Specifications
40
40
41
22
22
23
24
34
37
1. Introduction
2411EZYLINK-9 is a point-to-multiple-points wireless data networking system. It can be used by internet
service providers as a means of last-mile connection to the users. It can also be used to form a campus
network. Its data-transmitting burst rate is 11 Mbps.
1.1 Theory of Operation
The 2411EZYLINK-9 consists of the Base Station 2411EZYLINK-9-BST and the Client Station
2411EZYLINK-9-CPE. The Base Station consists of the Access Management Unit (AMU) 2411EZYLINK9-BST-AMU and the Base Radio Transceiver 2411EZYLINK-9-BST-TRX. The base station is installed at
the site that has access to the Internet backbone or at the central site of a campus network. The Client
Station consists of the Client Radio Transceiver 2411EZYLINK-9-CPE-TRX and/or the Buffer Box
2411EZYLINK-9-CPE-BFB. The client station is installed at the Internet service subscribers’ site or the
satellite site in a campus network.
All the 2411EZYLINK-9 equipment is designed to work with Ethernet interface. The Radio Transceiver
converts the Ethernet data packets into radio packets and uses direct sequence spread spectrum
modulation to turn the data packets into 2.4 GHz radio signals.
The Base Radio Transceiver and the Client Radio Transceivers each has a unique RFID. A packet to be
relayed between two stations uses the RFID of the originating transceiver as its source address and the
RFID of the intended receiving transceiver as its destination address. The packet transmitted by the
originating transceiver can be received by all the transceivers within the effective receiving range. Only
the transceiver with the correct RFID matching the destination address will process the information
contained in the packet. All the other stations will discard the packet.
Each packet is encrypted before being transmitted by the radio. The RF channel and the encryption code
have to be set the same for two stations to communicate with each other. The Base Station and all the
Client Stations are pre-configured in the factory with the same default RF channel and encryption code.
The user system administrator can use OTC’s system administration software to change the settings (see
Chapter 4 for details).
The communication between the Client Stations and the Base Station is based on a polling process. The
RFID of each Client Station to be served by a Base Station needs to be registered in a polling list stored in
the Base Station transceiver. The OTC’s system administration software can be used to add or delete the
RFIDs of the Client Station transceivers in the Base Station transceiver.
In addition to the Client Station access management, The Access Management Unit (AMU) provides the
following functions:
1. Flow control between the network backbone and multiple Base Radio Transceivers.
2. SNMP and Web based Interface for monitoring and configuring the multiple Base RadioTransceivers
(one AMU can be connected to up to 4 Base Radio Transceivers via a switching hub) and the Client
RadioTransceivers servered by each Base Transceiver Radio.
3. Ethernet bridging, including Spanning Tree support.
The use of the Buffer Box at the Client Station is optional. If the client site has only a small number of
computer stations, the use of the Buffer Box may not be required. When the number of computer stations
on the client site is greater than eight, it is recommended that a Buffer Box be used with the Client Radio
Transceiver.
The Buffer Box provides the following functions:
1. Flow control between the client’s local network and the Client Transceiver Radio.
2. Ethernet bridging, including Spanning Tree support.
Please refer to Chapters 3 and 4 for using and configuring the AMU and the 2411EZYLINK-9 network
system.
1.1 Typical System Configuration using 2411EZYLINK-9 (Single Radio Base Station)
Client Station with Buffer Box
2411EZYLINK-9-CPE
Client Radio Transceiver
Hub
/Switch
/ Router
2411EZYLINK-9
-CPE-TRX
Base Station
2411EZYLINK-9
2411EZYLINK-9
-CPE-BFB
Base Radio Transceiver
Buffer Box
Large Network
(>8 computer stations)
2411EZYLINK-9
-BST-TRX
Internet
Backbone
2411EZYLINK-9
& 2411EZYLINK-9
-BST-AMU
Access Management Unit
Hub
/Switch
/ Router
Client Radio Transceiver
Small Network
( <8 computer stations)
2411EZYLINK-9
-CPE-TRX
Client Station without Buffer Box
2411EZYLINK-9
Multiple-radio Base Station
Base Radio
2411EZYLINK-9
BSTSwitc
2411EZYLINK-9
Interne
Backbon
BST2411EZYLINK-9
BSTAccess Management
2411EZYLINK-9I
BST2411EZYLINK-9
BSTBase Radio
1.2 Application Scenarios / Network Topologies
1.2.1 Accessing Internet from Client Site through Base Station or Networking between Client Sites
and Base Site (Client Sites and Base Sites need to be on the same subnet for IP-networking)
Client
Station
Networking between
Client Site and Base Site
Client
Station
Base Station
Radio Transceiver
Buffer Box (optional)
Hub/Switch
Radio Transceiver
Radio Transceiver
Buffer Box (optional)
Accessing Internet
AMU*
Hub/Switch
Router
Hub/Switch
*AMU configured with
server bridging
function
Wired or Wireless
Connection
Internet
1.2.2 Accessing Internet from Client Site through Base Station or Networking between Client Sites
and Base Site or Networking between Client Site and Client Site (Client Sites and Base Site need
to be on the same subnet for IP-networking)
Client
Station
Networking between
Client Site and Client Site
via Base Site
Client
Networking between
Client Site and Base Site
Base Station
Station
Radio Transceiver
Buffer Box (optional)
Hub/Switch
Radio Transceiver
Radio Transceiver
AMU*
Buffer Box (optional)
Accessing Internet
Hub/Switch
Router
Hub/Switch
*AMU configured with
client bridging
function
Wired or Wireless
Connection
Internet
1.2.3
Form Multiple Cellular Coverages using Different Channels
Base Station
Channel 2
Channel 3
Wired or Wireless
Connection
Client
Station
Client
Station
Channel 1
Internet
Wired or Wireless
Connection
Client
Station
1.2.4 Feeding the Wireless Base Stations with Wired Connections
1.2.4.1 Single Wired-backbone Feeding Link
Ethernet Interface
Service
Provider
Wireless
Base Station
Wireless
Base Station
Wired Backbone
Wireless
Base Station
1.2.4.2 Multiple Wired-backbone Feeding Links
Service
Provider
Wired Backbone Links
Ethernet
Interface
Wireless
Base Station
Ethernet
Interface
Wireless
Base Station
Wireless
Base Station
1.2.5
Feeding the Wireless Base Stations with Wireless Connections
1.2.5.1 Daisy-chained Wireless-backbone Feeding Link
Service
Provider
A irEZY
W ireless
Bridge
A irEZY
W ireless
Bridge
A irEZY
W ireless
Bridge
A irEZY
W ireless
Bridge
A irEZY
W ireless
Bridge
S w itch
S w itch
W ireless
Base Station
W ireless
Base Station
1.2.5.2 Multiple Wireless-backbone Feeding Links (All Base Stations Share the Bandwidth of One
AirEZY Bridge Transceiver)
Service
Provider
AirEZY
Wireless
Bridge
AirEZY
Wireless
Bridge
Wireless
Base Station
AirEZY
Wireless
Bridge
Wireless
Base Station
AirEZY
Wireless
Bridge
Wireless
Base Station
1.2.5.3 Multiple Wireless-backbone Feeding Links (Each Base Station is fed by the Dedicated
Bandwidth of an AirEZY Bridge Transceiver)
Service
Provider
AirEZY
Wireless
Bridge
AirEZY
Wireless
Bridge
Wireless
Base Station
AirEZY
Wireless
Bridge
AirEZY
Wireless
Bridge
Wireless
Base Station
AirEZY
Wireless
Bridge
AirEZY
Wireless
Bridge
Wireless
Base Station
Switch
10
2. Hardware Installation
2.1 The Hardware
2. 2 Installation
2.2.1
Installing the Base Station
Connect the Base Radio Transceiver and the AMU as illustrated in Sections 2.2.1.1 and 2.2.1.2.
Power up the AMU, the front panel power LED indicator should be RED, indicating “power on self test”
(POST) is in progress. After successful POST, the LED will turn to GREEN, indicating the unit is ready.
Next, power on the Base Radio Transceiver, the LED indicators on the front panel of the transceiver
should exhibit the following blinking patterns:
LED
Color
Light Blinking Pattern
ON
RED
Steady on
RX
GREEN
Steady on
TX
RED
On, when transmitting
LINK / NW
YELLOW
On/off slow blinking
If the yellow LED is showing a one long, one short blinking pattern, it indicates that the 10BaseT port on
the Radio Transceiver is not properly connected. Check your UTP cable connection between the
transceiver and the Access Management Unit (AMU) and make sure that the right cable is used.
When any one of the Client Station Transceiver served by the Base Station Transceiver is powered on
and the RF link is successfully established, the yellow LED on the Base Radio Transceiver will change to
a continuous flickering pattern.
2.2.1.1 Installing the Base Station when Single Base Radio Transceiver is used
RJ-45 10 Base T
Connector
RF Connector
RJ-45 10 Base T
Connector
Port B
Port A
To Antenna
2411EZYLINK-9-BST-AMU
2411EZYLINK-9-BST-TRX
Base Radio Transceiver
RF Cable
To Ethernet
Network
Access Management Unit
Straight-through
UTP Cable
Cross-over UTP Cable
for connecting to PC
Straight-through UTP cable
for connecting to Hub Switch or Router
11
2.2.1.2 Installing the Base Station when Multiple Base Radio Transceivers are used
RJ-45 10 Base T
Connector
RF Connector
Base Radio Transceiver
To Antenna
2411EZYLINK-9-BST-TRX
RJ-45 10 Base T
Connector
RF Cable
To Antenna
To Antenna
To Antenna
Port B
Port A
2411EZYLINK-9 -BST-TRX
2411EZYLINK-9 -BST-TRX
Sw
itc
2411EZYLINK-9 -BSTAMU
Access Management Unit
To Ethernet
Network
Cross-over UTP Cable
for connecting to PC
Straight-through UTP cable
for connecting to Hub Switch or Router
2411EZYLINK-9 -BST-TRX
Straight-through
UTP Cable
Cross-over UTP Cable
12
2.2.2
Installing the Client Station
Connect the Client Radio Transceiver and the Buffer Box, if used, as illustrated in Sections 2.2.2.1 and
2.2.2.2.
If a Buffer Box is used, power it on first. The front panel power LED indicator should be RED, indicating
“power on self test” (POST) is in progress. After successful POST, the LED will turn to GREEN, indicating
the unit is ready.
Then power on the Client Radio Transceiver, the LED indicators on the front panel of the transceiver
should exhibit the following patterns:
LED
Color
Light Blinking Pattern
ON
RED
Steady on
RX
GREEN
Steady on
TX
RED
On, when transmitting
LINK / NW
YELLOW
Continuous flickering
The continuously flickering yellow LED indicates that the RF link is successfully established between the
base and the client radio transceivers. If the yellow LED is showing a one long, one short blinking pattern,
it is an indication that the 10BaseT port on the transceiver is not properly connected. Check the UTP
cable connection between the transceiver and the Buffer Box, if one is used. Otherwise, check the UTP
cable link between the transceiver and the hub or the switch or the router or the computer). Make sure
that the right cable is used. If the yellow LED is showing a slow on and off blinking pattern, it is an
indication that the RF link is not successfully established. You need to check the RF cable connections
and the antenna alignment at both the Base and the Client Sites. You may also want to check if the Client
Radio Transceiver is configured with the same RF channel and security code as the Base Radio
Transceiver. If not, change the settings to make them the same. Please refer to Chapters 3 and 4 for
how to check and change the RF channel and the security code settings.
2.2.2.1 Installing the Client Station when Buffer Box is used
RJ-45 10 Base T
Connector
RJ-45 10 Base T
Connector
RF Connector
Port B
To Antenna
2411EZYLINK-9 -CPEBFB
Buffer Box
2411EZYLINK-9 -CPETRX
Client Radio Transceiver
RF Cable
Port A
Straight-through
UTP Cable
To Ethernet
Network
Cross-over UTP Cable
for connecting to PC
Straight-through UTP cable
for connecting to Hub Switch or Router
13
2.2.2.2 Installing the Client Station without using Buffer Box
RJ-45 10 Base
Connecto
RF
To
2411EZYLINK-9-CPE-
TRX
RF
To
Networ
Straight-through UTP
for connecting to
Cross-over UTP
for connecting to Hub Switch or
Note
Ferrite beads are included in the product package. When installing the equipment, please clip the ferrite bead around
the category-5 cable and the DC power cable to ensure the EMI emission complies with the FCC regulation.
14
3. Configuring the AMU
Note: The following terms are used interchangeably in this chapter:
2411EZYLINK-9 and AirEZY,
Base Radio Transceiver and Server,
Client Radio Transceiver and Client.
Features and Theory of Operation of AMU
The AMU supports the following features:
•
Multiple (up to 4) AirEZY servers flow control
Due to the discrepancy of the transmission speed for Ethernet port (10 MB) and transceiver port
(1.2 MB to 5.5 MB range) in the AirEZY products, a flow control mechanism is needed to
overcome possible traffic overflow of AirEZY product. The AMU software implements the OTC
proprietary flow control protocol.
•
SNMP Support
The AMU product contains an embedded SNMP agent. It supports standard MIBs (MIB I and II),
as well as OTC proprietary MIB for provisioning and monitoring the AirEZY product.
•
Web Based Provisioning and Monitoring
It is an embedded web server utility that allows a user to use browser to configure and monitor
AirEZY servers and clients. Currently, it supports a single concurrent user.
Using the web based configuration and monitor utilities, the information about the sub-network
within the control of an AMU is just a click away.
•
Ethernet bridging
When bridging option is selected, AMU supports IEEE 802.3 bridging. It is software-enabled
bridging. The bridging software learns the surrounding MAC addresses and builds an address
database. An address in the database includes the interface media that the device uses to
associates with the AMU. The AMU uses the database to forward packets from one interface to
another.
If a packet with unknown MAC address is received, the bridging software broadcast an Address
Resolution Protocol (ARP) request message out to all the interfaces except over the interface on
which the packet is received. If no response is received, the packet is discarded. If an ARP
response is received, the bridging software updates its address database and forwards the
packet.
An entry in the address table is removed if the address (as a source or destination) is not used for
a specific period of time. However, when AMU transmits or receives data from the address, the
address is added to the database again.
•
802.1d Spanning Tree Support
The AMU supports IEEE 802.1d Spanning Tree Protocol (STP) when bridging option is selected.
The STP is a standard algorithm used to create a loop-free network topology with only one path
between every LAN. This is the shortest path for the AMU to each LAN. If a path within the tree
fails, a new path is calculated and added to the tree. The packet forwarding uses the path
calculated by the spanning tree algorithm.
•
Client Bridging
15
If a single server is used, the AMU also supports client bridging provided the option is selected.
The client bridging allows clients under the same server to communicate with each other based
on MAC address via an AMU.
With Ethernet bridging, the packet forwarding only happens between the two Ethernet ports in the
AMU (i.e.: packets received from a interface would not be transmitted over the same interface,
even the address table indicates that the destination is on the same Ethernet port). With client
bridging, the bridging software compares the destination address against its address table. If a
match is found, the packet would be forwarded to the Ethernet port regardless whether the
original message is received on the same port.
3.1
Default Configuration of AMU
Upon factory test and before shipment, each AMU has been configured by the following default values:
•
•
•
•
3.2
Software bridging is turned on with Spanning Tree enabled.
Ethernet A (EthA) is configured with
o IP address 192.168.169.170
o IP mask 255.255.255.0
Ethernet 1 (EthB) is configured with no IP address
Default Gateway IP address: 192.168.169.171
Modifying the Default AMU Configuration
There are two ways to modify the default configuration of AMU: using a Web based configuration utility
embedded in the AMU, or using an external SNMP manager (such as HP Open View).
The following parameters may be configured via either a Web interface or an SNMP manager:
•
•
•
•
•
IP address for EthA
IP network mask for EthA
Default gateway IP address
Disable/Enable Bridging /Routing
Disable/Enable Spanning Tree Protocol
After modification of above items, the AMU must be rebooted in order for the modification to take place.
The rebooting process may also be initiated via a Web or a SNMP manager interface.
Note: Client bridging does not work in the multiple base radio transceiver environment. The multibase radio transceiver environment requires a Ethernet switch between base radio transceivers
and AMU, and the Ethernet switch will not forward packets to the AMU if clients associated with
the same base radio transceiver try to communicate with each other.
3.3 Configuring AMU using Web Browser
When configuring AMU using Web based configuration utility, an external device (such as a PC or
workstation) equipped with an Ethernet port is needed. An Ethernet crossover cable should be used to
connect the PC to the AMU Ethernet port A (EthA). A general-purpose browser (Netscape or Internet
Explore) should be used to configure the unit.
When configuring the AMU for the first time (AMU with default manufacture setting), the steps described
below should be used:
Step 1: The device (a PC or a workstation) must be configured with IP address in the
192.168.169.0 network (such as 192.168.169.171). Don’t use 192.168.169.170 since it is already
used by the AMU.
16
Step 2: Use the EthA IP address as the URL in the browser:
Type in http://192.168.169.170 , and hit the Return key.
Step 3: The browser will prompt for user id (pre-configured default id is airezy)and password (preconfigured default password is adairezy). Once correct user id and password is received, the
browser displays all the information related to the AMU and associated base radio transceivers.
The factory defaulted user for configuration option “AirEZY control” is a READ user with user id
“monitor” and password “monitor1”. For other details, please see Section 4.1.
Step 4: In the browser
•
•
•
•
•
Double click the value to be modified (IP address, IP mask, Gateway IP,
Bridging/routing Protocol, Spanning Tree Protocol).
Provide the correct information in the input field.
Submit it by clicking the submit button.
Verify the changes by a retrieval operation.
Reboot the AMU by clicking Reboot button to allow the newly modified value to
take effect.
Note: The user must remember the new IP address/IP mask for EthA for future reference since
there is no other easy way to obtain this information (A console terminal must be used to recover
the IP address and IP mask information. A console terminal is not a standard device associated
with an Access Management Unit).
3.4 Configuring AMU using an External SNMP Manager
When configuring the AMU using an SNMP manager, the SNMP manager station must be configured with an
IP address in the 192.168.169.0 network range (such as 192.168.169.171) and connect to the AMU via EthA
port (marked as the “A” RJ-45 port on the AMU back panel).
OTC enterprise specific (2874) MIB should be obtained. The SNMP manager shall use SNMP SET
command to modify IP address, IP network mask, or gateway IP address (OID enterprise.2874.1.3.1.0,
enterprise.2874.1.3.2.0, enterprise.2874.1.3.5.0). After modification, an SNMP SET command to reboot the
AMU is required to allow the new value to take effect. The OID to reboot AMU is enterprise.2874.1.5.4.0.
Note: To ensure the IP address and network mask is configured properly, it is recommended to verify it by
retrieving the information prior to rebooting the AMU.
3.5 Telnet
The AMU software is designed in such a way that a local console is unnecessary to operate an AMU. If
the need to login to the AMU arises, a telnet session shall be used.
The AMU supports two types of telnet sessions.
telnet ip_address 513
telnet ip_address
3.5.1
telnet ip_address 513
When the command “telnet ip_address 513” is entered, the user will be prompt with the following
message:
Please enter your choice:
17
0)
1)
2)
3)
4)
Display Configuration
Configure Bridge
Configure Router
Reboot AMU
Exit
This will allow telnet user to configure the AMU without using a browser or a SNMP manager.
If 0 is the input, the current AMU configuration is displayed.
If 1 is the input, a user will be prompt to input IP address and network mask for EthA, and default gateway
IP address. The input shall use a.b.c.d notation for IP address.
If 2 is the input, a user will be prompted to input IP address and network mask for both EthA and EthB,
and default gateway IP address. The IP address format shall be a.b.c.d.
If 3 is the input, the AMU will perform a software reboot. It should be used after modification of AMU
configuration.
If 4 is entered, the telnet session will terminate.
3.5.2
telnet ip_address
When the command “telnet ip_address” is entered, the user will be prompt with the login prompt. Once
user inputs correct user id and password (usr id: root, password: 1q2w3e4r), user is logged into the AMU.
Since the AMU is designed as an embedded platform, there is only one class of users, i.e. , the “root”, that
can login.
3.6 Files Transfers to AMU
The AMU is configured with an FTP server. One way to copy a file into the AMU file system is to FTP a file.
User will simply issue the FTP AirEZY_AMU_IP_ADDRESS command on their host machine and use the root
account to log in.
Another way to achieve file transfer is to use UNIX remote copy command. However, a user can only login to
the AMU first, and issue a remote copy (rcp) command to copy files from a remote machine. This requires
that the remote machine must run UNIX.
18
4. Configuring, Monitoring the Base Radio Transceiver (the Server) and the Client
Radio Transceiver (the Client)
Note: The following terms are used interchangeably in this chapter:
2411EZYLINK-9 and AirEZY,
Base Radio Transceiver and Server,
Client Radio Transceiver and Client.
Similar to that for modifying the default configuration of the AMU, there are two approaches to configure and
monitor the AirEZY servers and clients. One is to use the web interface, and the other one is to use an
external SNMP manager.
When a browser or an external SNMP manager is used to configure and monitor AirEZY servers and clients,
the device containing the browser or SNMP manager must be connected to the AMU using EthA (marked A
under the RJ-45 connector).
The AirEZY products currently support Telnet utility and Command Interface (CI) utility to configure and
monitor the AirEZY products. However, both Telnet utility and CI utility are described in a different document,
and it is not the scope of this document.
4.1 Using a Browser
When using a browser to configure or monitor AirEZY servers and clients, the following URL should be used.
http://ip_address
Where: ip_addres is the EthA IP address of AMU.
4.1.1
Administrative User Login
The first AMU screen prompts the user to enter the user id and password as well as the configuration option
for AirEZY Control or User Admin. The AirEZY Control option will allow user to configure and monitor AirEZY
configuration and performance. The User Admin option allows system administrator to set up user access to
AMU. The default configuration option is AirEZY Control.
19
There are two types of users defined: “ADMIN”, and “READ”. The ADMIN user has the privilege to view and
modify the AMU, the server and the client configurations. The ADMIN user also has the privilege to add,
modify, or delete users. The READ user may only view AMU, server and client configuration.
There are two default users configured with AMU: an ADMIN user, and a READ user. The ADMIN user is
assigned “airezy” as the user id, and “adairezy” as the password. The READ user id is “monitor”, and the
password is “monitor1”.
When an “ADMIN” type user choose “User Admin” on the above screen to login the AMU, the “Display Users”
screen will appear, as shown below. The user can then choose to “Add User” or “Delete User”. The
procedure is straightforward and self-explanatory. After such functions are accomplished, the Login button
should be clicked. This will bring back the regular login screen with “AirEZY control” as the default selection,
as in Figure 1.
4.1.2
Login for Configuration or Monitoring
Both types of users “ADMIN”, and “READ” are allowed to login under “AirEZY Control”. Only the “ADMIN” user
has the privilege to reconfigure and modify AMU, and server and client information table fields, as described
in the following Sections 4.1.3 through 4.1.6. The “READ” user can only look at the various tables.
20
Figure 1. Web Interface Login Screen
When Change Password button is clicked, the user will be requested to enter the old password and the new
password. The new password shall be entered twice to ensure the user entered correctly.
Figure 2. Password Modification Screen
21
Clicking the Submit button will update the password file in the AMU if both Password and the two New
Passwords are entered correctly, and the user will be prompt to login. If updating password operation is
unsuccessful, the user will be asked to re-enter all the fields.
4.1.3
Display Views for AMU and Servers
Once the correct user id and password are entered and AirEZY Control button is selected, the AMU web
interface presents a graphical representation of the AMU and Servers (Base Radio Transceivers).
Figure 3. Web Interface - AMU/Server Graphical Representations Screen
When double clicking the AMU icon in the figure above, the AMU related information is presented in the
tabular format, as shown in Figure 4. When double clicking on one of the server number, the network
view of that server and the associated clients will be presented as in Figure 5.
22
Figure 4. Web Interface - Detailed AMU Information Screen
The AMU Information table contains networking related configuration about the AMU. The Server List table
contains all the servers known to the AMU. The number of servers in the table could be 0 to 4. A user may
modify any field in the AMU information table by double clicking the value of that field; the user is prompted to
enter a valid value for the field. Once the correct value is entered, user may click the Submit button. User may
abort the modification by click the Cancel button. The Reboot AMU button is used to reboot the AMU. A user
will be prompted to confirm if this button is pushed.
The following table is a description of fields in the Detailed AMU Information.
Field Name
Bridging/Routing
Modifiable Description
Yes
It indicates that the AMU is used for bridging or routing. This filed
must contain the value of bridging or routing
Spanning Tree Protocol Yes
It must contain value “on” or “off”. “on” indicates that STP is
enabled.
Client Bridging
Yes
It indicates that whether AMU enables client to client
communication using the same server. It can only be turned on
or off in bridging mode (not routing). It shall not be used in the
multi-server environment.
IP Address (EthA)
Yes
It is used to configure Ethernet port IP address on the network
side. It must contain valid IP address in xxx.yyy.zzz.www format.
IP Net Mask (EthA)
Yes
It is used to configure Ethernet port IP mask on the network side.
It must contain valid IP mask in xxx.yyy.zzz.www format.
Default Gateway IP
Yes
It is used to construct a default route. If AirEZY receive a
packet and it does not know where to forward to, it will be
forwarded to the node specified by this IP address. It must
contain valid IP address in xxx.yyy.zzz.www format.
Note: It is recommended that the default gateway is the node
connected to the AirEZY AMU on the network side.
Server List
No
It contains 0 to 4 servers transceiver IDs known to the AirEZY
AMU. User may select a server by high lighting the transceiver
ID
23
and clicking Select Server button to view details of the server.
A user may modify any fields with modifiable property marked “yes” in the table. To change any of the
modifiable fields, double click the value of the field, the user is prompted to enter a valid value for the field.
Once the correct value is entered, user may click the Submit button. User may abort the modification by click the
Cancel button.
Note: In order to allow any of the IP address changes to take place, the AirEZY AMU must be rebooted.
4.1.4
Display AirEZY Server and Clients Information and Modify the Settings
Figure 5 Web Interface – Server/Client Graphical Representation Screen
When double clicking the server icon in Figure 5 or performing Select Server operation in Figure 4, the detailed
information about the server should be displayed on the screen in the tabular format in Figure 6.
24
Figure 6. Web Interface – Detailed Server Information Screen
Certain fields in the server information table can be modified by double clicking that field. One can also double
clicking a particular client number in the client list to view the detailed information about that client, as shown in
Figure 7.
The Set Auto Monitor button is used to activate monitoring a server unit statistics automatically. The auto
monitor feature is deactivated after screen changes from Detailed Server Information to any other screen
occurred.
The following table describes the fields contained in the Detailed Server Information Screen.
Field Name
Transceiver ID
Firmware Version
Module Type
Modifiable
No
No
No
Channel Number
Yes
Security Code
Yes
Client Count
No
Total Packets (In)
No
Total CRC Errors (In)
No
Total Checksum Errors
(in)
Total OK Packets (in)
No
No
Description
It is a unique ID assigned by the manufacture for the server unit.
It indicates the firmware revision number of the server unit.
It indicates the unit type configured for the unit. It should always
be S (server).
It indicates the channel number that the server is using to
communicate with its client. It must have a value in the range 1
to 12.
It indicates the security code used in the transmission of packet.
It is used to prevent unauthorized client to communicate with the
server.
It indicates the number of clients known by the server. It must be
within the range of 0 to 128.
It indicates the number of packets received by the server unit
since last retrieval.
It indicates the number of CRC errors when receiving data
encountered by the server unit since last retrieval.
It indicates the number of checksum errors when receiving data
encountered by the server unit since last retrieval.
It indicates the number of packets without error by the server unit
since last retrieval.
25
Total Octets Received
(in)
Total ACK Packets
(out)
Total Retransmission
(out)
No
No
No
It indicates the number of octets received by the server unit since
last retrieval.
It indicates the number of acknowledgement packets sent out by
the server unit since last retrieval.
It indicates the number of packet retransmissions sent out by the
server unit since last retrieval.
A user may modify any fields with modifiable property marked “yes” in the table. To change any of the modifiable
fields, double click the value of the field, the user is prompted to enter a valid value for the field.
Once the
correct value is entered, user may click the Submit button. User may abort the modification by click the Cancel
button.
The Modify Client List button is used to modify the whole client list. A user may add, and delete client in the list.
Additionally, the desired transmission bandwidth of any client can be specified and modified here.
After clicking the Modify Client List button in Figure 6, the “client list” screen appears in the browser. Each client
has three corresponding fields allowed to be modified.
Figure 7. Web Interface – Detailed Client List Screen
Client List table description:
Field Name
Modifiable Description
Transceiver ID
Yes
It is a unique ID assigned by the manufacture for the client unit.
Adding the client ID here allows the server to communicate with
the client.
BW
Yes
It indicates the bandwidth allocation for the client. Currently, this
bandwidth allocation is used to indicate number of polling slots
reserved for the client. Allowable values are: 1 to 128.
Priority
Yes
0 to 9. 9 has the highest priority. Currently, this field is not used.
Once modification is done, a user may click the Submit button to allow the client list send to the server, or click
the Cancel button to abort the request.
26
A user may select a client in the client list shown in Fig. 6 and click the Select Client button, or double click a
client icon in Figure 5, the detailed information about the client is also displayed.
Figure 8. Web Interface – Detailed Client Information Screen
The following table describes the fields contained in the Detailed Client Information Screen.
Field Name
Transceiver ID
Firmware Version
Module Type
Modifiable
No
No
No
Channel Number
Yes
Security Code
Yes
Total Packets (In)
No
Total CRC Errors (In)
No
Total Checksum Errors
(in)
Total OK Packets (in)
No
Total Octets Received
(in)
Total ACK Packets
(out)
Total Retransmission
No
No
No
No
Description
It is a unique ID assigned by the manufacture for the client unit.
It indicates the firmware revision number of the client unit.
It indicates the unit type configured for the unit. It should always
be C (Client).
It indicates the channel number that the server is using to
communicate with its server. It must have a value in the range 1
to 12.
It indicates the security code used in the transmission of packet.
It is used to prevent unauthorized client to communicate with the
server.
It indicates the number of packets received by the client unit
since last retrieval.
It indicates the number of CRC errors when receiving data
encountered by the client unit since last retrieval.
It indicates the number of checksum errors when receiving data
encountered by the client unit since last retrieval.
It indicates the number of packets without error by the client unit
since last retrieval.
It indicates the number of octets received by the client unit since
last retrieval.
It indicates the number of acknowledgement packets sent out by
the client unit since last retrieval.
It indicates the number of packet retransmissions sent out by the
27
(out)
client unit since last retrieval.
A user may modify any fields with modifiable property marked “yes” in the table. To change any of the modifiable
fields, double click the value of the field; the user is prompted to enter a valid value for the field. Once the
correct value is entered, user may click the Submit button. User may abort the modification by click the Cancel
button.
In the server (Figure 6) or client (Figure 8) table, only the following fields can be modified by double
clicking the individual one:
Channel Number
Security Code
When double clicking the Channel Number field, the user is prompted to input a new channel number
(range from 1 to 12). By clicking the submit button, the AirEZY unit will be instructed to use the new
channel number after next AirEZY reboot.
When double clicking the Security Code field, the user is prompted to input a new security code. By click
the submit button, the AirEZY unit starts to use the new security code after next AirEZY reboot.
The following rules must be observed when modifying the channel number and/or the security code for
clients and associated server:
1)
2)
Modifications to clients and its server must be identical.
Clients must be rebooted prior to rebooting the server.
If the above rules are not followed, the AirEZY link between server and clients will be lost.
28
4.2 Using an External SNMP Manager
4.2.1
Access to SNMP Agent
The SNMP agent, by default, is not configured to interact with any other external SNMP manager for security
reasons. If an external SNMP manager is desired, the file /etc/snmp/snmpd.conf must be modified to include
the host IP address of the SNMP manager.
Example of /etc/snmp/snmpd.conf
####
# First, map the community name (COMMUNITY) into a security name
# (local and mynetwork, depending on where the request is coming
# from):
sec.name source
community
com2sec local localhost
public
com2sec server 192.168.169.171 public
com2sec theworld default
public
####
# Second, map the security names into group names:
sec.model sec.name
group MyRWGroup any local
group MySVGroup any server
group MyROGroup any theworld
####
# Third, create a view for us to let the groups have rights to:
incl/excl subtree
view all included .1
mask
80
# Finally, grant the 2 groups access to the 1 view with different
# write permissions:
context sec.model sec.level prefix read write notif
access MyROGroup ""
any
noauth 0
none none none
access MySVGroup ""
any
noauth 0
all all none
access MyRWGroup ""
any
noauth 0
all all none
To allow a SNMP host to interact with AMU SNMP agent, the IP address 192.168.169.171 shall be replaced
with another the SNMP manager host IP address.
4.2.2
Manipulating AMU MIBs
There are a few important concepts that an external SNMP manager needs to know in order to manage AMU
properly:
1) Server Discovery Object
•
The SNMP GET operation has to be performed
i. If it is the first time for the SNMP session to communicate with the agent.
ii. If number of AirEZY servers managed by the AMU has changed.
29
2) Server Object
•
Once Server Discovery object has been retrieved (via SNMP GET operation), server objects
may be manipulated via GET, SET operations.
3) Polling List Objects
• After a server object has been retrieved, the polling list of the server may be retrieved and
modified. The polling list returned from Get Polling List operation has the following format:
Byte Offset
13
19
•
•
•
(n-1)*12+1
(n-1)*12+6
(n-1)*12+7
(n-1)*12+8
Field Name
Count
Transceiver ID 1
State 1
Priority 1
Bandwidth Allocation 1
Transceiver ID 2
State 2
•
•
•
Transceiver ID n
State n
Priority n
Bandwidth Allocation n
Size in Byte
Where
Count: 1 byte decimal
Indicating the number of clients (n) in the polling list. It may have valid value 0 to 128. 0
indicates that there is no client in the server’s polling list.
Transceiver ID: 6 bytes hex decimal
Uniquely identify a client. The valid value of this field is any hex decimal value. There may
be a maximum of 128 Transceiver ID/State pair in the polling list.
State: 1 byte decimal
The Transceiver ID and State is paired field. The State field following the Transceiver ID
Identifies whether polling of the client is active or not. If the server is actively polling the
client, the state field shall have a value of 1. Otherwise, this field shall have a value of 0.
Priority: 1 byte decimal
The priority of Transceiver ID within the polling list in case of the bandwidth is over
subscribed (this field is not used currently).
Bandwidth Allocation: 4 byte decimal
The number of polling slots reserved for the Transceiver ID. The more slots a
Transceiver ID is reserved for, the more chances the transceiver ID is polled. . A total of
128 polling slots are available within a server. Anything greater than 128 is ignored.
30
•
Polling list and server has one to one relationship. That is to say, server instance n contains
the polling list represented by polling list instance n (where n has a range of 1 to 4).
•
When perform SNMP SET operation on a polling list, the SNMP manager must send the
updated and complete polling list in the above format in order for the server to poll the clients
properly.
4) Client Object
•
After a polling list object has been retrieved, the clients on the polling list may be manipulated
via SNMP GET, SET operations.
•
When performing an operation on a client, the instance id the client must be calculated using
the following formula:
(Server Instance ID –1 ) * 128 + Client ID
Where:
Server Instance ID is used to indicate the server that the client is communicating to.
Client ID is the position of the client TRANSCEIVER ID and state pair in the polling list.
Example 1: Polling List under Server Instance 1 is defined as the following:
020011223344550166778899001101
To perform operation on client RFID=001122334455, the Client Instance ID 1 (apply the
formula: (1-1)*128+1) shall be used. To perform operation on client RFID = 667788990011,
the Client Instance ID 2 shall be used.
Example 2: Polling List under server instance 2 is defined as the following:
0111223344556601
To perform operation on the client, the instance id 129 (apply the formula: (2-1)*128+1) shall
be used.
31
4.3
AMU Web User Administration
The AMU provides web user administration utility in addition to configuration and monitoring capability of
AIREZY server and clients. This utility allows a system administrator to add users, and delete users.
To login web user administration utility, the User Admin button must be clicked in the User Login Screen
(Figure 1. Web Interface Login Screen). Once the correct user id and password is entered, the administrator
is presented with the following screen (Display Users):
Figure 9.
Web Interface – Display Users
After selecting a user and clicking OK button, the user information is displayed.
To add a user to the system, click the Add User button on the side bar and the following screen will be
presented:
32
Figure 10. Web Interface – Add a User
Once Submit button is clicked after the form is filled out correctly, the information will be saved.
When deleting a user is required, the Delete User button must be used on the side bard.
Figure 11. Web Interface – Delete a User
33
Once a user is selected by high-lighting, clicking OK button will erase the highlighted user information from
the AMU.
Login button on the side bar allows a user to restart the login process.
34
5. Product Specifications
5.1 Base Station Specifications
Base Radio Transceiver
Operating frequency range:
2.4 - 2.483 GHz (US, China, Europe)
2.4 - 2.497 GHz (Japan)
Available Channel Central Frequencies:
2.412, 2.417, 2.422, 2.427, 2.432, 2.437, 2.442, 2.447, 2.452, 2.457, 2.462 GHz
(U.S., Europe and China)*
2.412, 2.417, 2.422, 2.427, 2.432, 2.437, 2.442, 2.447, 2.452, 2.457, 2.462,
2.484 GHz (Japan)*
*For roaming applications: 2.422, 2.442, 2.462 GHz (U.S., Europe and China)
2.422, 2.442, 2.462, 2484 GHz (Japan)
Number of Simultaneously
Operable Channels
Data Rate:
Modulation:
Spread Spectrum
Multiple Access Protocol
Output Power:
3 (US, China, Europe)
4 (Japan)
11 Mbps
QPSK
Direct Sequence
Polling
100 mW max.
Access Management Unit
Bridging
Management Interface
MIBs
Software maintenance
Server Bridging, Client Bridging, Spanning Tree, Protocol Filtering
Web (http),SNMP
MIBI&II + OTC Proprietary
FTP, TELNET
35
5.2 Client Station Specifications
Client Radio Transceiver
Operating frequency range:
2.4 - 2.483 GHz (US, China, Europe)
2.4 - 2.497 GHz (Japan)
Available Channel Central Frequencies:
2.412, 2.417, 2.422, 2.427, 2.432, 2.437, 2.442, 2.447, 2.452, 2.457, 2.462 GHz
(US, Europe, China)*
2.412, 2.417, 2.422, 2.427, 2.432, 2.437, 2.442, 2.447, 2.452, 2.457, 2.462,
2.484 GHz (Japan)*
*For roaming applications: 2.422, 2.442, 2.462 GHz (U.S., Europe and China)
2.422, 2.442, 2.462, 2484 GHz (Japan)
Number of Simultaneously
Operable Channels
Data Rate:
Modulation:
Spread Spectrum
Multiple Access Protocol
Output Power:
3 (US, China, Europe)
4 (Japan)
11 Mbps
QPSK
Direct Sequence
Polling
100 mW max
Buffer Box
Bridging
Flow Control
Server Bridging, Spanning Tree, Protocol Filtering
OTC proprietary protocol, providing flow control between Client Radio
Transceiver and Network Backbone
36
37

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