Allied Telesis AT-WL2411 User manual

Wireless
Access Point
AT-WL2411

Installation
Guide
®
PN 613-50229-00 Rev A

Copyright  2001 Allied Telesyn International, Corp.
960 Stewart Drive Suite , Sunnyvale, CA 94085 USA
All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesyn
International, Corp.
All other product names, company names, logos or other designations mentioned herein are trademarks or registered trademarks
of their respective owners.
Allied Telesyn International, Corp. 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 Telesyn International, Corp. 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
Telesyn International, Corp. has been advised of, known, or should have known, the possibility of such damages.

3
Table of Contents
Preface ......................................................................................................................................................................................................................7
PurposeofThisGuide ...........................................................................................................................................................................................7
DocumentConventions ......................................................................................................................................................................................7
Whereto FindRelatedGuides ...........................................................................................................................................................................8
ContactingAlliedTelesyn ...................................................................................................................................................................................8
OnlineSupport................................................................................................................................................................................................8
TechnicalSupportand Services................................................................................................................................................................8
TechnicalSupportE-mail Addresses.......................................................................................................................................................8
ReturningProducts ...............................................................................................................................................................................................9
FTPServer ...............................................................................................................................................................................................................10
For SalesorCorporateInformation ...............................................................................................................................................................10
Tell UsWhat You Think ......................................................................................................................................................................................10
Chapter 1
GettingStarted ...................................................................................................................................................................................................11
UnderstandingtheAT-WL2411 Universal Access Point ........................................................................................................................11
TheAT-WL2411UAP ...........................................................................................................................................................................................12
UnderstandingtheAT-WL2411LEDs....................................................................................................................................................12
UnderstandingtheAT-WL2411Ports...................................................................................................................................................13
Configuring theAT-WL2411UAP ...................................................................................................................................................................14
Chapter 2
Installing theAT-WL2411UAP ....................................................................................................................................................................18
Usingthe AT-WL2411UAPina Wireless Network ...................................................................................................................................18
UsingaUAPinaSimpleWirelessNetwork.........................................................................................................................................18
UsingMultipleUAPsandRoamingEndDevices...............................................................................................................................19
UsingUAPstoBridgeBetweenWiredLANs.......................................................................................................................................20
UnderstandingBridgingandtheUAPPorts ..............................................................................................................................................21
ConfiguringEthernet Bridging................................................................................................................................................................24
ConfiguringSecondaryLAN BridgePriority.......................................................................................................................................24
General Installation Guidelines .......................................................................................................................................................................26
DecreasingInterference.............................................................................................................................................................................26
General Stepsto Installingthe AT-WL2411UAP...............................................................................................................................27
InstallingtheAT-WL2411UAP.................................................................................................................................................................27
Establishinga Web BrowserSession .............................................................................................................................................................32

Table of Contents
4
Chapter3
Managing the AT-WL2411 Remotely ......................................................................................................................................................35
Configuringthe AT-WL2411UniversalAccess PointParameters ......................................................................................................35
ChangingtheUserNameand Password.............................................................................................................................................35
SettingtheHello Period............................................................................................................................................................................41
ConfiguringEthernet or IPTunnelPortControl...............................................................................................................................44
SettingARPMinutes...................................................................................................................................................................................45
ConfiguringtheLANID (Domain)..........................................................................................................................................................45
SettingRoot Priority ...................................................................................................................................................................................46
ConfiguringtheAPName.........................................................................................................................................................................47
Configuringthe AT-WL2411UAPas aDHCPServer.......................................................................................................................47
Configuringthe AT-WL2411UAPas aNAT Server ..........................................................................................................................51
ConfiguringGlobal Flooding...................................................................................................................................................................51
ConfiguringGlobal RFParameters........................................................................................................................................................54
Chapter4
Configuring the Radios ..................................................................................................................................................................................57
Configuringthe802.11bHRRadio ...............................................................................................................................................................57
Worldwide Frequencies forthe 802.11b HRRadio..........................................................................................................................60
ConfiguringVoiceOverIP........................................................................................................................................................................61
ConfiguringAdvanced802.11bHRRadioParameters ..................................................................................................................62
ConfiguringWEP ..................................................................................................................................................................................................65
ConfiguringWirelessHops ..............................................................................................................................................................................67
ConfiguringNodeType.............................................................................................................................................................................69
ConfiguringIEEE802.11bUAPsfor Bridging.....................................................................................................................................70
Chapter5
Configuring Filters and IP Tunnels ...........................................................................................................................................................72
ConfiguringEthernetFilters ............................................................................................................................................................................72
ConfiguringtheEthernetAddressTable.............................................................................................................................................72
UsingFrameTypeFilters...........................................................................................................................................................................73
ConfiguringAdvancedFilters.................................................................................................................................................................78
ConfiguringIPTunnel Filters ...........................................................................................................................................................................87
ConfiguringIPMulticast............................................................................................................................................................................87
ConfiguringIPAddresses..........................................................................................................................................................................88
CreatingIPTunnels .............................................................................................................................................................................................94
IPTunnel Filter Examples..........................................................................................................................................................................94
ConfiguringMode.......................................................................................................................................................................................98
ConfiguringIGMP........................................................................................................................................................................................98
Chapter6
Troubleshooting and Maintaining theAT-WL2411UAP .............................................................................................................100
AnalyzingtheAT-WL2411UAP ....................................................................................................................................................................100
ViewingAPConnections.........................................................................................................................................................................100
ViewingPort Statistics..............................................................................................................................................................................101
ViewingtheConfigurationSummary.................................................................................................................................................102
ViewingInformationAbouttheUAP..................................................................................................................................................103
UnderstandingtheLEDLightingSequence ............................................................................................................................................105
UpgradingtheAT-WL2411UAPFirmware ..............................................................................................................................................106
UsingaWebBrowser................................................................................................................................................................................106
Using aSerial Connection.......................................................................................................................................................................110
UsingaTFTPTransfer...............................................................................................................................................................................112
UpgradingOtherUAPs ....................................................................................................................................................................................113
UsingSNMP .........................................................................................................................................................................................................115
ConfiguringtheSNMPCommunity....................................................................................................................................................115
Troubleshootingthe Radio ............................................................................................................................................................................117

AT-WL2411 Wireless Access Point Installation Guide
5
Commonly AskedTechnical Support Questions ...................................................................................................................................118
GettingHelp withYourInstallation ............................................................................................................................................................121
Chapter 7
Advanced Features ........................................................................................................................................................................................122
UsingtheUAPMonitor ...................................................................................................................................................................................122
UnderstandingUAPSegments.............................................................................................................................................................122
Entering the UAPMonitor......................................................................................................................................................................123
UsingUAPMonitor Commands ...................................................................................................................................................................124
B.......................................................................................................................................................................................................................124
FX.....................................................................................................................................................................................................................125
FD....................................................................................................................................................................................................................125
FR.....................................................................................................................................................................................................................125
MR...................................................................................................................................................................................................................125
SR.....................................................................................................................................................................................................................125
UsingServiceMode Commands .................................................................................................................................................................127
SRVC...............................................................................................................................................................................................................127
FFR..................................................................................................................................................................................................................128
PN....................................................................................................................................................................................................................128
PQ....................................................................................................................................................................................................................128
UsingTestModeCommands........................................................................................................................................................................129
TEST................................................................................................................................................................................................................129
UsingConsoleCommandMode ..................................................................................................................................................................131
UsingConsoleCommands ............................................................................................................................................................................132
fb......................................................................................................................................................................................................................132
fd......................................................................................................................................................................................................................133
fdel..................................................................................................................................................................................................................133
fe......................................................................................................................................................................................................................134
script...............................................................................................................................................................................................................134
UsingSdvarsCommands ...............................................................................................................................................................................135
sdvars set serveripaddress.....................................................................................................................................................................135
sdvars set scriptfilename........................................................................................................................................................................135
sdvars set starttime...................................................................................................................................................................................136
sdvars set checkpoint ..............................................................................................................................................................................136
sdvars set terminate.................................................................................................................................................................................137
sdvars set setactivepointers..................................................................................................................................................................137
sdvars set nextpoweruptime ................................................................................................................................................................138
UsingTFTPCommands ...................................................................................................................................................................................139
tftp get...........................................................................................................................................................................................................139
tftp put..........................................................................................................................................................................................................141
tftp serverlog..............................................................................................................................................................................................142
tftp serverstart...........................................................................................................................................................................................142
tftp serverstop...........................................................................................................................................................................................142
AppendixA
Specifications ...................................................................................................................................................................................................144
PhysicalSpecifications ....................................................................................................................................................................................144
Other Specifications .........................................................................................................................................................................................145
RadioSpecifications-IEEE802.11bHR .......................................................................................................................................................146
Default Settings .................................................................................................................................................................................................147
TCP/IPSettingsMenuDefaults.............................................................................................................................................................147
SpanningTreeSettings Menu Defaults.............................................................................................................................................147
Global Flooding MenuDefaults...........................................................................................................................................................148
Global RF ParametersMenu Defaults ................................................................................................................................................148
EthernetPortConfigurationMenu Defaults....................................................................................................................................149
EthernetFilters Menu Defaults.............................................................................................................................................................149

Table of Contents
6
AdvancedFilters Menu Defaults..........................................................................................................................................................150
IPTunnelsMenu Defaults.......................................................................................................................................................................151
Tunnel FiltersMenu Defaults.................................................................................................................................................................151
Network Management Menu Defaults..............................................................................................................................................152
PasswordMenuDefaults........................................................................................................................................................................152
IEEE 802.11bHRRadio MenuDefaults...............................................................................................................................................153
Appendix B
UnderstandingIP ............................................................................................................................................................................................155
AnOverviewofIP ..............................................................................................................................................................................................155
Operation .............................................................................................................................................................................................................158
Tunnel Origination....................................................................................................................................................................................158
BuildingtheSpanningTree...................................................................................................................................................................158
EstablishingandMaintaining Tunnels...............................................................................................................................................159
Redundancy.................................................................................................................................................................................................159
UsageGuidelines ...............................................................................................................................................................................................160
Addressingfor IPStations.......................................................................................................................................................................160
Using WithStation ProtocolsOther thanIP.....................................................................................................................................160
BridgingRestrictions................................................................................................................................................................................160
IPSafeguards.......................................................................................................................................................................................................162
WirelessHop Restriction.........................................................................................................................................................................162
TunnelsManually Enabled.....................................................................................................................................................................162
IPVirtualSubnet.........................................................................................................................................................................................162
Configuringthe IPTunnel Port .....................................................................................................................................................................163
PermanentandUser-DefinedFilters ..........................................................................................................................................................165
ARPServer....................................................................................................................................................................................................165
ForwardingRestrictions..........................................................................................................................................................................165
PermanentFilters.......................................................................................................................................................................................165
User-Defined Filters..................................................................................................................................................................................166
IP/ARPSubnetFiltering...........................................................................................................................................................................166
Frame Forwarding .............................................................................................................................................................................................167
Outbound.....................................................................................................................................................................................................167
Inbound.........................................................................................................................................................................................................167
EndDevice Mobility..................................................................................................................................................................................168
Mobile IPComparison .....................................................................................................................................................................................169
ConfiguringanIPTunnel ................................................................................................................................................................................171
Topologies ..........................................................................................................................................................................................................172
IGMP .......................................................................................................................................................................................................................173
Appendix C
Glossary ...............................................................................................................................................................................................................174

7
Preface
This guide contains instructions on how to install,configure, and
manage an AT-WL2411 Wireless AccessPoint.
Purpose of This Guide
This guide is intended for network administrators who areresponsible
formanaging the wireless accesspoint.Networkadministrators should
befamiliarwith EthernetandFastEthernettechnology.
Document Conventions
This guide uses several conventions that youshouldbecome familiar
with before youbegin to perform the procedures.
Note
Notes provideadditional information.
Caution
Cautions inform you that performing oromitting a specific action
may result in equipmentdamage or loss of data.
Warning
Warningsinformyouthat performing oromitting aspecific action
mayresult in bodilyinjury.

8
Where to Find Related Guides
The AlliedTelesyn website atwww.alliedtelesyn.com contains themost
recent documentation for all of our products.All web-based
documentation forthis productandotherAlliedTelesyn products can
be downloadedfrom the web site in PDFformat.
Contacting Allied Telesyn
You can contactAlliedTelesyn technical support bytelephone, faxand
e-mail.Youcan alsocontacttechnical support online through our web
site.
Online Support Youcan request technicalsupportonlineby filling out the Online
Technical Support Form atwww.alliedtelesyn.com/forms/support.htm.
Technical
Support and
Services
Technical
Support E-mail
Addresses
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Africa
Tel: [phone]
Fax: [phone]
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Sweden,Finland
Tel: [phone]
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AT-WL2411 Wireless Access Point Installation Guide
9
Returning Products
Products for return orrepair must firstbe assigned a Return Materials
Authorization (RMA) number. A product sent to AlliedTelesynwithout a
RMAnumber will be returned to the senderatthe sender’s expense.
Toobtainan RMA number, contactAlliedTelesyn’s Technical Supportat
one of the following locations:
❑UnitedStates and Canada
Toll-free:1-800-428-4835,option 4
Fax: [phone]
❑Europe, Africa, and Middle East
Tel: [phone]
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Tel: International code + 425-481-3852
Fax: International code + 425-481-3895
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❑Asiaand SoutheastAsia
Tel: [phone]
Fax: [phone]
❑Australia
Tel: [phone]
Fax: [phone]
❑New Zealand
Tel: [phone]

10
FTP Server
If youneed a new version ofmanagement software foran Allied Telesyn
managed device andyou know the file nameofthe program, youcan
download the software by connecting directly to our FTP server at
ftp.alliedtelesyn.com. Tologin,enter‘anonymous’fortheusernameand
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Tel: [phone] (USAand Canada)
Fax: [phone]

11
Chapter 1
Getting Started
The chapter introduces and explains the AT-WL2411 wireless access
point.
Understanding the AT-WL2411 Universal Access Point
The AT-WL2411 Universal Access Point (UAP) is a high-performance,
wireless local areanetwork (LAN)access points. The UAP is designed to
bepowerfuland easytouse,andeach can be configuredasan access
point oras a point-to-pointbridge. The access point attaches to a wired
network andprovides wirelessnetwork accessforenddevices. A point-
to-point bridge connects two wired LANs and is often usedto provide
wireless communications in locations whererunning cable is difficult,
such as across roads or between buildings.
Note
This manual supports the 1.50 Enterprise software for the AT-
WL2411 access point.

12
The AT-WL2411 UAP
The AT-WL2411 access pointaccommodates one802.11bHR radio. The
AT-WL2411 can onlybe configuredas a standard access point.
Note
The AT-WL2411 with an 802.11b HR radio installed is Wi-Fi™
certified for interoperability with other 802.11b HR wireless LAN
devices.
The AT-WL2411 ships with these items:
❑PowersupplyandACpowercord
❑Mounting bracket
❑Safetyinformation
❑Antenna
Caution
Youmustusethe appropriate Allied Telesyn powersupplywith this
deviceorequipmentdamage may occur.
Understanding
the AT-WL2411
LEDs
The followingillustration identifiesthefourLEDs on the AT-WL2411.
Figure 1 System LEDs
Power Radio
Wired
LAN
Root/error

AT-WL2411 Wireless Access Point Installation Guide
13
The following describes the LEDs on the AT-WL2411.
LED Description
Power Remainson when power is applied.
Radio Flashes when a frame is transmitted or received
ontheradioport.
Wired LAN Flashes when a frame is transmittedor received
on the Ethernet port.
Root/error Flashes if this device is configured as the root.
Mayalso remain on if an error is detected.
Understanding
the AT-WL2411
Ports
The following illustration identifies the ports on the AT-WL2411.
Figure 2 System Ports
The following describes the ports on the AT-WL2411.
Port Description
Power port Used with an appropriate power cable, the power
port connects the access point toan AC power
source.
Serial port Used with anull-modem cable, the serial port
connects the access pointto a terminalor PC to
perform initial configuration.
10BaseT port Used with an appropriate cable, the 10BaseT port
connects theaccess pointto yourEthernet
network.
10BaseT
Ethernet port Serial
port Power
port
21XXT030.eps

14
Configuring the AT-WL2411 UAP
AlthoughtheAT-WL2411UAPwillworkdirectlyoutofthebox,youmust
assign it anIP address and define other basicparameters before youcan
manageit remotely.Toperform these initial configurations,youmust
use a serial connection anda terminal ora communications program
(such as HyperTerminal). This manual assumes thatyouare using a
communications program for yourinitial configuration andperforming
all other configurations remotely using the Web interface.
To perform a basic configuration of the AT-WL2411 using the default
settings,youneedthefollowing:
❑An RS-232 null-modem cable.
❑A terminal or PC with an open serial port.
Toconfigure the AT-WL2411:
1. Usethe RS-232 null-modem cable toconnect the serial porton the
UAP to aserial porton yourPC.
2. Open yourcommunications program andconfigure theserial
communications parameters onyourPCto:
Baud 9600
Databits 8
Parity no
Stopbit 1
Flow control no
3. ConnectthepowercabletotheUAPandtoapowersource.TheUAPs
have no On/Off switch, so each UAPboots as soon as you apply
power.

AT-WL2411 Wireless Access Point Installation Guide
15
4. Press Enter when the message "Starting system" appearson your PC
screen.The login screen appears.
Figure 3 Login Screen

16
5. TypethedefaultusernameATILANandpressEnter,andthentypethe
default passwordATILANand press Enter.TheConfiguration menu
appears.
Figure 4 Configuration Menu
6. To use DHCP to automatically assign an IP address,configure the
following parameters in the TCP/IP Settingsmenu:
DHCP Mode Set to<Enabled, ifIP Address is zero>.
DHCP ServerName The name of the DHCP serverthattheAT-
WL2411 is to access for automatic address
assignment. If no server name is specified,
theAT-WL2411respondstooffersfromany
server.
To assign an IP address manually,configure these parameters in
the TCP/IP Settings menu:
IP Address A unique IPaddress.
IP SubnetMask The subnet maskthat matches the other
devices in yournetwork.
IP Router(Gateway) The addressof the routerthat will forward
frames if the AT-WL2411 will communicate
with devices on asubnetwork.

AT-WL2411 Wireless Access Point Installation Guide
17
7. IfyouareconfiguringaAT-WL2411,youmustconfigureNodeTypein
theWireless Bridging menuin the802.11b Radio menu. Configure
Node TypeasMasterifthisradiowill communicatewithenddevices;
configureitasStationifyouareconfiguring aWAPandthisradiowill
communicate with a UAP on the wired network. For more
information, see ConfiguringNodeTypeon page 69.
8. Save theconfiguration.
9. Disconnect the null-modem and power cables.
For optimal performance,you may need toset additional parameters.
For more information,see Chapter 3, Managing the AT-WL2411
Remotely onpage 35.
You are now readyto install the AT-WL2411 in your network. See
General Installation Guidelineson page 26.

18
Chapter 2
Installing the AT-WL2411 UAP
This chapter explains how the AT-WL2411 functions in a network and
how to install the AT-WL2411 UAP. This chapter also explains bridging
and how to establish a Web browsersession.
Using the AT-WL2411 UAP in a Wireless Network
In general, the AT-WL2411 UAP forwards data between end devices and
the wired network.The AT-WL2411 accommodates one radio. Use the
AT-WL2411 when you donotneedmixedradios or theAT-WL2411 is
configured as a station atthe remote end ofa wireless hop to a
secondaryLAN.
TheAT-WL2411UAP supports avariety of networkconfigurations.These
configurations are explained inthis section.
Using a UAP in a
Simple Wireless
Network
You can use the UAP toextend your existingEthernetnetworkto
includewireless nodes.The UAPconnects directly toyourwired
network,andtheenddevicesformanetworkthatfunctionsasawireless
extension of thewired LAN.

AT-WL2411 Wireless Access Point Installation Guide
19
In a simple wireless network,a single UAP on the wired network serves
as a transparent bridge between the wired networkand end devices.
Theend devices communicateexclusivelywith devices on the wired
network;they do notcommunicate with other end devices.
Using Multiple
UAPs and
Roaming End
Devices
For larger or more complex environments, you can install multipleUAPs
so end devices can roam from one UAP toanother. Multiple UAPs
establish coverage areas or cells similar to those of a cellular telephone
network.End devicescanconnect with anyUAPthat iswithin range and
belongs tothe same network.
Host
UAP
Ethernet

20
With the UAP multichannel architecture,youcan have more thanone
UAP within the same cell area to increase throughput.In addition,
overlapping radiocoverage cells offerredundancy for critical
applicationsso that coverage is notlost if a single UAPorradio fails.
Using UAPs to
Bridge Between
Wired LANs
You can use UAPs to create a wireless or point-to-pointbridge between
two LANs. Youcan have aUAP wiredtoa network in one building and
havea secondUAP wiredtoa networkinanotherbuilding. Wired clients
in both buildings can then communicate witheach other overthe
wireless bridgecreatedbytheUAPs. This configuration is useful in a
campus environment where pavement orother objects prevent
installation of awired link.Forinformationabout configuringUAPs for
point-to-pointbridging, seeChapter 4,"Configuring theRadios."
Using UAPs to Bridge Between Wired LANs
Host
Ethernet
UAP
UAP
UAP
UAP
Host
UAP
Ethernet Ethernet
UAP
Host