Allied Telesis AT-TQ2450 User Manual

AT-TQ2450
Enterprise-class Wireless Access Point with IEEE802.11a/b/g/n Dual Radio
Management Software User’s Guide
613-001821 Rev. A
Copyright 2013 Allied Telesis, Inc.
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Copyright (c) [dates as appropriate to package] by The Regents of the University of California - All rights reserved. Copyright (c) 2000-2003 by Intel Corporation - All rights reserved. Copyright (c) 1997-2003, 2004 by Thomas E. Dickey <dickey@invisible-island.net> - All rights reserved. Copyright (c) 2001-2009 by Brandon Long (ClearSilver is now licensed under the New BSD License.) Copyright (c) 1984-2000 by Carnegie Mellon University - All rights reserved. Copyright (c) 2002,2003 by Matt Johnston - All rights reserved. Copyright (c) 1995 by Tatu Ylonen <ylo@cs.hut.fi> - All rights reserved. Copyright 1997-2003 by Simon Tatham. Portions copyright by Robert de Bath, Joris van Rantwijk, Delian Delchev, Andreas Schultz, Jeroen Massar, Wez Furlong, Nicolas Barry, Justin Bradford, and CORE SDI S.A. Copyright (c) 1989, 1991 by Free Software Foundation, Inc. (GNU General Public License, Version 2, June 1991). Copyright (c) 2002-2005 by Jouni Malinen <jkmaline@cc.hut.fi> and contributors. Copyright (c) 1991, 1999 by Free Software Foundation, Inc. (GNU Lesser General Public License, Version 2.1, February 1999). Copyright (c) 1998-2002 by Daniel Veillard - All rights reserved. Copyright (c) 1998-2004 by The OpenSSL Project - All rights reserved. Copyright (c) 1995-1998 by Eric Young (eay@cryptsoft.com) - All rights reserved.
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Allied Telesis, Inc. reserves the right to make changes in specifications and other information contained in this document without prior written notice. The information provided herein is subject to change without notice. In no event shall Allied Telesis, Inc. be liable for any incidental, special, indirect, or consequential damages whatsoever, including but not limited to lost profits, arising out of or related to this manual or the information contained herein, even if Allied Telesis, Inc. has been advised of, known, or should have known, the possibility of such damages.

Contents

Preface ............................................................................................................................................................11
Safety Symbols Used in this Document ........................................................................................................... 12
Contacting Allied Telesis ..................................................................................................................................13
Chapter 1: Overview ...................................................................................................................................... 15
Features ...........................................................................................................................................................16
Management Modes and Methods ...................................................................................................................17
Starting a Management Session on the Access Point...................................................................................... 18
Starting the Initial Management Session on the Access Point ......................................................................... 19
Starting the Initial Management Session with a Direct Connection............................................................20
Starting the Initial Management Session without a DHCP Server .............................................................20
Starting the Initial Management Session with a DHCP Server ..................................................................21
Using the Management Menus and Windows ..................................................................................................22
Web Browser Menus..................................................................................................................................22
Saving Your Changes ................................................................................................................................ 24
Logging Off.................................................................................................................................................24
Chapter 2: Basic Settings Menu ................................................................................................................... 25
Displaying Basic Information ............................................................................................................................ 26
Changing the Manager’s Login Name and Password ......................................................................................28
Changing the System Name, Contact, and Location........................................................................................ 29
Chapter 3: Manage Menu ..............................................................................................................................31
Assigning a Static IP Address to the Access Point...........................................................................................32
Assigning a Dynamic IP Address from a DHCP Server to the Access Point.................................................... 34
Setting VLAN IDs..............................................................................................................................................35
Management VLAN ID ............................................................................................................................... 35
VLAN ID for Untagged Traffic ....................................................................................................................35
Enabling or Disabling Broadcast Ping Replies .................................................................................................36
Setting the Country Setting...............................................................................................................................37
Configuring Basic Radio Settings .....................................................................................................................39
Configuring the Radio Settings.........................................................................................................................42
Configuring Virtual Access Points .................................................................................................................... 54
No Security................................................................................................................................................. 57
IEEE 802.1x Security .................................................................................................................................57
Static WEP.................................................................................................................................................59
WPA Enterprise..........................................................................................................................................62
WPA Personal............................................................................................................................................65
Managing Wireless Distribution System Bridges.............................................................................................. 67
Configurations of WDS Bridges .................................................................................................................67
Radio.......................................................................................................................................................... 69
Radio Mode................................................................................................................................................69
Radio Channel ...........................................................................................................................................69
VAP0...........................................................................................................................
Encryption ..................................................................................................................................................70
Guidelines ..................................................................................................................................................70
Preparing the Access Point for the WDS Bridge........................................................................................71
............................... 69
5
Contents
Configuring the WDS Bridge ..................................................................................................................... 72
Static WEP ................................................................................................................................................ 74
WPA Personal ........................................................................................................................................... 75
Configuring the MAC Address Filter ................................................................................................................ 77
Generating Event Messages for Unknown Access Points ............................................................................... 80
Enabling Event Messages for Unknown Access Points ............................................................................ 80
Disabling Event Messages for Unknown Access Points ........................................................................... 82
Configuring the Access Point for the Optional AT-UWC Program ................................................................... 83
Enabling the Controller Client.................................................................................................................... 83
Disabling the Controller Client ................................................................................................................... 86
Chapter 4: Cluster Menu .............................................................................................................................. 87
Overview .......................................................................................................................................................... 88
Planning the Cluster......................................................................................................................................... 95
Creating or Adding Access Points to a Cluster ................................................................................................ 96
Managing the Access Points of the Cluster ..................................................................................................... 99
Removing an Access Point from a Cluster .................................................................................................... 100
Viewing the Wireless Clients of the Cluster ................................................................................................... 101
Using Automatic Channel Assignments ......................................................................................................... 103
Enabling Automatic Channel Assignments.............................................................................................. 103
Disabling Automatic Channel Assignments............................................................................................. 106
Viewing the Neighboring Access Points of the Cluster .................................................................................. 107
Chapter 5: Status Menu .............................................................................................................................. 111
Viewing the Associated Clients of an Access Point ....................................................................................... 112
Viewing Event Messages ............................................................................................................................... 114
Viewing System Event Messages ........................................................................................................... 115
Configuring the Event Log ....................................................................................................................... 117
Configuring the Syslog Client .................................................................................................................. 118
Disabling the Syslog Client...................................................................................................................... 119
Viewing Neighboring Access Points .............................................................................................................. 120
Displaying the IP Addresses of AT-UWC Programs ...................................................................................... 123
Displaying Statistics ....................................................................................................................................... 124
Viewing Basic IP and Radio Information ........................................................................................................ 128
Chapter 6: Services Menu .......................................................................................................................... 129
Configuring Quality of Service ....................................................................................................................... 130
Configuring SNMPv1 and v2c ........................................................................................................................ 137
Enabling or Disabling the LEDs ..................................................................................................................... 144
Configuring the HTTP Server......................................................................................................................... 145
Enabling the HTTP Server....................................................................................................................... 145
Disabling the HTTP Server...................................................................................................................... 146
Configuring the HTTPS Server ...................................................................................................................... 147
Enabling the HTTPS Server .................................................................................................................... 147
Disabling the HTTPS Server ................................................................................................................... 148
Configuring the Maximum Number of Active Management Sessions............................................................ 149
Configuring the Management Session Timer.......................................................................................
.......... 150
Manually Setting the Date and Time .............................................................................................................. 151
Setting the Date and Time with the Network Time Protocol Client ................................................................ 153
Chapter 7: Maintenance Menu ................................................................................................................... 155
Restoring the Default Settings to the Access Point ....................................................................................... 156
Downloading the Configuration from the Access Point to Your Computer..................................................... 158
Restoring a Configuration to the Access Point .............................................................................................. 159
Rebooting the Access Point ........................................................................................................................... 160
Enabling or Disabling the Reset Button ......................................................................................................... 161
Switching the Primary and Secondary Management Software Images ......................................................... 162
Uploading New Versions of the Management Software to the Access Point................................................. 164
6

Figures

Figure 1: Log On Window................................................................................................................................ 18
Figure 2: Horizontal Menus ............................................................................................................................. 22
Figure 3: Vertical Menus.................................................................................................................................. 23
Figure 4: Dropdown Menus ............................................................................................................................. 23
Figure 5: Provide Basic Settings Window........................................................................................................ 26
Figure 6: Modify Ethernet (Wired) Settings Window........................................................................................ 32
Figure 7: Modify Wireless Settings Window .................................................................................................... 37
Figure 8: Modify Radio Settings Window......................................................................................................... 43
Figure 9: Modify Virtual Access Point Settings Window .................................................................................. 56
Figure 10: 802.1x Authentication for VAPs...................................................................................................... 57
Figure 11: Static WEP Encryption for VAPs .................................................................................................... 59
Figure 12: WPA Enterprise for VAPs............................................................................................................... 62
Figure 13: WPA Personal for VAPs................................................................................................................. 65
Figure 14: WDS Bridge Used to Connect LAN Segments............................................................................... 67
Figure 15: WDS Bridge Used to Extend a Network......................................................................................... 67
Figure 16: Supported Configurations of WDS Bridges .................................................................................... 68
Figure 17: Invalid Loop Configuration of Access Points .................................................................................. 69
Figure 18: Invalid Loop Configuration of Access Points to a Wired Network Device ...................................... 69
Figure 19: Configure WDS Bridges to Other Access Points Window .............................................................. 72
Figure 20: Remote Address List ...................................................................................................................... 73
Figure 21: Static WEP on WDS Bridges.......................................................................................................... 74
Figure 22: WPA Personal on WDS Bridges .................................................................................................... 75
Figure 23: Configure MAC Filtering of Client Stations Window ....................................................................... 78
Figure 24: Event Message for Unknown Access Points.................................................................................. 80
Figure 25: Configure Pre-Configured Rogue AP Window ............................................................................... 81
Figure 26: Configure Managed Access Point Parameters Window................................................................. 83
Figure 27: Manage Access Points in the Cluster Window ............................................................................... 96
Figure 28: Active Cluster in the Manage Access Points in the Cluster Window .............................................. 98
Figure 29: Manage Sessions Associated with the Cluster Window............................................................... 101
Figure 30: Automatically Manage Channel Assignments Window ................................................................ 103
Figure 31: Automatically Manage Channel Assignments Window - Automatic Channel Assignment
Enabled ......................................................................................................................................................... 104
Figure 32: View Neighboring Access Points Window ...............................................................................
Figure 33: Neighbor Details........................................................................................................................... 108
Figure 34: View List of Currently Associated Client Stations......................................................................... 112
Figure 35: View Events Generated by this Access Point Window................................................................. 116
Figure 36: View Neighboring Access Points Window .................................................................................... 120
Figure 37: Displaying View List of Managing Switch IP Addresses and Base IP Port Obtained
via DHCP....................................................................................................................................................... 123
Figure 38: Status Table in the View Transmit and Receive Statistics for this Access Point Window............ 124
Figure 39: Transmit Statistics Table of the View Transmit and Receive Statistics for this Access
Point Window................................................................................................................................................. 125
Figure 40: Receive Statistics Table of the View Transmit and Receive Statistics for this Access
Point Window................................................................................................................................................. 126
Figure 41: View Settings for Network Interfaces Window.............................................................................. 128
..... 107
7
List of Figures
Figure 42: Modify QoS Queue Parameters.................................................................................................... 131
Figure 43: SNMP Configuration Window ....................................................................................................... 138
Figure 44: Control LEDs Window................................................................................................................... 144
Figure 45: Configure Web Server Settings Window....................................................................................... 145
Figure 46: Disable HTTP Server Prompt ....................................................................................................... 146
Figure 47: Generate SSL Certificate Prompt ................................................................................................. 147
Figure 48: Disable HTTPS Server Prompt ..................................................................................................... 148
Figure 49: Modify How the Access Point Discovers the Time Window - Manually Setting the Date
and Time ........................................................................................................................................................ 151
Figure 50: Daylight Savings Time Fields ....................................................................................................... 152
Figure 51: Modify How the Access Point Discovers the Time Window - Configuring the NTP Client............ 153
Figure 52: Manage this Access Point’s Configuration Window...................................................................... 157
Figure 53: Manage Firmware Window ........................................................................................................... 162
8

Tables

Table 1. Review Description of this Access Point .......................................................................................... 27
Table 2. Modify Wireless Settings Window .................................................................................................... 40
Table 3. Modify Radio Settings Window ......................................................................................................... 44
Table 4. IEEE 802.1x ...................................................................................................................................... 57
Table 5. Static WEP ....................................................................................................................................... 59
Table 6. WPA Enterprise ................................................................................................................................ 63
Table 7. WPA Personal .................................................................................................................................. 65
Table 8. Available Encryption Settings on WDS Bridges ............................................................................... 70
Table 9. Static WEP on WDS Links ................................................................................................................ 74
Table 10. WPA Personal on WDS Links ........................................................................................................ 76
Table 11. Shared and Non-shared Parameters on the Access Points in a Cluster ........................................ 88
Table 12. Manage Sessions Associated with the Cluster Window ............................................................... 101
Table 13. Current Channel Assignments ...................................................................................................... 104
Table 14. Channel Reassignment Parameters ............................................................................................. 105
Table 15. View Neighboring Access Points Window .................................................................................... 108
Table 16. Neighbor Details Window ............................................................................................................. 109
Table 17. View List of Currently Associated Client Stations Window ........................................................... 112
Table 18. Event Messages Table ................................................................................................................. 116
Table 19. Neighboring Access Point Settings Window ................................................................................. 120
Table 20. Status Table Information .............................................................................................................. 125
Table 21. Transmit Statistics Table .............................................................................................................. 126
Table 22. Receive Statistics Table ............................................................................................................... 127
Table 23. Modify QoS Queue Parameters Window ...................................................................................... 131
Table 24. SNMP ........................................................................................................................................... 139
9
List of Tables
10

Preface

This guide explains how to configure the AT-TQ2450 Wireless Access Point and the 2.4 GHz and 5 GHz radios with the web browser management windows. This preface contains the following sections:
“Safety Symbols Used in this Document” on page 12
“Contacting Allied Telesis” on page 13
11
Preface
Note
Caution
Warning
Warning

Safety Symbols Used in this Document

This document uses the following conventions.
Notes provide additional information.
Cautions inform you that performing or omitting a specific action may result in equipment damage or loss of data.
Warnings inform you that performing or omitting a specific action may result in bodily injury.
Laser warnings inform you that an eye or skin hazard exists due to the presence of a Class 1 laser device.
12

Contacting Allied Telesis

If you need assistance with this product, you may contact Allied Telesis technical support by going to the Support & Services section of the Allied Telesis web site at www.alliedtelesis.com/support. You can find links for the following services on this page:
24/7 Online Support — Enter our interactive support center to
search for answers to your product questions in our knowledge database, to check support tickets, to learn about RMAs, and to contact Allied Telesis technical experts.
USA and EMEA phone support — Select the phone number that
best fits your location and customer type.
Hardware warranty information — Learn about Allied Telesis
warranties and register your product online.
Replacement Services — Submit a Return Merchandise
Authorization (RMA) request via our interactive support center.
AT-TQ2450 Wireless Access Point User’s Guide
Documentation — View the most recent installation and user
guides, software release notes, white papers, and data sheets for your products.
Software Downloads — Download the latest software releases for
your managed products.
For sales or corporate information, go to www.alliedtelesis.com/ purchase.
13
Preface
14

Chapter 1

Overview

This chapter describes how to start the initial management session on the access point. This chapter contains the following sections:
“Features” on page 16
“Management Modes and Methods” on page 17
“Starting a Management Session on the Access Point” on page 18
“Starting the Initial Management Session on the Access Point” on
page 19
“Using the Management Menus and Windows” on page 22
15
Chapter 1: Overview

Features

The main features of the product are listed here:
Independent 2.4 and 5 GHz radios
IEEE 802.11a/b/g
IEEE 802.11n 2x2 MIMO chains with antenna diversity
Data rates of 300 Mbps for the 2.4 GHz radio and 300 Mbps for the
5 GHz radio
Wireless Distribution System (WDS) bridges
Access point clustering
Rogue access point detection
Multiple SSIDs
One 10/100/1000Base-T Ethernet port with Auto-Negotiation, auto
MDI/MDIX, and IEEE 802.3af Power over Ethernet (PoE)
MAC address filtering for wireless access security
Broadcast and multicast rate limiting
Virtual access points for multiple broadcast domains
DHCP client
RADIUS accounting with external RADIUS server
Network Time Protocol (NTP) client
Domain name server (DNS) client
IEEE 802.1x authentication
WPA-Personal and WPA-Enterprise with WPA, WPA2, TKIP, and
CCMP (AES) authentication and encryption
Static WEP encryption
HTTP and HTTPS web browser management
SNMPv1 and v2c management
Quality of Service
Event log
Syslog client
Table, wall, or ceiling installation
16

Management Modes and Methods

The access point has two management modes:
Stand-alone mode: Access points in the stand-alone mode are
managed independently of each other. To configure a unit in this mode, you have to know its IP address or domain name, and the username and password of the manager account. This is the default setting for the access point.
Cluster mode: The cluster management mode is intended for two
or more access points that have similar configuration settings. When you change the parameter settings on an access point in a cluster, your changes are automatically communicated to the other access points. This reduces the need for having to configure the units individually. For cluster instructions, refer to Chapter 4, “Cluster Menu” on page 87.
Here are the methods for managing the access point:
AT-TQ2450 Wireless Access Point User’s Guide
Web browser: The management software on the access point has
management windows for you to use with the web browser on your management workstations. They make it easy for you to configure all the parameter settings and features. The access point supports both non-secure HTTP and secure HTTPS management sessions. The default is HTTP. For instructions on how to enable or disable the HTTP and HTTPS servers on the access point, refer to “Configuring the HTTP Server” on page 145 and “Configuring the HTTPS Server” on page 147
AT-UWC Unified Wireless Controller program: This optional
program allows you to manage the access points from a central point. For instructions on how to configure the unit for the wireless controller program, refer to “Configuring the Access Point for the Optional AT-UWC Program” on page 83.
SNMPv1 and v2c: You may also use SNMP to manage some of
the parameter settings of the device. The MIB is available from the Allied Telesis web site. It should be noted that you can configure only a limited number of parameters on the access point with SNMP. To manage all the parameters, you must use a web browser or the optional AT-UWC program. For instructions on how to configure the unit for SNMP, refer to “Configuring SNMPv1 and v2c” on page 137. The default setting for SNMP is disabled. The product does not support SNMPv3.
17
Chapter 1: Overview
Note

Starting a Management Session on the Access Point

This section explains how to start a management session on the access from your management workstation. The procedure assumes that the access point has already been assigned an IP address. The address can be a static address that was manually assigned to the unit or it can be a dynamic address from a DHCP server.
If the access point has not been assigned an IP address and is using its default address 192.168.1.230, refer to “Starting the Initial Management Session on the Access Point” on page 19 for instructions on how to start a management session.
To start a management session on the access point, perform the following procedure:
1. Open the web browser on your management workstation.
2. Enter the IP address of the access point in the URL field of the web browser.
You should now see the logon window, shown in Figure 1.
Figure 1. Log On Window
3. Enter the username and password for the unit. The default values are “manager” for the username and “friend” for the password. The username and password are case-sensitive.
4. Click the Logon button.
18
AT-TQ2450 Wireless Access Point User’s Guide
Note

Starting the Initial Management Session on the Access Point

If you just installed the device and are powering it on for the first time, it queries the subnet on the LAN port for a DHCP server. If a DHCP server responds to its query, the unit uses the IP address the server assigns to it. If there is no DHCP server, the access point uses the default IP address
192.168.1.230.
There are a several ways to start the initial management session on the access point. One way is to establish a direct connection between your computer and the unit by connecting an Ethernet cable to the Ethernet port on the computer and the LAN port on the access point. This procedure requires changing the IP address on your computer to make it a member of the same subnet as the default IP address on the access point. You might perform this procedure if your network does not have a DHCP server and you want to configure the access point before connecting it to your network.
The initial management session may also be performed while the device is connected to your network. However, If your network does not have a DHCP server, you still have to change the IP address of your computer to match the subnet of the default address of the access point. Furthermore, if your network is divided into virtual LANs (VLANs), you have to be sure to connect the access port and your computer to ports on an Ethernet switch that are members of the same VLAN.
If your network has a DHCP server, use the IP address the server assigns it to it to start the management session.
The instructions for starting the initial management session are found in the following sections:
“Starting the Initial Management Session with a Direct Connection” on
page 20
“Starting the Initial Management Session without a DHCP Server” on
page 20
“Starting the Initial Management Session with a DHCP Server” on
page 21
The initial management session of the access point has to be conducted through the LAN port because the default setting for the radios is off.
19
Chapter 1: Overview
Note
Starting the
Initial
Management
Session with a
Direct
Connection
To start the management session with a direct Ethernet connection between your computer and the access port, perform the following procedure:
If the access point is using PoE, you may not perform this procedure because it involves a direct connection between your computer and the LAN port on the access point. You may either temporarily attach the power supply to the unit until after you have completed the initial management session or you may instead perform one of the other procedures for starting the initial management session.
1. Connect one end of a network cable to the LAN port on the access point and the other end to the Ethernet network port on your computer. (This requires removing the LAN cable you connected earlier in the hardware installation instructions.)
2. Change the IP address on your computer to 192.168.1.n, where n is a number from 1 to 254, but not 230. Refer to the documentation that accompanies your computer for instructions on how to set the IP address.
Starting the
Initial
Management
Session without a
DHCP Server
3. Set the subnet mask on your computer to 255.255.255.0.
4. Power on the access point.
5. Start the web browser on your computer.
6. Enter the IP address 192.168.1.230 in the URL field of the browser and press the Return key.
You should now see the logon window, shown in Figure 1 on page 18.
7. Enter “manager” for the username and “friend” for the password. The username and password are case-sensitive.
8. Click the Logon button.
This procedure explains how to start the initial management session on the access port when the LAN port is connected to an Ethernet switch on a network that does not have a DHCP server. To start the management session, perform the following procedure:
1. If your network has VLANs, check to be sure that your computer and the access port are connected to ports on the Ethernet switch that are members of the same VLAN. This might require accessing the management software on the switch and listing the VLANS and their port assignments. For example, if the access port is connected to a port that is a member of the Sales VLAN, your computer must be
20
AT-TQ2450 Wireless Access Point User’s Guide
connected to a port that is also a member of that VLAN. If your network is small and does not have VLANs or routers, you may connect your computer to any port on the Ethernet switch.
2. Change the IP address on your computer to 192.168.1.n, where n is a number from 1 to 254, but not 230. Refer to the documentation that accompanies your computer for instructions on how to set the IP address.
3. Set the subnet mask on your computer to 255.255.255.0.
4. Power on the access point.
5. Start the web browser on your computer.
6. Enter the IP address 192.168.1.230 in the URL field of the browser and press the Return key.
You should now see the logon window, shown in Figure 1 on page 18.
7. Enter “manager” for the username and “friend” for the password. The username and password are case-sensitive.
Starting the
Initial
Management
Session with a
DHCP Server
8. Click the Logon button.
This procedure explains how to start the initial management session on the access port when the LAN port is connected to a network that has a DHCP server. This procedure assumes that you have already configured the DHCP server with the appropriate information for the access point (e.g., IP address and default gateway). To start the management session, perform the following procedure:
1. Power on the access point.
2. Start the web browser on your computer.
3. Enter the IP address of the access point in the URL field of the browser and press the Return key. This is the IP address assigned to the access point by the DHCP server. If you do not know the address, refer to the DHCP server.
You should now see the logon window, shown in Figure 1 on page 18.
4. Enter “manager” for the username and “friend” for the password. The username and password are case-sensitive.
5. Click the Logon button.
21
Chapter 1: Overview

Using the Management Menus and Windows

Here is general information about the management menus and windows.
Web Browser
Menus
You may control the appearance of the menus with the Navigator pull­down menu in the upper right corner of the web browser windows. The menu options are Horizontal Tabs, Vertical Tabs, and Dropdown Menus. The Horizontal Tabs selection displays the main menu in a row near the top of the windows. Clicking a menu selection displays the menu options in a row beneath the main menu. Figure 2 shows the Manage menu.
Figure 2. Horizontal Menus
The Vertical Tabs selection displays the menus in a column on the left side of the management windows, as shown in Figure 3 on page 23.
22
AT-TQ2450 Wireless Access Point User’s Guide
Figure 3. Vertical Menus
The Dropdown Menu option displays the main menu in a horizontal row near the top of the window. Menu options are displayed vertically when you move the mouse over the main menu. Figure 4 shows the Manage menu.
Figure 4. Dropdown Menus
23
Chapter 1: Overview
The menus contain the same selections and perform the same functions regardless of the format. You may switch between formats without interrupting your current session or having to stop and start it again.
Saving Your
Changes
You need to remember to click the Update button when you are finished configuring the parameters in a management window. The button is located in the bottom of the windows. When you click the button, the access point immediately activates your changes and saves them in the configuration file. If you navigate to a different window without clicking the Update button, your changes are lost and have to be reentered.

Logging Off You should always log off when you are finished managing the unit. To log

off, click the Log Off option in the upper right corners of the management windows.
24

Chapter 2

Basic Settings Menu

This chapter describes the management functions of the menu selections in the Basic Settings menu. The chapter contains the following sections:
“Displaying Basic Information” on page 26
“Changing the Manager’s Login Name and Password” on page 28
“Changing the System Name, Contact, and Location” on page 29
25
Chapter 2: Basic Settings Menu

Displaying Basic Information

This section explains how to display the following information about the access point:
IP address
MAC address
Firmware version number
Build number
Operational time
To display the information, select Basic Settings from the main menus to display the “Provide basic settings” window. The information is contained in the Review Description of the Access Point section of the window. Refer to Figure 5. The fields are defined in Table 1 on page 27.
26
Figure 5. Provide Basic Settings Window
AT-TQ2450 Wireless Access Point User’s Guide
Table 1. Review Description of this Access Point
Field Description
IP Address Displays the IP address of the access
point. For instructions on how to set the IP address, refer to “Assigning a Static IP Address to the Access Point” on page 32 or “Assigning a Dynamic IP Address from a DHCP Server to the Access Point” on page 34.
MAC Address Displays is the MAC address of the device
and radio 1. Radio 2 has a different MAC address. You may not change the MAC addresses of the device or radios.
Firmware Version Displays is the version number of the
management software on the access point.
Build Number Displays the build number. This number
and the firmware version number identify the management software.
Time since system-up Displays the amount of time since the unit
was reset or powered on.
27
Chapter 2: Basic Settings Menu

Changing the Manager’s Login Name and Password

This procedure explains how to change the login name and password of the manager account on the access point. The default values are “manager” and “friend”, respectively. The access point can have only one manager account.
Changing the name and password does not affect your current management session of the access point.
To change the login name and password for the manager account, perform the following procedure:
1. Select Basic Settings from the main menus.
The access point displays the “Provide basic settings” window, shown in Figure 5 on page 26.
2. To change the manager name, select the Administrator Name field in the Provide Network Settings section of the window and enter the new name. Refer to Figure 5 on page 26. The name can be up to 12 alphanumeric characters. The first character must be a letter. It cannot be a number or special character. The name is case-sensitive.
3. To change the password, perform these steps:
a. Select the Current Password field in the Provide Network Settings
section of the window and enter the account’s current password.
b. Select the New Password field and enter a new password of up to
32 alphanumeric characters. It may not contain spaces or any of these special characters: “, $, :, <, >, ’, &, *. The password is case­sensitive. The new password is displayed as a series of asterisks on your screen.
c. Select the Confirm New Password field and enter the new
password again.
4. After editing the fields, click the Update button at the bottom of the window to activate your changes and save them in the configuration file on the access point. You must use the new manager name and password for all future management sessions on the unit.
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AT-TQ2450 Wireless Access Point User’s Guide

Changing the System Name, Contact, and Location

This procedure explains how to identify the access point by defining the system name, the person responsible for managing the device, and its location. This information is optional.
To change the system name, contact, and location information, perform the following procedure:
1. Select Basic Settings from the main menus.
The access point displays the “Provide basic settings” window. Refer to Figure 5 on page 26.
2. To change the system name, select the System Name field in the System Settings section of the window and enter a new name. The name can be up to 64 alphanumeric characters. Spaces are allowed. The default name is “AT-TQ2450.”
3. To enter the name of the person responsible for managing the unit, select the System Contact field and enter a name. You might also include the phone number and email address of the individual in this field. The name can be up to 64 alphanumeric characters. Spaces are allowed. The default name is “unknown.”
4. To specify the location of the access point, select the System Location field and enter the location. The location can be up to 64 alphanumeric characters. Spaces are allowed. The default location is “unknown.”
5. After editing the fields, click the Update button at the bottom of the window to activate your changes and save them in the configuration file on the device.
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Chapter 2: Basic Settings Menu
30

Chapter 3

Manage Menu

This chapter describes the management functions of the menu selections in the Manage menu. The chapter contains the following sections:
“Assigning a Static IP Address to the Access Point” on page 32
“Assigning a Dynamic IP Address from a DHCP Server to the Access
Point” on page 34
“Setting VLAN IDs” on page 35
“Enabling or Disabling Broadcast Ping Replies” on page 36
“Setting the Country Setting” on page 37
“Configuring Basic Radio Settings” on page 39
“Configuring the Radio Settings” on page 42
“Configuring Virtual Access Points” on page 54
“Managing Wireless Distribution System Bridges” on page 67
“Configuring the MAC Address Filter” on page 77
“Generating Event Messages for Unknown Access Points” on page 80
“Configuring the Access Point for the Optional AT-UWC Program” on
page 83
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Chapter 3: Manage Menu
Note

Assigning a Static IP Address to the Access Point

This section explains how to manually assign an IP address to the access point. The unit uses the address to communicate with devices on your network, such as management workstations, syslog servers, and RADIUS servers. The access point may have only one IP address.
If you have a DHCP server on your network and prefer the access point obtain its IP configuration from the server, refer to “Assigning a Dynamic IP Address from a DHCP Server to the Access Point” on page 34.
Changing the IP address of the access point interrupts your management session. To resume managing the device, you may have to change the IP address of your management workstation.
To manually assign an IP address to the unit, perform the following procedure:
1. From the Manage menu, select Ethernet Settings.
The access point displays the “Modify Ethernet (Wired) Settings” window in Figure 6.
Figure 6. Modify Ethernet (Wired) Settings Window
2. From the Connection Type pull-down menu, select Static IP.
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AT-TQ2450 Wireless Access Point User’s Guide
The Static IP Address, Subnet Mask, and Default Gateway fields in the window are activated so that you can change their values.
3. Select the Static IP Address field and enter the new IP address for the access point. The default address is 192.168.1.230.
4. Select the Subnet Mask fields and enter the subnet mask for the IP address. The default subnet mask is 255.255.255.0.
5. Select the Default Gateway fields and enter the default gateway address for the unit. The default gateway address is 192.168.1.254.
The default gateway is an IP address of an interface on a router or other Layer 3 routing device. It specifies the first hop to reaching the subnets or networks where your management devices, such as management workstations and syslog servers, reside. The access point can have only one default gateway and the network portion of the address must be the same as the IP address entered in step 3.
You have to assign a default gateway to the access point. If your network does not have a default gateway or you do not want to assign one to the access point at this time, enter an unused IP address of the same network as the IP address entered in step 3.
6. If you want to specify the IP addresses of Domain Name servers, enter up to two IP addresses in the DNS Nameservers fields. If you have only one DNS IP address, you must enter it in the top field.
7. Click the Update button at the bottom of the window to activate and save your changes on the access point.
Your management session is interrupted.
8. Start a new management session using the new IP address of the device.
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Chapter 3: Manage Menu
Note

Assigning a Dynamic IP Address from a DHCP Server to the Access Point

This section explains how to assign an IP address to the access point from a DHCP server. The unit uses the address to communicate with devices on your network, such as management workstations, syslog servers, and RADIUS servers. The access point may have only one IP address.
If you network does not have a DHCP server or you prefer to manually assign it an IP address, refer to “Assigning a Static IP Address to the Access Point” on page 32.
Changing the IP address of the access point interrupts your management session. To resume managing the device, you may have to change the IP address of your management workstation.
To activate the DHCP client to have the access point obtain its IP address configuration from a DHCP server, perform the following procedure:
1. From the Manage menu, select Ethernet Settings.
The access point displays the “Modify Ethernet (Wired) settings” window in Figure 6 on page 32.
2. From the Connection Type menu, select DHCP. This is the default setting.
3. If you want to manually specify the IP addresses of Domain Name servers, click Manual dialog button for DNS Nameservers and enter up to two IP addresses. If you have only one DNS IP address, you must enter it in the top address field.
If you want the access point to use the DNS addresses provided by the DHCP server, click the Dynamic dialog circle.
4. Click the Update button at the bottom of the window to activate and save your changes on the access point.
Your management session is interrupted.
The DHCP client on the unit queries the subnet on the LAN port for a DHCP server. If it receives a response, it uses the IP configuration the server provides. If there is no response, the unit uses the default IP address 192.168.1.230.
5. To resume your management session on the device, enter the new IP address of the access point in the URL field of your web browser.
34

Setting VLAN IDs

AT-TQ2450 Wireless Access Point User’s Guide
The “Modify Ethernet (Wired) settings” window has two settings for VLAN IDs (VIDs). One setting is used to specify the management VLAN and the other is used to designate a VLAN for untagged traffic.
Management
VLAN ID
VLAN ID for
Untagged Traffic
The Management VLAN ID field in the “Modify Ethernet (Wired) settings” window is used to specify the VLAN of your management workstations. To specify the management VID, perform the following procedure:
1. From the Manage menu, select Ethernet Settings.
The access point displays the “Modify Ethernet (Wired) settings” window in Figure 6 on page 32.
2. Select the Management VLAN ID field and enter a value of 1 to 4094.
The number should be the VID of the VLAN where your management workstation is located. You may specify only one VID.
3. Click the Update button to activate and save your changes on the access point.
The Untagged VLAN and Untagged VLAN ID fields in the “Modify Ethernet (Wired) settings” window allow you to specify a VLAN for untagged traffic. To specify the VLAN, perform the following procedure:
1. From the Manage menu, select Ethernet Settings.
The access point displays the “Modify Ethernet (Wired) settings” window in Figure 6 on page 32.
2. For the Untagged VLAN field, do one of the following:
Click Enabled if you want to be able to designate one VLAN on the
access point as an untagged VLAN. This is the default setting.
Click Disabled if the access point is to handle only tagged packets.
3. If your selected Enabled, select the Untagged VLAN ID field and enter the ID number of the VLAN which is to carry untagged packets. You may enter only one VID. The default value is 1.
4. Click the Update button to activate and save your changes on the access point.
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Chapter 3: Manage Menu

Enabling or Disabling Broadcast Ping Replies

You may configure the access point to either ignore or reply to ICMP echo requests to IP broadcast addresses, also referred to as broadcast pings. To configure broadcast ping replies, perform the following procedure:
1. From the Manage menu, select Ethernet Settings.
The access point displays the “Modify Ethernet (Wired) settings” window in Figure 6 on page 32.
2. In the Directed Broadcast ICMP Reply field, do one of the following:
If you want the access point to respond to broadcast pings, click
the Enabled dialog circle.
If you do not want the access point to respond to broadcast pings,
click the Disabled dialog circle.
3. Click the Update button to activate and save your changes on the access point.
36

Setting the Country Setting

Note
You should set the country setting of the access point as soon as you install the unit. This ensures that the device operates in compliance with the codes and regulations of your region or country.
Changing the country setting of the access point disables both radios. Consequently, this procedure is disruptive to the operations of your network if the unit is actively forwarding network traffic.
To set the country setting, perform the following procedure:
1. Select Wireless Settings from the Manage menu.
The access point displays the “Modify wireless settings” window, shown in Figure 7.
AT-TQ2450 Wireless Access Point User’s Guide
Figure 7. Modify Wireless Settings Window
2. Select the Country pull-down menu and select your country or region.
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Chapter 3: Manage Menu
Note
If the Country pull-down menu is deactivated, the country parameter was set by the manufacturer and cannot be changed. Contact your Allied Telesis sales representative for assistance if the setting is not correct for your country or region.
The access point displays a confirmation prompt.
3. Click OK to change the country setting or Cancel to cancel the procedure.
If you click OK, the access point changes the country setting and disables both radios on the access point. For instructions on how to enable the radios and configure their settings, refer to “Configuring Basic Radio Settings” on page 39 and “Configuring the Radio Settings” on page 42.
This procedure does not require clicking the Update button.
You must now reboot the access point. The new country setting is not active until the unit is rebooted. To reboot the unit, either power off and on the unit or continue with these steps:
4. From the Maintenance menu, select Configuration.
5. Click the Reboot button in the To Reboot the Access Point section of the “Manage the Access Point’s Configuration” window.
6. When the access point displays a confirmation prompt, click OK to reboot the unit or Cancel to cancel the procedure.
7. To resume managing the unit, wait for it to complete initializing its management software and then start a new management session.
38

Configuring Basic Radio Settings

The management software has two windows for configuring the operational settings of the radios in the access point. The “Modify radios settings” window, described in “Configuring the Radio Settings” on page 42, is the main window for adjusting the radio parameters because it contains all the parameters, everything from operational mode to broadcast/multicast rate limiting. This is the window to use when you need to fine tune the properties of the radios.
If you are only interested in configuring basic radio parameters, you may find everything you need in the “Modify wireless settings” window, which is the topic of this section. From this window you can perform these basic radio functions:
Enable or disable a radio
Select the operational mode
Select the channel
AT-TQ2450 Wireless Access Point User’s Guide
Enable or disable the station isolation mode
When you change a radio parameter in the “Modify wireless settings” window, the change is reflected in the “Modify radios settings” window. So you could enable a radio here and perhaps select the channel, and then move to the “Modify radio settings” window to adjust additional parameters.
The “Modify wireless settings” window does contain one parameter, however, that is not in the “Modify radio settings” window, and that is the station isolation mode parameter. The parameter determines whether the clients of a VAP can communicate with each other through the access point. That parameter can only be set from this window.
To configure basic radio settings from the “Modify wireless settings” window, perform the following procedure:
1. From the Manage menu, select Wireless Settings.
The access point displays the “Modify wireless settings” window. An example is shown in Figure 7 on page 37.
2. Configure the settings as needed. The parameters are described in Table 2 on page 40.
3. When you are finished configuring the parameters, click the Update button to activate and save your changes on the access point.
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Chapter 3: Manage Menu
Table 2. Modify Wireless Settings Window
Field Description
Radio On Off Enables or disables the radio. The
selections are described here:
- On: Enables the radio. You have to enable a radio before you can configure its parameter settings.
- Off: Disables the radio. This is the default setting.
MAC Address Displays the MAC address of the radio.
This value cannot be changed
Mode Specifies the Physical Layer (PHY)
standard of the radio. The available modes depend on the radio and country. The modes are:
- IEEE 802.11a: The access point accepts only 802.11a clients.
- IEEE 802.11b/g: The access point accepts only 802.11b and 802.11g clients.
- IEEE 802.11a/n: The access point accepts only 802.11a and 802.11n clients operating at 5 GHz. This is the default setting for the 5 GHz radio.
- IEEE 802.11b/g/n: The access point accepts 802.11b, 802.11g, and 802.11n clients operating at 2.4 GHz. This is the default setting for the 2.4 GHz radio.
- 2.4 GHz IEEE 802.11n: The access point accepts only 802.11n clients operating at 2.4 GHz.
- 5 GHz IEEE 802.11n: The access point accepts only 802.11n clients operating at 5 GHz.
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AT-TQ2450 Wireless Access Point User’s Guide
Table 2. Modify Wireless Settings Window (Continued)
Field Description
Channel Specifies the channel for the radio in the
access point. The number of available channels varies by radio, mode, and country. Here are the guidelines:
- At the Auto setting, the access point sets the channel automatically. The access point listens on the channels and selects the one with the least traffic.This is the default setting.
- You can select a channel from the pull­down menu. You may select only one channel.
- The Auto selection is not available if you use the cluster feature to automatically assign the channels to the radios in the access points. For information, refer to “Using Automatic Channel Assignments” on page 103.
Station Isolation Enables or disables station isolation.
When station isolation is enabled, the access point does not allow the wireless clients of a VAP to communicate with each other, but does allow them to communicate with clients in other VAPs and with the wired LAN.
The feature is disabled when the dialog box is empty and enabled when the dialog box has a check mark. The default setting is disabled.
To activate or deactivate the feature, click the dialog box to insert or remove the check mark.
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Chapter 3: Manage Menu

Configuring the Radio Settings

To configure the parameter settings of the 2.4 and 5 GHz radios, perform the following procedure:
1. From the Manage menu, select Radio.
The management software displays the “Modify radio settings window,” shown in Figure 8 on page 43.
2. From the Radio pull-down menu, select a radio. Options 1 and 2 are the 2.4 and 5 GHz radios, respectively. The default is radio 1. You can configure only one radio at a time.
3. To activate a radio, click the On dialog circle for the Status option. You cannot configure a radio when its status is off. To deactivate a radio, click the Off dialog circle.
4. Configure the radio parameters, which are defined in Table 3 on page 44.
5. When you are finished configuring the parameters, click the Update button to activate and save your changes on the access point.
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AT-TQ2450 Wireless Access Point User’s Guide
Figure 8. Modify Radio Settings Window
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Chapter 3: Manage Menu
Table 3. Modify Radio Settings Window
Parameter Description
Mode Specifies the Physical Layer (PHY)
standard of the radio. The available modes depend on the radio and country. The modes are:
- IEEE 802.11a: The access point accepts only 802.11a clients.
- IEEE 802.11b/g: The access point accepts only 802.11b and 802.11g clients.
- IEEE 802.11a/n: The access point accepts only 802.11a and 802.11n clients operating at 5 GHz. This is the default setting for the 5 GHz radio.
- IEEE 802.11b/g/n: The access point accepts 802.11b, 802.11g, and 802.11n clients operating at 2.4 GHz. This is the default setting for the 2.4 GHz radio.
- 2.4 GHz IEEE 802.11n: The access point accepts only 802.11n clients operating at 2.4 GHz.
- 5 GHz IEEE 802.11n: The access point accepts only 802.11n clients operating at 5 GHz.
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AT-TQ2450 Wireless Access Point User’s Guide
Table 3. Modify Radio Settings Window (Continued)
Parameter Description
Channel Specifies the radio channel. The available
channels vary by radio, mode, and country. Here are the guidelines:
- The Auto setting, the default setting, sets the channel automatically. The access point selects the channel with the least traffic. This is the default setting.
- You can set the channel manually using the Channel pull-down menu.
- The Auto selection is not available when automatic channel reassignment in the cluster feature is activated, as explained in Chapter 4, “Cluster Menu” on page 87.
- If you select Auto, you may use the Eligible Channels parameter to restrict the channels from which the access point may choose.
- You must set the channel manually if you are using the Wireless Distribution System (WDS) bridge feature, as explained in “Managing Wireless Distribution System Bridges” on page 67.
Eligible Channels Specifies the available channels when the
channel is selected automatically. This selection is unavailable when the channel is selected manually. The available channels vary by radio, mode, and country. To deselect a channel, click its dialog box to remove the check mark. The default is all available channels.
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Chapter 3: Manage Menu
Table 3. Modify Radio Settings Window (Continued)
Parameter Description
Periodical Channel Refresh
Specifies whether the access point periodically reruns the channel selection process. Here are the guidelines:
- This selection is only available when the Channel parameter is set to Auto.
- Adding a check mark to the dialog box enables the feature.
- Removing the check mark from the dialog box disables the feature. This is the default setting.
- The access point runs the channel selection process every 24 hours, but only if the radio is not forwarding traffic from wireless clients. If it detects traffic, the access point delays the selection process for thirty minutes.
Channel Bandwidth Specifies whether the radio should use a
40 MHz-wide channel or the legacy 20 MHz-wide channel. Here are the guidelines:
46
- The 40 MHz-wide channel allows for higher data rates, but reduces the number of available channels for other wireless devices.
- This parameter is only available with
802.11n modes.
AT-TQ2450 Wireless Access Point User’s Guide
Table 3. Modify Radio Settings Window (Continued)
Parameter Description
Primary Channel Specifies the location of the Primary
channel when a radio is operating at 40 MHz.
A 40 MHz channel consists of two 20 MHz channels. They are contiguous in the frequency domain and referred to as the Primary and Secondary channels. The Primary channel is used by 802.11n clients that support only a 20 MHz channel bandwidth, and for legacy clients.
You may use this parameter to specify the Primary channel of the 40 MHz bandwidth. The options are described here:
- Upper: Designates the upper 20 MHz channel of the 40 MHz bandwidth as the Primary channel.
- Lower: Designates the lower 20 MHz channel of the 40 MHz bandwidth as the Primary channel. This is the default setting.
This parameter is only available with
802.11n modes.
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Chapter 3: Manage Menu
Table 3. Modify Radio Settings Window (Continued)
Parameter Description
Short Guard Interval Supported
Specifies the dead time interval, in nanoseconds, between OFDM symbols. The guard interval prevents Inter-Symbol and Inter-Carrier Interference (ISI, ICI). The 802.11n mode supports a reduction in the interval from 800 nanoseconds, defined in the a and g standards, to 400 nanoseconds. This may provide up to a 10% improvement in data throughput. The selections are described here:
- Yes: The access point uses a 400 ns guard interval when communicating with clients that also support the feature. This is the default setting.
- No: The access point uses an 800 ns guard interval.
This parameter is only available with the
802.11n modes.
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AT-TQ2450 Wireless Access Point User’s Guide
Table 3. Modify Radio Settings Window (Continued)
Parameter Description
Multidomain Regulatory Mode
Specifies whether a radio should operate in the Multidomain Regulatory Mode (World Mode) and include the country code in its beacons and probe responses. This allows client stations to operate in any country without reconfiguration.
This feature only applies to radio 1 because it operates in the g band (2.4 GHz band). This selection does not apply to radio 2 because it operates in the a band (5 GHz band) and always includes the country code in its beacons, as specified in the 802.11h standard.
The settings are described here:
- Enabled: Activates the Multidomain Regulatory Mode (World Mode) and includes the country code in the beacons and probe responses.
- Disabled: Disables the Multidomain Regulatory Mode (World Mode) and prevents the transmission of the country code in beacons and probe responses.
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Chapter 3: Manage Menu
Table 3. Modify Radio Settings Window (Continued)
Parameter Description
Protection Enables or disables rules that guarantee
that transmissions do not cause interference with legacy stations or applications. The possible settings are describe here:
- Auto: This setting enables protection when legacy devices are within range of the radio.
- Off: This setting disables the protections. Legacy clients and access points within range may be affected by 802.11n transmissions.
Here are the guidelines:
- The protection applies to 802.11n and
802.11b/g.
- Activating protection does not prevent clients from associating with the access point.
Beacon Interval Specifies the time interval, in milliseconds,
for transmissions of beacon frames. The access point transmits beacon frames to announce the existence of the wireless network. The range is 20 to 2000 milliseconds. The default setting is 100 milliseconds (10 beacon frames per second).
DTIM Period Specifies the Delivery Traffic Information
Map (DTIM) period. This value specifies how often clients sleeping in low power mode should check the access point for buffered traffic. The interval is defined in beacon frames. The range is 1 to 255 beacons frames. The default is 2 beacon frames.
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AT-TQ2450 Wireless Access Point User’s Guide
Table 3. Modify Radio Settings Window (Continued)
Parameter Description
Fragmentation Threshold Specifies packet size for fragmentation.
The fragmentation threshold lets you control the maximum size of packets the access point transmits. Packets that exceed the threshold are transmitted as multiple 802.11 packets.
The range is 256 to 2346 bytes. Setting the threshold to the maximum value effectively disables fragmentation.
Fragmentation involves more overhead because of the extra work in dividing up and reassembling frames, which can reduce throughput. But fragmentation can be useful in controlling interference.
RTS Threshold Specifies the size in octets of MPDUs that
initiate a Request to Send (RTS) and Clear to Send (CTS) handshake. The range is 0 to 2347 octets.
You may use this parameter to control the use of RTS/CTS handshakes when the access point transmits MPDUs. The access point uses the handshake before transmitting MPDUs that exceed the defined threshold. If you specify a low value, RTS packets are sent more frequently. This may consume more bandwidth and reduce the throughput. But more RST packets may help a network recover from interference or collisions, which might occur on a busy network.
Maximum Stations Specifies the maximum number of clients
the access point supports. The value is 0 to 200. When this parameter is set to 0, the access point rejects all clients. Allied Telesis recommends setting this parameter to 30 clients. The default is 200 clients.
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Chapter 3: Manage Menu
Table 3. Modify Radio Settings Window (Continued)
Parameter Description
Transmit Power Specifies the transmission power of the
access point. The power is selected from a list of percentages, in the range of 1% to 100%. The default is 100%. Here are the guidelines:
- High transmission power levels are more cost-effective than low settings because the access point has a greater range. This reduces the number of access points required to cover a particular area.
- Low transmission power settings can be useful in reducing overlap and interference between access points or increasing security by limiting the wireless signals to a physical location.
Fixed Multicast Rate Specifies the multicast transmission rate
of the access point. At the default Auto setting, the multicast transmission rate is fixed to the minimum rate in the Legacy Rate Sets setting. The value is in Mbps.
Legacy Rate Sets Specifies the supported and advertised
data transmission rates of the access point. Here are the guidelines:
- The Supported row specifies the data rates the access point supports. The default setting is all data rates.
- The Basic row specifies the data rates the access point advertises to other access points and wireless clients.
- The access point is generally more efficient when it advertises a subset of its supported data rates.
MCS (Data Rate) Settings Specifies the Modulation and Coding
Scheme (MCS) index the radio should advertise to 802.11n clients. The MCS indexes (also known as MCS data rates) are defined in the 802.11n standard.
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AT-TQ2450 Wireless Access Point User’s Guide
Table 3. Modify Radio Settings Window (Continued)
Parameter Description
Broadcast/Multicast Rate Limiting
Enables or disables rate limiting of broadcast and multicast packets. Here are the guidelines
- To activate rate limiting, click the dialog box to add a check mark. To deactivate rate limiting, click the box to remove the check mark. The default setting is disabled.
- The Rate Limit parameter defines the maximum number of broadcast and multicast packets per second of the access point. The parameter has a range of 1 to 50 packets per second. The default is 50 packets per second.
- The Rate Limit Burst parameter allows intermittent bursts of traffic on the access point above the rate limit. The default is 75 packets per second.
- The Rate Limit Burst parameter must be greater than the Rate Limit parameter.
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Note

Configuring Virtual Access Points

Virtual access points (VAPs) function as independent broadcast domains and are the wireless equivalent of Ethernet VLANs. They are seen by clients as independent access points, with their own VIDs, SSIDs, and security methods.
Here are the guidelines to VAPs:
Each radio can have up to 16 VAPs. Allied Telesis recommends no
more than five VAPs per radio.
The VAPs are numbered from 0 to 15.
If you use the cluster feature, VAPs are shared among the access
points of the cluster. For further information, refer to Chapter 4, “Cluster Menu” on page 87.
You can enable and disable the VAPs individually, except for the
default VAP, VAP0, which can only be disabled by disabling the radio itself.
The security methods for the VAPs are 802.1x, static WEP,
Enterprise WPA, and Personal WPA.
The VAPs of a radio can have different security methods.
VAPs can have the same or different VLAN IDs.
The access point does not forward traffic on disabled VAPs.
To configure VAPs, perform the following procedure:
1. From the Manage menu, select VAP.
The management software displays the “Modify Virtual Access Point settings” window, shown in Figure 9 on page 56.
2. Use the Radio pull-down menu above the list of VAPs to select a radio. Menu options 1 and 2 are the 2.4 and 5 GHz radios, respectively. The default is radio 1. You can configure only one radio at a time.
3. Click the Enabled dialog box of the VAP you want to edit. You cannot edit a VAP when it is disabled. A VAP is enabled when the Enabled dialog box has a check mark and disabled when the dialog box is empty. You can configure more than one VAP at a time.
If you remove the check mark from the Enabled dialog box, you disable the VAP. A disabled VAP does not forward network traffic.
4. Enter the VID for the VAP in the VLAN ID field.
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AT-TQ2450 Wireless Access Point User’s Guide
Here are the guidelines for VIDs:
The range is 1 to 4094.
The default is VID 1.
You may assign the same VID to more than one VAP.
A VAP can have only one VID.
The number is ignored for wireless clients who are assigned VIDs
from a RADIUS server because VIDs from a RADIUS server take precedence over the number in this field. Consequently, if you configure the security on a VAP to 802.1X or WPA Enterprise, both of which require a RADIUS server, the value in this field is ignored for clients who have VIDs in their RADIUS accounts.
If you use 802.1x security for a VAP and activate Require VLAN ID
in Dynamic VLAN, the VID for the dynamic VLAN must come from the client accounts on the RADIUS server.
5. Select the SSID field and enter a name for the VAP. Here are the guidelines:
A VAP must have a name.
A name can be from 1 to 32 characters.
Spaces are allowed.
You may assign the same name to more than one VAP.
6. Click the Broadcast SSID dialog box to either enable or disable the broadcast of the SSID of the VAP by the radio on the access point. When the dialog box has a check mark, the default setting, the access point transmits the SSID to advertise the VAP to the clients. When the dialog box is empty, the access point does not advertise the VAP. Clients who want to connect to a VAP that is not advertised have to know its name.
7. From the Security pull-down menu, select the security method for the VAP and configure the security settings. The security options are described in the following sections:
“No Security” on page 57
“IEEE 802.1x Security” on page 57
“Static WEP” on page 59
“WPA Enterprise” on page 62
“WPA Personal” on page 65
The default security level for VAPs is None, which does not provide authentication or packet encryption for VAPs.
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8. If you want to control access to your network through the VAP by filtering clients by their MAC addresses, select the MAC Filtering pull­down menu and select Enabled. To disable MAC address filtering, select Disabled, the default setting. For instructions on how to configure the filter, refer to “Configuring the MAC Address Filter” on page 77.
9. Click the Update button to activate and save your changes on the access point.
The “+” button to the right of each VAP row displays the security settings.
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Figure 9. Modify Virtual Access Point Settings Window
AT-TQ2450 Wireless Access Point User’s Guide

No Security The None security level is intended for VAPs with wireless clients that do

not require encryption or authentication. This is the default setting.
IEEE 802.1x
Security
The guidelines for IEEE 802.1x security are listed here:
This security method requires an external RADIUS server capable
of EAP.
The authentication server must have Protected EAP (PEAP) and
MSCHAP V2 to support Windows clients.
The clients and VAPs must use the same authentication method.
The IEEE 802.1x security parameters are shown in Figure 10 and described in Table 4.
Figure 10. 802.1x Authentication for VAPs
Table 4. IEEE 802.1x
Field Description
RADIUS IP Address Enter the IPv4 address of the primary
RADIUS server.
Secondary RADIUS IP Address
Enter the IPv4 address of the secondary RADIUS server. This field is optional. The access point sends authentication requests to this address if the primary RADIUS server does not respond to requests.
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Table 4. IEEE 802.1x (Continued)
Field Description
RADIUS Key Enter the shared secret key for the
primary RADIUS server. The key can be up to 128 characters and can consist of letters, numbers, and special characters. The key is case-sensitive. This key must be the same as the key on the server.
Secondary RADIUS Key Enter the shared secret key for the
secondary RADIUS server.
RADIUS Port (Range: 0 -
65535)
RADIUS Accounting Port (Range: 0 - 65535)
Enable RADIUS Accounting
Require VLAN ID in Dynamic VLAN
Enter the RADIUS port number of the RADIUS server. If you entered IP addresses for both primary and secondary servers, the units must use the same port number. The default is 1812.
Enter the RADIUS accounting port number of the RADIUS server. If you entered IP addresses for both primary and secondary servers, the units must use the same accounting port number. The default is 1813.
Enable or disable RADIUS accounting by clicking the dialog box. The feature is enable when the dialog box has a check mark and disabled when the dialog box is empty. The default setting for accounting is disabled.
Enable or disable whether wireless clients receive their VIDs from their accounts on the RADIUS server. When the dialog box has a check mark, the feature is enabled and the wireless clients receive their VIDs from the RADIUS server when they are authenticated. The feature is disabled when the dialog box is empty. The default setting is disabled.
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Broadcast Key Refresh Rate (Range: 0 - 86400)
Specify the refresh rate for the broadcast (group) key for the clients of the VAP. The range is 0 to 86400 seconds. The default is 0 seconds. The value 0 disables to refresh rate so that the broadcast key is not refreshed.
AT-TQ2450 Wireless Access Point User’s Guide
Table 4. IEEE 802.1x (Continued)
Field Description
Session Key Refresh Rate (Range: 0 - 86400)
Specify the refresh rate for the session (unicast) key for the clients of the VAP. The range is 0 to 86400 seconds. The default is 0 seconds. The value 0 disables the refresh rate so that the unicast key is not refreshed.

Static WEP The parameter settings for static WEP security are shown in Figure 11 and

defined in Table 5.
Figure 11. Static WEP Encryption for VAPs
Table 5. Static WEP
Field Description
Transfer Key Index Select the key the access point should
use to encrypt network traffic.
Key Length Select the key length of 64 or 128 bits.
The default is 128 bits.
Key Type Select whether the key is ASCII or
hexadecimal. The default is hexadecimal.
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Table 5. Static WEP (Continued)
Field Description
WEP Keys Enter up to four WEP keys in the fields
numbered 1 to 4. The key length and type settings determine the length and format of the keys. The order of the keys has be the same on the access point and clients. Here are the guidelines for ASCII keys:
An ASCII key may contain upper and lower characters and the numbers 0 to 9.
An ASCII key is case-sensitive.
The key length of 64 bits requires five ASCII characters.
The key length of 128 bits requires 13 ASCII characters.
Here are the guidelines for hexadecimal keys:
A hexadecimal key may contain the letters A to F and numbers 0 to 9.
The key length of 64 bits requires 10 hexadecimal characters.
The key length of 128 bits requires 26 hexadecimal characters.
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AT-TQ2450 Wireless Access Point User’s Guide
Table 5. Static WEP (Continued)
Field Description
Authentication Specify whether or not the access point
authenticates VAP clients. The options are described here.
Open System: The access point does not authenticate the VAP clients. All clients, even those without the correct WEP keys, are allowed to connect to the access point. This is the default setting. (Clients in an open system VAP still must have the correct WEP key to encrypt and decrypt the traffic they exchange with the access point.)
Shared Key: Clients must have the correct WEP key to connect with the access point. Clients without the correct WEP key may not associate with the device.
Both Open System and Shared Key: Clients configured in WEP shared key mode must have the correct WEP key to connect to the access point. Clients configured in WEP open system mode do not need the correct WEP key to connect to the access point.
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WPA Enterprise The WPA Enterprise security parameters are shown in Figure 12 and

defined in Table 6 on page 63.
Figure 12. WPA Enterprise for VAPs
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AT-TQ2450 Wireless Access Point User’s Guide
Table 6. WPA Enterprise
Field Description
WPA Versions Select the WPA version. The options are
listed here:
- WPA: Select this option if all the wireless clients of the VAP support WPA, but not WPA2.
- WPA2: Select this option if all the clients support WPA2, but not WPA. This is the default setting.
- Both WPA and WPA2 - Select both options if the VAP has both WPA and WPA2 clients.
- Enable-pre-authentication: Select this option if the VAP has WPA2 clients and you want the access point to share the pre-authentication packets from the clients with other access points. This can speed up authentication for roaming clients who connect to multiple access points. This option does not apply to WPA clients.
Cipher Suites Select the cipher suite for the VAP, The
options are listed here:
- TKIP
- CCMP (AES)
- Both TKIP and CCMP (AES)
When both TKIP and CCMP (AES) are selected, clients configured to use WPA with RADIUS must have one of the following:
- A valid TKIP RADIUS IP address and RADIUS key.
- A valid CCMP (AES) IP address and RADIUS key.
RADIUS IP Address Enter the IPv4 address of the primary
RADIUS server.
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Table 6. WPA Enterprise (Continued)
Field Description
Secondary RADIUS IP Address
Enter the IPv4 address of a secondary RADIUS server. This field is optional. The access point sends authentication requests to this address if the primary RADIUS server does not respond to requests.
RADIUS Key Enter the shared secret key for the
primary RADIUS server. The key can be up to 128 characters and can consist of letters, numbers, and special characters. The key is case-sensitive. This key must be same on the access point and server.
Secondary RADIUS Key Enter the shared secret key for the
secondary RADIUS server.
RADIUS Port (Range: 0 -
65535)
Enter the RADIUS port number of the RADIUS server. If you entered IP addresses for both primary and secondary servers, the units must be using the same port number. The default is 1812.
RADIUS Accounting Port (Range: 0 - 65535)
Enable RADIUS Accounting
Require VLAN ID in Dynamic VLAN
Enter the RADIUS accounting port number of the RADIUS server. If you entered IP addresses for both primary and secondary servers, the units must use the same accounting port number. The default is 1813.
Enable or disable RADIUS accounting by clicking the dialog box. The feature is enable when the dialog box has a check mark and disabled when the dialog box is empty. The default setting for accounting is disabled.
Enable this option to require that the wireless clients of the VAP be assigned VLAN IDs from the RADIUS server. When this option is enabled, the VAP does not accept clients that are not assigned VLAN IDs by the RADIUS severs. The option is enabled when it has a check mark. The default setting is disabled.
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AT-TQ2450 Wireless Access Point User’s Guide
Table 6. WPA Enterprise (Continued)
Field Description
Broadcast Key Refresh Rate (Range: 0 - 86400)
Specify the refresh interval rate for the broadcast (group) key. The range is 0 to 86400 seconds. The value 0 prevents the key from being refreshed.
Session Key Refresh Rate (Range: 0 - 86400)
Specify the refresh interval rate for the session (unicast) keys. The range is 0 to 86400 seconds. The value 0 prevents the keys from being refreshed.

WPA Personal The options for WPA Personal are shown in Figure 13 and defined in

Table 7.
Figure 13. WPA Personal for VAPs
Table 7. WPA Personal
Field Description
WPA Versions Select the WPA version. The options are
listed here:
- WPA: Select this option if the VAP wireless clients support WPA, but not WPA2.
- WPA2: Select this option if the clients support WPA2, but not WPA. This is the default setting.
- Both WPA and WPA2 - Select both options if the VAP has both WPA and WPA2 clients.
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Table 7. WPA Personal (Continued)
Field Description
Cipher Suites Select the cipher suite for the VAP. The
options are listed here:
- TKIP
- CCMP (AES)
- Both TKIP and CCMP (AES)
When both TKIP and CCMP (AES) are selected, clients who are using WPA must have one of the following:
- A valid TKIP key.
- A valid CCMP (AES) key.
Key Enter a shared secret key of 8 to 63
alphanumeric characters. The key can include special characters.
Broadcast Key Refresh Rate (Range: 0 - 86400)
Specify the refresh interval rate for the broadcast (group) key. The range is 0 to 86400 seconds. The value 0 prevents the key from being refreshed. The default is 0 seconds.
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Managing Wireless Distribution System Bridges

LAN Segment 1 LAN Segment 2
AB
WDS Bridge
LAN Segment
AB
WDS Bridge
A wireless distribution system (WDS) bridge is a wireless link between two access points. The link allows the units to forward traffic directly to each other over a wireless connection as if they were connected with a physical Ethernet wire.
You can use WDS bridges to link network segments with wireless, rather than wired, connections. This is illustrated in Figure 14 where access points A and B form a WDS bridge to connect two LAN segments together.
Figure 14. WDS Bridge Used to Connect LAN Segments
AT-TQ2450 Wireless Access Point User’s Guide
Configurations of
WDS Bridges
You might also use the feature to extend a network into areas where Ethernet cable installation would be impractical or expensive. In Figure 15, access point B is located in an area that does not have Ethernet cabling. Consequently, its LAN port is not connected to the wired network. However, its wireless clients still have access to the network because of the WDS bridge to access point A, whose LAN port is connected to the wired network.
Figure 15. WDS Bridge Used to Extend a Network
You can connect up to four AT-TQ2450 Access Points with WDS bridges. Figure 16 on page 68 illustrates the supported configurations.
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One configuration for a WDS bridge of two units.
One configuration for a WDS bridge of three units.
Two configurations for a WDS bridge of four units.
Figure 16. Supported Configurations of WDS Bridges
Here are the configuration restrictions for WDS bridges:
The wireless connections of the access points in a WDS bridge
community must not form a loop. For instance, Figure 17 on page 69 is an invalid loop configuration of three access points.
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AT-TQ2450 Wireless Access Point User’s Guide
Figure 17. Invalid Loop Configuration of Access Points
Additionally, the access points may not form loops with wired
devices. An example is shown in Figure 18.
Figure 18. Invalid Loop Configuration of Access Points to a Wired Network
Device

Radio You may use either the 2.4 or 5 GHz radios in the units to create a WDS

bridge. The access points must all use the same radio.

Radio Mode The access points must use the same radio mode. You may use any

available radio mode. The available modes depend on the country or area where the access point is installed.

Radio Channel When access points are operating in close proximity to each other such

that there is an overlap in coverage, the usual practice is to set the radios to different channels to minimize radio interference and improve performance.
The radios in the access points of a WDS bridge, however, have to use the same channel. This means that you have to disable automatic channel selection, which is the default settings on the units, and manually select the channel. The common channel between the access points can be any available channel.

VAP0 The access points of a WDS bridge use VAP0 as the wireless link. The

VAP assignment cannot be changed. Wireless clients should not be allowed to use VAP0 when the devices are arranged in a WDS bridge because the bridge could experience a reduction in performance. Wireless clients should use other VAPs on the units to access the network.
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Encryption Here are the available encryption settings for a WDS bridge:
No encryption
Static WEP
WPA Personal
The available encryption modes for a WDS bridge vary depending on the radio mode and VAP security. The possible settings are listed in Table 8. For example, if you want to use WPA Personal on a WDS bridge, you have to set VAP0 to either WPA Personal or WPA Enterprise.
Table 8. Available Encryption Settings on WDS Bridges
Radio Mode VAP0 Security Level
non-802.11n None, static WEP, or
802.1x
non-802.11n WPA Personal or WPA
Enterprise
802.11n mode None None
802.11n mode WPA Personal or WPA Enterprise

Guidelines Here are the guidelines for WDS bridges:

You may use either the 2.4 or 5 GHz radios in the access points to
create a WDS bridge.
You may use static WEP or WPA Personal encryption to guard the
data in the wireless link.
The WDS bridge feature on the AT-TQ2450 Access Point is not
compatible with the same features on other products from Allied Telesis or other companies.
Available WDS Bridge

Encryption

None or Static WEP
None, Static WEP, or WPA Personal
None or WPA Personal
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The radios of the access points of a WDS bridge have to be set to
the same mode and channel.
If you use the 5 GHz radio to create the bridge, Allied Telesis
recommends selecting the common channel for the bridge from the W52 band (channels 5180, 5200, 5220, and 5240 MHz). This is to minimize the chance that the access point, which supports dynamic frequency selection, has to change channels and break the WDS bridge due to radar signals.
You may not create a loop in a WDS bridge. The MAC address of
an access point can be represented only once in the MAC address tables of other devices.
There can be only one WDS bridge between two access points.
AT-TQ2450 Wireless Access Point User’s Guide
The access points of a WDS bridge use VAP0 as the
communications link. The VAP should not be used by wireless clients.
You may not combine the WDS bridge and cluster features on the
same access points.
Preparing the
Access Point for
the WDS Bridge
This procedure explains how to prepare the access points for a WDS bridge and assumes you have already decided on which radio to use in addition to the following common settings:
Radio mode
Radio channel
Security level for VAP0
The settings must be the same on all the access points of a WDS bridge.
To prepare an access point for a WDS bridge, perform the following procedure:
1. Start a management session on one of the access points of the bridge.
2. Set the radio mode for the WDS bridge.
You may use any available radio mode for the bridge, but the radios in the access points must use the same mode. For instructions on setting the radio mode, refer to “Configuring Basic Radio Settings” on page 39 or “Configuring the Radio Settings” on page 42.
3. Manually set the radio channel to the common channel for the WDS bridge.
You may use any available channel for the bridge, but the devices must use the same channel. You may not use the Auto setting, which sets the channel setting automatically. For instructions, refer to “Configuring Basic Radio Settings” on page 39 or “Configuring the Radio Settings” on page 42.
4. Configure the encryption settings for VAP0 on the radio.
The radio mode for VAP0 determines the available encryption settings for the WDS bridge. Refer to Table 8 on page 70 for the various combinations of encryption settings. For instructions on how to configure the encryption on VAPs, refer to “Configuring Virtual Access Points” on page 54.
5. Activate access point detection on the radio of the WDS bridge.
When you configure the WDS bridge on the access point, you identify the remote unit by its MAC address. This is accomplished by activating access point detection. You do not have to activate it on both radios,
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but only on the one to be used for the bridge. For example, if you are planning to use the 2.4 GHz radio for the bridge, you should activate access point detection on that radio. For instructions, refer to “Viewing Neighboring Access Points” on page 120.
After performing steps 1 to 5, do one of the following:
If the radios in the other access point of the bridge are already
enabled, continue with this procedure.
If the radios in the other access point of the bridge are disabled,
the default setting, end your current management session, start a new management session on the other unit, and repeat this procedure.
Configuring the
WDS Bridge
To configure the WDS bridge settings, perform the following procedure:
1. Select WDS from the Manage menu.
The access point displays the “Configure WDS bridges to other access points” window, shown in Figure 19.
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Figure 19. Configure WDS Bridges to Other Access Points Window
AT-TQ2450 Wireless Access Point User’s Guide
Note
The window has four sections. You may use each section to create a WDS bridge to a different access point.
2. Use the Radio pull-down menu in one of the sections to select the radio for the WDS bridge between the access points. Radios 1 and 2 are the 2.4 and 5 GHZ radios, respectively, The default is radio 1.
You cannot configure the fields of a WDS bridge if the corresponding radio is disabled. If the fields are deactivated, refer to “Configuring Basic Radio Settings” on page 39 or “Configuring the Radio Settings” on page 42 for instructions on how to enable the radio.
The Local Address field displays the MAC address of the radio. You cannot change this field.
3. Click the dialog circle with the arrow to the right of the Remote Address field.
The device displays the neighboring access points in a window. An example is shown in Figure 20.
Figure 20. Remote Address List
4. Click the MAC address of the remote access point of the WDS bridge. You may select only one neighboring access point.
5. Click the Encryption pull-down menu and select the encryption method for the WDS bridge. The available selections depend on the radio mode and VAP0 security level. Refer to Table 8 on page 70 for the available security levels. If you do not want the bridge to use encryption, select None, the default setting.
6. Configure the settings of the encryption method.
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Static WEP The static WEP parameters are shown in Figure 21 and described in

The encryption parameters are described in the following sections:
“Static WEP” on page 74
“WPA Personal” on page 75
7. After configuring the encryption settings, click the Update button to activate and save your changes on the access point.
8. Log off to end your management session on the access point.
9. Start a management session on the other access point of the WDS bridge.
10. Repeat “Preparing the Access Point for the WDS Bridge” on page 71 and this procedure to configure the WDS bridge on the other access point. Be sure to assign the same values to the parameters.
Table 9.
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Figure 21. Static WEP on WDS Bridges
Table 9. Static WEP on WDS Links
Field Description
Key Length Select either 64 or 128 bits for the key
length. The default is 128 bits.
Key Type Select either ASCII or hexadecimal for the
key type. The default is hexadecimal.
AT-TQ2450 Wireless Access Point User’s Guide
Table 9. Static WEP on WDS Links (Continued)
Field Description
WEP Key Enter a WEP key in the field. You may
enter only one key. The key length and type settings determine the length and format of the keys. Here are the guidelines for an ASCII key:
- An ASCII key may contain upper and lower characters and the numbers 0 to 9.
- An ASCII key is case-sensitive.
- The key length of 64 bits requires five ASCII characters.
- The key length of 128 bits requires 13 ASCII characters.
Here are the guidelines for a hexadecimal key:
- A hexadecimal key may contain the letters A to F and numbers 0 to 9.
- The key length of 64 bits requires 10 hexadecimal characters.
- The key length of 128 bits requires 26 hexadecimal characters.

WPA Personal The WPA Personal parameters are shown in Figure 22 and described

in Table 10 on page 76.
Figure 22. WPA Personal on WDS Bridges
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Chapter 3: Manage Menu
Table 10. WPA Personal on WDS Links
Field Description
SSID Enter a name for the new WDS link. The
SSID should be different from all the other SSIDs in the network. You must enter the same SSID on both access points of the bridge.
The SSID can be up to 32 alphanumeric characters.
Key Enter a shared key for the WDS bridge.
You must enter the same key on both access points of the bridge.
The key can be from 8 to 63 alphanumeric characters. The key can include special characters.
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Configuring the MAC Address Filter

The MAC address filter is used to control which wireless clients can access your network through the access point. You configure the filter by entering the MAC addresses of the wireless clients whose association requests are to be accepted or rejected by the access point. If you specify the MAC addresses of the permitted nodes, the access point accepts the association requests from the specified clients and rejects requests from all other clients. If you specify the MAC addresses of the denied clients, the device rejects association requests from the specified clients and accepts requests from all other clients.
Here are the guidelines to the MAC address filter:
The access point has only one MAC address filter.
You may activate or deactivate the filter on the individual VAPs,
such that you have filtering on some VAPs and no filtering on others.
AT-TQ2450 Wireless Access Point User’s Guide
You need to know the MAC addresses of the wireless clients
whose association requests the access point is to accept or reject.
You need to know the VAPs where you want to activate the
filtering. Activating filtering on the VAPs is performed from the “Modify Virtual Access Point Settings” window, described in “Configuring Virtual Access Points” on page 54.
To configure the MAC address filter, perform the following procedure:
1. Select MAC Filtering Settings from the Manage menu.
The access point displays the “Configure MAC Filtering of Client Stations” window, shown in Figure 23 on page 78.
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Figure 23. Configure MAC Filtering of Client Stations Window
2. For the Filter parameter, select one of the following:
Allow only stations in list: Select this option if you want the access
point to accept association requests from the wireless clients whose MAC addresses you enter in the filter, and to reject association requests from all other clients.
Block all stations in list: Select this option if you want the access
point to reject association requests from the wireless clients whose MAC addresses you enter in the filter, and to accept association requests from all other clients.
3. To enter the MAC addresses of the clients, use the fields next to the Add button. After entering an address, click the Add button. You may enter only one address at a time. You may not enter broadcast or multicast addresses.
4. If you want to remove an address, click the address in the list and then the Remove button. You may remove only one address at a time.
5. After adding the MAC addresses, click the Update button to activate and save your changes on the access point.
6. From the Manage menu, select VAP.
7. In the Modify virtual access point settings window, use the MAC Filtering column to activate filtering on the individual VAPs.
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For further information on the window, refer to “Configuring Virtual Access Points” on page 54.
AT-TQ2450 Wireless Access Point User’s Guide
8. Click the Update button in the window to activate and save your changes.
At this point, the access point begins to accept or reject association requests from the wireless clients, as defined by the filter.
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Apr 22 09:10:45 syslog: Rogue AP found: The MAC address of the Rogue AP is c0:8a:de:68:32

Generating Event Messages for Unknown Access Points

The access point can alert you with event messages if it detects unknown access points. It stores the messages in the event log and can also send them to a syslog server on your network. Figure 24 is an example of the message.
Figure 24. Event Message for Unknown Access Points
At pre-defined time intervals, the access point compares the MAC addresses of neighboring access points against a list of approved addresses that you create, and generates event messages for access points whose MAC addresses are not in the approved list.
Here are the feature guidelines:
Enabling Event
Messages for
Unknown Access
Points
If you want the event messages sent to a syslog server, you must
have a syslog server on your network and you need to configure the syslog client on the access point, as explained in “Configuring the Syslog Client” on page 118.
You need to know the MAC addresses of known neighboring
access points. You use the addresses to create a list of approved devices when you configure the feature. The access point does not send event messages for devices in the list. To view the MAC addresses of neighboring access points, refer to “Viewing Neighboring Access Points” on page 120.
To configure the access point to generate event messages when it detects unknown access points, perform the following procedure:
1. Select Pre-Configured Rogue AP from the Manage menu.
The access point displays the “Configure Pre-Configured Rogue AP” window shown in Figure 25 on page 81.
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AT-TQ2450 Wireless Access Point User’s Guide
Note
Figure 25. Configure Pre-Configured Rogue AP Window
2. Click the Enabled dialog circles for the AP Detection for Radio options. Radios 1 and 2 are the 2.4 and 5 GHz radios, respectively.
You may activate one or both radio detections. If you are only interested in receiving event messages of unknown access points on one radio, activate that radio detection. If you are interested in receiving event messages for both radios, enable both options.
You cannot configure the feature parameters until you enable at least one of the access point detections.
3. Use the Rogue AP Interval pull-down menu to select the intervals at which the device tests for unknown access points. The range is 15 minutes to four weeks. The default is 15 minutes.
4. If there are neighboring access points you want to add to the approved list so that the access points does not generate event messages when it detects them, enter the address of one of them in the fields below the list and click the Add button. You may add only one MAC address at a time.
5. Repeat step 4 to add more access points to the approved list. You may add up to 200 addresses.
6. To remove a MAC address from the list, click the address and then click the Remove button. You may delete only one address at a time from the list.
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7. Click the Update button to activate and save your changes on the access point.
The access point tests for unknown access points when you click the Update button and, if it finds an unknown device, enters an event message in the event log and sends the message to the syslog server. The access point repeats the test at the next time interval.
Disabling Event
Messages for
Unknown Access
Points
To stop the access point from generating event messages when it detects unknown access points, perform the following procedure:
1. Select Pre-Configured Rogue AP from the Manage menu.
The access point displays the “Configure Pre-Configured Rogue AP window” shown in Figure 25 on page 81.
2. Click the DIsabled dialog circles for the AP Detection for Radio options. Radios 1 and 2 are for the 2.4 and 5 GHz radios, respectively.
The access point stops generating event messages for unknown access points.
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AT-TQ2450 Wireless Access Point User’s Guide

Configuring the Access Point for the Optional AT-UWC Program

The optional AT-UWC Unified Wireless Controller is a management program for the AT-TQ2450 Access Points. It lets you centralize the task of managing the access points in your network.
To use the program, you install it on one of your management workstations and then configure the controller client on the access point by entering the IP addresses of the management workstations. You cannot manage an access point with the program until you have entered the IP address of the management workstation in the controller client.
There are two ways to configure the controller agent:
You can use the “Configure Managed Access Port Parameters”
window to enter the IP address of the management workstation with the AT-UWC programs, as explained in this section.
You can use a DHCP server that supports option 43 to supply the
IP address of the management workstation with the program to the access point. This manual does not explain how to configure DHCP option 43.
Enabling the
Controller Client
To configure the controller client, perform the following procedure:
1. From the Manage menu, select Managed Access Point Settings.
The access point displays the “Configure Managed Access Point Parameters” window in Figure 26.
Figure 26. Configure Managed Access Point Parameters Window
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2. Click the Enabled dialog circle for the Managed AP Administrative Mode parameter. This is the default setting.
3. Enter the IP addresses or domain names of up to four controllers in the Controller IP Address fields. The controllers are management workstations that have the AT-UWC program.
The access point queries the controllers in the order in which they are listed, starting with IP address 1. Please observe the following guidelines if you specify the controllers by their domain names:
The first character must be alphanumeric. It cannot be a special
character.
The last character cannot be a hyphen or period.
4. Click the Base IP Port field and enter the starting TCP/UDP port number of the range of 10 port numbers that the access point uses to communicate with the controller. Here are the guidelines to setting the base IP port:
The range is 1 to 65000. The default is 57775 for the range 57775
to 57784.
You must assign the same value to the root and satellite access
points.
You must also enter the same value on the controller.
5. Click the Edit dialog box for the Pass Phrase field to remove the check mark.
6. Click the Pass Phrase field and enter the passphrase for the access point. Here are the guidelines for the passphrase:
You must assign the same passphrase to the root and satellite
access points of a group.
The passphrase can be from 8 to 63 characters.
It can consist of letters and numbers, but no spaces.
It is case sensitive.
You must enter the same passphrase on the controller.
You may leave the passphrase blank.
7. Click the Edit dialog box again for the Pass Phrase field.
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8. For the WDS Managed Mode parameter, click the Root AP dialog circle if the unit is to be the root access point and communicate with the controller through its LAN port, or the Satellite AP dialog circle if the device is to communicate with the controller through a root access point.
AT-TQ2450 Wireless Access Point User’s Guide
9. For the WDS Managed Ethernet Port parameter, do one of the following:
If you are configuring the root access point, click the Enabled
dialog circle to enable the LAN port on the device. The LAN port must be enabled on the root device.
If you are configuring a satellite unit and the LAN port is connected
to a network device, click the Enabled dialog circle.
If you are configuring a satellite unit and the LAN port is not
connected to a network device or the port is connected to a device but is not to communicate with it, click the Disabled dialog circle. This is the default setting.
10. If you are configuring a satellite unit, click the WDS Group Password field and enter a password for WPA2 Personal authentication. Here are the guidelines for the password:
You must assign the same password to all satellite access points
of a group.
The password can be from 8 to 63 characters.
It can consist of letters and numbers.
It is case sensitive.
The password may contain special characters, such as @ and #,
and spaces.
You must enter the same password on the controller.
Leave this field blank if you are configuring the root access point: The root device gets the password from the controller.
11. Click the Update button to activate your changes and save them in the configuration file.
When you click the Update button, the access point attempts to contact the controller if you enabled the controller agent. The mode of communication depends on whether the access point is functioning as the root device or a satellite node. A root access point communicates with the controller through its LAN port, while a satellite unit communicates with it over a wireless connection to the root access point.
At this point, the access point queries your network for the controller specified in the Controller IP Address 1 field of the window. If it receives a response, it disables web browser and SNMP management so that it can only be managed from the controller. If the access point does not receive a response in five seconds, it queries the controller in the next address field, and so forth. If it does not receive a response from any of the controllers, it continues to operate as a stand-alone unit.
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Note
Note
If the access point is successful in contacting a controller, your web browser management session is interrupted.
12. To continue managing the device, you must use the controller.
Disabling the
Controller Client
This procedure explains how to disable the controller client and return the device to the stand-alone mode.
Disabling the controller client may disrupt the operations of your network because it requires interrupting the communications link between the access point and controller. To minimize the disruption to your network users, you should only perform this procedure during periods of low network activity, such as during non-business hours.
Before you can disable the controller client, the communications link between the access point and the controller has to be interrupted. This is because the access point does not allow you to manage it with a web browser or SNMP while it has a link to the controller. Here are two ways to interrupt the link between the device and controller:
If the access point is the root device, disconnect the Ethernet cable
from the LAN port.
If the access point is a satellite unit, move it onto a network that
does not have a root device.
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After you have interrupted the link between the access point and controller, you should be able to establish a web browser management session with the device and disable the client.
To disable management of the access point with the AT-UWC product, perform the following procedure:
1. From the Manage pull-down menu, select Managed Access Point Settings. This displays the window in Figure 26 on page 83.
2. Click the Disabled dialog circle for the Managed AP Administrative Mode option.
3. Click the Update button to activate and save your changes on the access point.
The access unit now operates as a stand-alone unit.

Chapter 4

Cluster Menu

This chapter describes the management functions of the Cluster menu. The chapter contains the following sections:
“Overview” on page 88
“Planning the Cluster” on page 95
“Creating or Adding Access Points to a Cluster” on page 96
“Managing the Access Points of the Cluster” on page 99
“Removing an Access Point from a Cluster” on page 100
“Viewing the Wireless Clients of the Cluster” on page 101
“Using Automatic Channel Assignments” on page 103
“Viewing the Neighboring Access Points of the Cluster” on page 107
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Overview

A cluster is a group of two or more AT-TQ2450 Access Points that have similar configurations and are managed as a single unit. When you change a parameter on one unit of a cluster, your change is automatically communicated to the other units, which change the same parameter. This can simplify the task of managing units that have nearly identical configurations.
The parameters of the access points of a cluster are divided into shared and non-shared parameters. Shared parameters have the same settings on all the access points of the cluster. Changing the setting of a shared parameter on one unit automatically changes the same parameter on the other units. For instance, the MAC filter, which is used to control access by wireless clients to the access point, is a shared parameter because your changes to the feature on one access point are automatically sent to the other access points in the same cluster.
In contrast, changes to non-shared parameters are not communicated to the other members of the cluster. Consequently, the access points of the cluster can have different settings for their non-shared parameters. To configure these parameters, you have to establish individual management sessions on the units. The IP address of an access point is an example of an non-shared parameter because each unit must have a unique IP address. There are also non-shared functions, such as viewing event messages and statistics, because each unit is responsible for maintaining its own event messages log and statistics table.
Table 11 lists the shared and non-shared features and functions of the access points in a cluster.
Table 11. Shared and Non-shared Parameters on the Access Points in a Cluster
Menu Menu Selection Shared Parameters
Basic Settings Basic Settings - Administrator Name
- Password
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Non-shared Parameters
- IP Address
- MAC Address
- Firmware Version
- Build Number
- Time since system-up
- System Name
- System Contact
- System Location
AT-TQ2450 Wireless Access Point User’s Guide
Table 11. Shared and Non-shared Parameters on the Access Points in a Cluster (Continued)
Menu Menu Selection Shared Parameters
Non-shared Parameters
Manage Ethernet Settings None - MAC Address
- Management VLAN ID
- Untagged VLAN
- Untagged VLAN ID
- Connection Type
- Static IP Address
- Subnet Mask
- Default Gateway
- DNS Nameservers
- Directed Broadcast ICMP Reply
Wireless Settings - Radio (On or Off)
- Mode
- MAC Address
- Channel
- Station Isolation
Radio - Status (On or Off)
- Mode
- Channel Bandwidth
- Primary Channel
- Short Guard Interval Supported
- Multidomain Regulatory Mode
- Channel
- Eligible Channels
- Periodical Channel Refresh
- Beacon Interval
- DTIM Period
- Maximum Stations
- Transmit Power
- Protection
- Fragmentation Threshold
- RTS Threshold
- Fixed Multicast Rate
- Rate Sets
- MCS (Data Rate) Settings
- Broadcast/Multicast Rate Limiting
- Rate Limit Rate Limit Burst
VAP - New and modified
VAPS
New VAPs are distributed as disabled on the access points of the cluster and can be manually enabled on the individual units.
MAC Filtering - Filter
- Stations List
- VAP status
None
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Table 11. Shared and Non-shared Parameters on the Access Points in a Cluster (Continued)
Menu Menu Selection Shared Parameters
Pre-configured Rogue AP
Managed Access
- AP Detection for Radio
- Rogue AP Interval
None - Managed AP
Point
Non-shared Parameters
- Access Points List
Administrative Mode
- Controller IP Address
- Base IP Port
- Pass Phrase
- WDS Managed Mode
- WDS Managed Ethernet Port
- WDS Group Password
Cluster Access Points None - Location
- Cluster Name
Channel Management
- Stop or start channel management
- Lock channels
- Advanced parameters
Status Events - TQ2403 Compatible
- Relay Log
- Relay Host
- Relay Port
Transmit/Receive None Statistics are not shared
Client Associations This menu selection
- Persistence
- Severity
- Depth
- Event Messages are not shared among the units of the cluster and have to be viewed from individual management sessions of the units.
among the units of the cluster and have to be viewed from individual management sessions of the units.
only displays the clients of the current access point. To view the clients of a cluster, refer to “Viewing the Wireless Clients of the Cluster” on page 101
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Table 11. Shared and Non-shared Parameters on the Access Points in a Cluster (Continued)
Menu Menu Selection Shared Parameters
Neighboring Access Points
- AP Detection for Radio 1
- AP Detection for Radio 2
Managed AP
None The IP addresses of
DHCP
Non-shared Parameters
This menu selection only displays the neighboring access points of the current access point. To view the neighboring access points of the cluster, refer to “Viewing the Neighboring Access Points of the Cluster” on page 107
devices with the AT­UWC Unified Wireless Controller program are not shared by the access points. You have to configure this on the DHCP server with Option 43 for each access point.
Services QoS - AP EDCA Parameters
-Wi-Fi Multimedia (WMM)
- Station EDCA Parameters
- No Acknowledgement
- APSD
None
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Table 11. Shared and Non-shared Parameters on the Access Points in a Cluster (Continued)
Menu Menu Selection Shared Parameters
SNMP -SNMP (Enabled or
Disabled)
-Read-only community name
- Port Number the SNMP agent will listen to
- Allow SNMP set requests
- Read-write community name
- Restrict the source of SNMP requests to only the designated hosts or subnets
- Hostname, address, or subnet of Network Management System
- Community name for traps
- Trap type to send
- Hostname or IP address
Non-shared Parameters
None
LED None - LED (On or Off)
HTTP/HTTPS None - HTTPS Server Status
- HTTP Server Status
- HTTP Port
- Generate SSL Certificate
- Maximum Sessions
- Session Timeout (minutes)
NTP - Set System Time
- NTP Server
- System Date
- System Time
- Interval to Synchronize
- Time Zone
- Adjust for Daylight Savings Time
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AT-TQ2450 Wireless Access Point User’s Guide
Table 11. Shared and Non-shared Parameters on the Access Points in a Cluster (Continued)
Menu Menu Selection Shared Parameters
Non-shared Parameters
Maintenance Configuration - Disable Reset Button - To Restore the Factory
Default Configuration
- To Save the Current Configuration to a Backup File
- To Restore the Configuration from a Previously Save File
- To Reboot the Access Point The above functions have to be performed on the individual access points of the cluster.
Here are the guidelines to creating a cluster of access points:
You should only use this feature on access points that are to have
identical shared parameters.
A cluster can have up to sixteen access points.
The access points of a cluster share many parameter settings, but
operate as individual units.
The manager login name and password are shared parameters.
Consequently, all the access points of a cluster always have the same login name and password. Changing the values on one unit changes it on all of them. When you are creating a new cluster, the units use the login name and password on the first unit where you enable the cluster feature.
The access points of the cluster must have different IP addresses.
Clustering is not supported across broadcast boundaries or
routers. The access points of a cluster must reside in the same subnet or network and the network portions of their IP addresses have to be the same.
The access point searches for other access points of the cluster
using the LAN port, but not the radios. Consequently, the access points of a cluster need to be able to communicate with each other through their LAN ports.
When you activate clustering on an access point, the unit queries
the network on its LAN port for an existing cluster with the same cluster name as its own. If there is no existing cluster, the access point becomes a cluster of one unit. If there is a cluster with the same name, the new access point changes its parameters to
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match the settings of the units in the existing cluster and then joins the cluster.
The access points of a cluster must be assigned a name. The
name must be the same on all the units.
You may create more than one cluster in a subnet by giving the
clusters different names.
You may manage the access points by starting a management
session on any unit in the cluster.
You may not combine the cluster and WDS bridge features on the
access points.
The cluster feature on the AT-TQ2450 Access Point is not
compatible with similar features on products from Allied Telesis or other companies.
The Country setting must be the same on the access points in a
cluster and must be set before the devices are added to a cluster. For instructions, refer to “Setting the Country Setting” on page 37.
The access points use encryption to protect the parameter settings
when they transmit them to each other.
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Planning the Cluster

When you create a new cluster, it is important to consider the order in which you enable the feature on the access points. This is particularly true if you have already configured the settings of one of the units. If you want the other units to adopt the configuration of the pre-configured unit when they initially form the cluster, you have to activate the cluster feature on the pre-configured unit first because the initial configuration of a new cluster is always set by the access point on which the feature is activated first. When the other units join the cluster, they adopt the configuration of the units on which the feature is already enabled.
Here is an example. Assume that you intend to create a cluster of three access points and you have not configured any of the units. In this case, you can activate clustering on the units in any order. The access points adopt the settings of the first unit on which you activate the cluster feature.
Now assume that you already configured the parameters of one of the units (A) and you want the other two units (B and C) to have the same configuration as unit A when they join the cluster. In this situation, it is important that you start the cluster feature on unit A first, before units B and C. That way, when units B and C join the cluster, they adopt the settings of unit A. If, instead, you activate clustering on unit B or C first, unit A would lose its configuration settings when it joins the cluster and adopts the settings of unit B or C.
AT-TQ2450 Wireless Access Point User’s Guide
After the access points join the cluster, all their shared parameter settings are the same. So if you need to power off or reboot the units, the order in which you do it is not important because they all have the same settings.
Another important rule to remember is that you should never add a new access point to an existing cluster when the other units are turned off. Otherwise, when you power them on, they discard their current settings and adopt the settings from the new unit, which may not have the correct configuration for the units of the cluster.
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Note
Note

Creating or Adding Access Points to a Cluster

To create a cluster or add access points to an existing cluster, perform the following procedure:
1. Select Access Points from the Cluster menu.
The access point displays the “Manage access points in the cluster” window, shown in Figure 27.
Figure 27. Manage Access Points in the Cluster Window
When an access point is added to an existing cluster, it automatically changes its shared parameter settings to match the settings of the other units in the cluster. If it does not find any access points in its cluster, it retains its current settings.
You cannot configure the Location and Cluster Name fields in the window while clustering is active on the access point. If the fields are deactivated, click the Stop Clustering button to stop the feature until you have configured the fields.
2. Select the Location field and enter a description for the access point, such as its location, a name, or its IP address. The more unique the name, the easier it is to identify this unit from the other units in the cluster. The description can be from 1 to 128 characters. Spaces and special characters are allowed. This location is different from the
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AT-TQ2450 Wireless Access Point User’s Guide
System Location field in the “Provide basic settings” window, shown in Figure 5 on page 26.
3. Select the Cluster Name field and enter the name of the cluster. If the access point is the first member of a new cluster, enter a new name. If the access point is to be a member of an existing cluster, enter the name of the existing cluster. The name has to be the same on all the access points in the cluster and can be from 1 to 128 characters. Spaces and special characters are allowed. The cluster name is case sensitive.
4. Click the Update button to activate and save your changes on the access point.
5. Click the Start Clustering button to start the clustering feature on the access point.
At this point, the access point queries the network on the LAN port for a cluster of the same name as its own, and does one of the following:
If it does not find any units with the same cluster name, it operates
as a cluster of one access point and does not change its current parameter settings.
If it finds one or more units with the same cluster name, it changes
its shared parameters to match the settings on the other units in the cluster.
6. Refresh the web browser window or go to another management window and then return to the “Manage access points in the cluster” window to update the window.
If the access point found other units with the same cluster name, it displays them in the window. Figure 28 on page 98 shows a cluster of two units.
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Figure 28. Active Cluster in the Manage Access Points in the Cluster
Window
7. Any changes you now make to the shared parameter settings of the access point are transferred to the other units in the cluster.
8. To end your management session of the cluster, click Log Off in the upper right corner of the window.
9. To add another access point to the cluster, start a management session on the unit and repeat this procedure.
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Managing the Access Points of the Cluster

Note
To manage the access points of the cluster, perform the following procedure:
1. Start a management session on any unit in the cluster.
2. Adjust the parameters on the unit. Your changes to the shared parameters on the access point are automatically transferred to the other units in the cluster. The shared parameters are listed in Table 11 on page 88.
3. To start a management session on a different unit in the cluster, select Access Points from the Cluster menu.
The access point displays the “Manage access points in the cluster” window, shown in Figure 27 on page 96.
4. From the list of access points in the window, click the IP address of the unit you want to manage. You may select only one access point.
AT-TQ2450 Wireless Access Point User’s Guide
If you are unsure as to which access point you are currently managing, you can identify it by examining the Location field in the window or the IP address in the URL field of the web browser.
5. Log on using the common user name and password of the cluster.
If you move back and forth between the same access points, you may not have to log on each time.
6. Configure the unit, as needed.
7. To end your management session of the cluster, click Log Off in the upper right corner of the window.
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Removing an Access Point from a Cluster

To remove an access point from a cluster, perform this procedure:
1. Start a management session on the unit.
2. Select Access Points from the Cluster menu.
The access point displays the “Manage access points in the cluster” window, shown in Figure 27 on page 96.
3. Click the Stop Clustering button.
The access point is no longer a member of the cluster and has to be managed as an individual unit. The device retains the cluster settings, but any new changes are not transferred to other access points.
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