SpectraLink NetLink e340 Handbuch

Com Wireless LAN Mobility System

onfiguration and Deployment Guide

SpectraLink's Voice Interoperability for Enterprise Wireless (VIEW) Certification

Program is designed to ensure interoperability and high performance between NetLink

Wireless Telephones and WLAN infrastructure products. The products listed below

have been thoroughly tested in SpectraLink’s lab and have passed VIEW Certification.

This document details how to configure the 3Com Wireless LAN Mobility System with

NetLink Wireless Telephones.

Certified Product Summary

VIEW Partner: 3Com: www.3com.com

WLAN Switches Managed Access PointApproved products:

WX4400

WX1200 †

WXR100

3750 †

RF technology: 802.11b/g

Radio: 2.4 – 2.484 GHz

Security : WPA-PSK and WPA2-PSK

Switch/AP software version tested: Release 4.0.15

NetLink handset models tested: e340/h340/i640 8000 Series

NetLink handset software tested: 89.119 122.010 or greater

NetLink radio mode: 802.11b 802.11b

Maximum telephone calls per AP: 10

Recommended network topology: Switched Ethernet (required)

† Denotes products directly used in Certification Testing

Service Information

The AP must support SpectraLink Voice Priority (SVP). Contact your AP

vendor if you need to upgrade the AP software.

If you encounter difficulties or have questions regarding the configuration process of the

Mobility System, please contact 3Com Corporation at 1-800-NET-3Com in the U.S., or

to find a local support telephone number at 3Com’s Global Support site, please visit:

http://www.3com.com/.

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Network Topology

The following topology was tested during VIEW Certification. It is important to note

that these do not necessarily represent all “Certified” configurations.

Both Layer 2 and Layer 3 roaming were tested. Layer 3 roaming of NetLink Wireless

Telephones requires the use of a tunnel.

Known Limitations

During VIEW Certification testing, the following limitations were discovered.

1. You cannot have WPA-PSK and WPA2-PSK configured on handsets simultaneously

within the same ESSID. The phones will not check in.

2. You must disable IGMP snooping when running SpectraLink’s SRP protocol (used

with NetLink Telephony Gateways). SRP uses multicast packets to check-in which

are not forwarded through the Wireless Switch when IGMP snooping is enabled.

When a tunneled VLAN is configured over a Layer 3 network, IGMP snooping

must be disabled each time the tunnel is established, because the virtual VLAN is

established with IGMP snooping turned on by default.

3. RF Active Scan must be disabled on AP3750 radios that are providing voice services,

including NetLink Wireless Telephones.

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Access Point Capacity and Positioning

Each site is unique in its AP requirements. Therefore, please take the following points

into account when determining how many APs are needed and where they should be

placed in the facility:

Handset range

There must be wireless LAN coverage wherever the NetLink Wireless Telephones will

be used. Adequate coverage for a NetLink Wireless Telephone can be determined by

using the Site Survey mode on the Wireless Telephone that displays dB levels and

channel when the phones are in range of an access point (within approximately a -

60dBM signal strength radius). Alternatively, you can make use of the planning

capabilities built into 3Com Wireless Switch Manager network management software to

perform a virtual site survey for voice services.

Number of handset calls per AP

The number of Wireless Telephones that can be in call simultaneously was determined

based on call quality within a lab environment. Since call quality is impacted by packet

retry rate and missed packets, test criteria was established for the maximum data rate

(11Mb/s) for phones in range of the AP.

As the Wireless Telephones move near the limits of optimal RF coverage from the AP,

they will automatically drop to lower Mb/s operation. NetLink Wireless Telephones

require approximately 15% of the available bandwidth per call for 1 Mb/s operation,

approximately 10% of the available bandwidth per call for 2 Mb/s operation,

approximately 7% of the available bandwidth for 5.5 Mb/s operation, and 5% of

available bandwidth for 11 Mb/s operations.

LAN bandwidth

Estimate anticipated peak call volume to ensure that the LAN has enough bandwidth to

handle the network traffic generated by all of the wireless devices.

WLAN bandwidth

The NetLink Wireless Telephones share bandwidth with other wireless devices. To

ensure adequate RF bandwidth availability, consider the number of wireless data devices

in use per AP when estimating the necessary number of devices.

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Access Point Setup and Configuration

Installing software

3Com Mobility System firmware cannot be downloaded from the SpectraLink Web site;

therefore, you must use the software that was shipped with your product, or contact

3Com for the latest software release.

Command, comment, and screen text key

In the sections below you will find commands, comments, prompts, system responses,

or other screen-displayed information involved in the configuration process. This key

explains the text styles and symbols used to denote them.

Text Style Denotes:

xxxxxxxx Typed command

<xxxxxxxx>Encryption key, domain name or other information specific to

your system that needs to be entered

# xxxxxxxx Comment about a command or set of commands

xxxxxxxx Prompt, system response or other displayed information

Configuring the Mobility Exchange Switch

1. Using a standard RS-232 cable, connect the Wireless Switch to the serial port of a

terminal or PC.

2. Run a terminal emulation program (such as HyperTerminal) or use a VT-100

terminal with the following configuration:

Bits per second: 9600

Data bits: 8

Parity: None

Stop bits: 1

Flow control: None

3. Press Enter three times to display the Wireless Switch login screen, and to get past

the username: prompt and the password: prompt. There are no default usernames

and passwords.

4. Type enable to enter privileged mode. There is no default password.

Service profile commands (SSID and security policy setup)

WPA2-PSK

Assume you are creating service profile “vowlan-wpa2” to define the ESSID “phones”,

as well as a WPA2-PSK security policy. The following commands are needed to set up

the service for AP3750s:

set service-profile vowlan-wpa2 ssid-name phones

set service-profile vowlan-wpa2 wpa-ie disable

set service-profile vowlan-wpa2 rsn-ie enable

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set service-profile vowlan-wpa2 cipher-tkip disable

set service-profile vowlan-wpa2 cipher-ccmp enable

set service-profile vowlan-wpa2 auth-dot1x disable

set service-profile vowlan-wpa2 auth-psk enable

set service-profile vowlan-wpa2 psk-raw <256-bit passkey>

WPA-PSK

Assume you are creating service profile “vowlan-wpa” to define the ESSID “phones”, as

well as a WPA-PSK security policy. The following commands are needed to set up the

service for AP3750s:

set service-profile vowlan-wpa ssid-name phones

set service-profile vowlan-wpa wpa-ie enable

set service-profile vowlan-wpa rsn-ie disable

set service-profile vowlan-wpa cipher-tkip enable

set service-profile vowlan-wpa cipher-ccmp disable

set service-profile vowlan-wpa auth-dot1x disable

set service-profile vowlan-wpa auth-psk enable

set service-profile vowlan-wpa psk-raw <256-bit passkey>

Radio profile commands

Assume you are creating radio profile “voice” for all radios that will be providing voice

services. The following commands are needed to set up the radio profile for the access

points:

set radio-profile voice service-profile vowlan-wpa2

# maps the service profile to the radio profile

set radio-profile voice dtim-interval

set radio-profile voice active-scan disable

# prevents the AP from going off-channel to scan

set radio-profile voice wmm disable

# wmm must be disabled for SVP to be supported

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Network topology and access point hardware configuration

The network topology and access point hardware configuration can be configured using

the Mobility System Software. Please refer to the

3Com Corporation

Mobility System

Software Configuration Quick Start Guide

or the

3Com Wireless Switch and Controller

Installation and Basic Configuration Guide for

more information.

Some useful commands are:

To create VLAN “v1” and add port 3 as a member of “v1”:

set vlan 2 name v1 port 3

# 2 is the VLAN ID - must be unique for every VLAN on the

switch

To create a configuration for a model 3750 access point that is directly attached to port 1

of a Wireless Switch:

set port type ap 1 model ap3750 poe enable

Radio configuration

During VIEW Certification, APs were tested directly connected to a port on the

Wireless Switch (e.g. port 1), then the following commands will configure a specific

access point’s radio to support the voice service:

set ap 1 radio 1 mode disable

# if the radio is currently enabled. Radio 1 is the 802.11b/g

radio

set ap 1 radio 1 radio-profile voice mode enable

# maps radio to the radio-profile and enables it

APs that are not directly connected to a port on the Wireless Switch, which 3Com calls a

distributed access point (DAP), were not tested. If they are desired, the radio is

configured with this command:

set dap 1 radio 1 mode disable

# if the radio is currently enabled. Radio 1 is the 802.11b/g

radio

set dap 1 radio 1 radio-profile voice mode enable

# maps radio to the radio-profile and enables it

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Authentication, VLAN and SVP configuration

Assume you want the voice traffic to run on VLAN “v1”. To specify that the “phones”

SSID be trivially authenticated and placed on VLAN “v1”, type the following

commands:

set authentication last-resort ssid phones local

set user last-resort-phones attr vlan-name v1

The following commands are needed to enable SpectraLink Voice Priority (SVP) via

access control list (ACL):

This rule places all IP protocol 119 (SVP) traffic on CoS queue 7 (SVP support):

set security acl ip SVP permit cos 7 119 0.0.0.0 255.255.255.255

0.0.0.0 255.255.255.255

(Optional) This rule permits all other data traffic. Do not use if the VLAN “v1” is

dedicated to voice services. Note: There is an implicit “deny all” rule at the end of the

ACL.

set security acl ip SVP permit 0.0.0.0 255.255.255.255

set security acl map SVP vlan v1 out

# maps the ACL to VLAN v1 for outbound traffic

commit security acl SVP

# activates the ACL

Be sure to disable IGMP snooping on VLAN “v1” by using the command:

set igmp disable vlan v1

Subnet roaming configuration between multiple Wireless Switches

To set up subnet roaming between two switches, a mobility domain must be configured

on both switches. Choose one of the switches to be the “seed” switch. Note: The IP

addresses used in mobility domain configuration must use the System IP address of each

switch).

The following commands are performed on the seed Wireless Switch:

set system ip-address 1.1.1.1

set mobility-domain mode seed domain-name <domain name> set

mobility-domain member 1.1.3.1

# configures the domain member

The following commands are performed on the other (member) Wireless Switch:

set system ip-address 1.1.3.1

set mobility-domain mode member seed-ip 1.1.1.1

Be sure to disable IGMP snooping temporarily on the Wireless Switch that does NOT

have the VLAN statically configured by using the command:

set igmp disable vlan v1

# the VLAN name must be specified after the “vlan” keyword

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If you have a previous mobility-domain configuration that is no longer valid, you must

clear the existing mobility-domain before a new one can be defined.

clear mobility-domain

# system will respond: success: change accepted

display mobility-domain config

# system will respond: there is no mobility domain

configuration

To check the mobility domain, use the following command:

display mobility-domain

The system will respond:

Mobility Domain name: default

Member State

1.1.1.1 STATE_UP SEED

1.1.3.1 STATE_UP MEMBER

Checking the configuration

Once the switch is configured, issue the following command at the command prompt to

check the SVP settings:

display ap qos-stats

The following information should be displayed (repeat the command to see changes):

CoS Queue Tx

===========================

port: 1 radio: 1

1,2 Background 0

0,3 BestEffort 604

4,5 Video 0

6,7 Voice 79106 # voice should have the most traffic

port: 1 radio: 2

1,2 Background 0

0,3 BestEffort 0

4,5 Video 0

6,7 Voice 0

The switch and AP are now ready for use with NetLink Wireless Telephones.

The network topology and other functions can also be configured using the Mobility

System Software. Please refer to the

3Com Mobility System Software Configuration Quick

Start Guide

3Com Mobility System Installation and Basic Configuration Guide

for more

information.

PN: 72-9966-00-D.doc Page 8

Configuration File (For Reference Only)

The following configuration file was used during VIEW Certification testing. The

configuration below includes all configuration attributes, including defaults. Use the

command display configuration all for this detailed version. To only see non-

default configuration values, use the command display configuration.

# General Configuration

set ip dns domain 3com.com

set ip dns enable

set log console enable severity error

set log session disable severity info

set log buffer enable severity error

set log trace enable severity debug mbytes 1

set web-aaa enable

set dot1x timeout supplicant 30

set dot1x timeout auth-server 30

set dot1x quiet-period 0

set dot1x reauth-max 2

set dot1x tx-period 5

set dot1x reauth-period 3600

set dot1x max-req 2

set dot1x key-tx enable

set dot1x reauth enable

set dot1x authcontrol enable

set dot1x wep-key-period 1800

set dot1x wep-rekey enable

set dot1x bonded-period 0

set prompt

set system ip-address x.x.x.x

set system countrycode US

set auto-config disable

# Security Profile

set service-profile VoWLAN-WPA ssid-name <SSID name>

set service-profile VoWLAN-WPA shared-key-auth disable

set service-profile VoWLAN-WPA wep active-unicast-index 1

set service-profile VoWLAN-WPA wep active-multicast-index 1

set service-profile VoWLAN-WPA wpa-ie disable

set service-profile VoWLAN-WPA rsn-ie enable

set service-profile VoWLAN-WPA cipher-tkip enable

# for WPA this should be disabled

set service-profile VoWLAN-WPA cipher-ccmp enable

PN: 72-9966-00-D.doc Page 9

# for WPA this should be enabled

set service-profile VoWLAN-WPA cipher-wep104 disable

set service-profile VoWLAN-WPA cipher-wep40 disable

set service-profile VoWLAN-WPA auth-dot1x disable

set service-profile VoWLAN-WPA auth-psk enable

set service-profile VoWLAN-WPA beacon enable

set service-profile VoWLAN-WPA ssid-type crypto

set service-profile VoWLAN-WPA auth-fallthru last-resort

set service-profile VoWLAN-WPA psk-raw <256-bit passkey>

set service-profile VoWLAN-WPA tkip-mc-time 60000

set radius deadtime 0

set radius timeout 5

set radius retransmit 3

set enablepass password <password>

set authentication last-resort ssid <SSID name> local

set authentication admin * local

set user last-resort-<ssid_name> attr vlan-name v1

# AP Radio Profile

set radio-profile RealRadio service-profile VoWLAN-WPA

set radio-profile RealRadio 11g-only disable

set radio-profile RealRadio beacon-interval 100

set radio-profile RealRadio dtim-interval 3

set radio-profile RealRadio max-tx-lifetime 2000

set radio-profile RealRadio max-rx-lifetime 2000

set radio-profile RealRadio rts-threshold 2346

set radio-profile RealRadio short-retry 5

set radio-profile RealRadio long-retry 5

set radio-profile RealRadio frag-threshold 2346

set radio-profile RealRadio preamble-length short

set radio-profile RealRadio auto-tune channel-config disable

set radio-profile RealRadio auto-tune power-config disable

set radio-profile RealRadio auto-tune channel-interval 3600

set radio-profile RealRadio auto-tune power-interval 600

set radio-profile RealRadio auto-tune channel-holddown 300

set radio-profile RealRadio auto-tune power-backoff-timer 10

set radio-profile RealRadio active-scan disable

set radio-profile RealRadio wmm disable

set radio-profile default 11g-only disable

set radio-profile default beacon-interval 100

set radio-profile default dtim-interval 1

set radio-profile default max-tx-lifetime 2000

PN: 72-9966-00-D.doc Page 10

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