CLI Reference Guide

192 CHAPTER 5: CONFIGURING WX SYSTEM AND ADMINISTRATIVE PARAMETERS
If you use a tag value, 3Com recommends that you use the same value as
the VLAN number. The WX switch does not require the VLAN number
and tag value to be the same, but some other vendors’ devices do.
Do not assign the same VLAN multiple times using different tag values to
the same network port. Although MSS does not prohibit you from doing
so, the configuration is not supported.
Creating a VLAN You create a VLAN by using the Create VLAN wizard, which allows you to
do the following: Configure basic VLAN properties.
 Configure basic VLAN properties.
 Add ports to a VLAN.
 Configure Spanning Tree Protocol (STP).
 Configure STP port information.
 Configure Internet Group Management Protocol (IGMP).
 Configure static multicast port information.
 Configure the MSS DHCP server.
Configuring VLAN Basic Properties
In addition to defining a VLAN name and number, you can also configure
the following:
 Tunnel affinity
WX switches configured to comprise a Mobility Domain allow users to
roam seamlessly across MAP access points and across WX switches.
Although a WX that is not a member of a user’s VLAN cannot directly
forward traffic for the user, the WX can tunnel the traffic through
another WX that is a member of the user’s VLAN.
If a WX that is not in the user’s VLAN has a choice of more than one
other WX through which to tunnel the user’s traffic, the WX selects
the path based on the tunnel affinity value. This is a numeric value
that each WX within the Mobility Domain advertises for each of its
local VLANs to all other WX switches in the Mobility Domain. The WX
selects the WX with the highest affinity value for the users’ VLAN as
the path for the users’ data. If two or more WX switches have the
same tunnel affinity value, MSS randomly selects a WX.