3Com WX4400 3CRWX440095A, WXR100 3CRWXR10095A, WX1200 3CRWX120695A manual Mobility Domain Roaming

8	CONFIGURING AND MANAGING
	MOBILITY DOMAIN ROAMING

A Mobility Domain is a system of WX switches and managed access points (MAPs) working together to support roaming wireless users (clients). Tunnels and virtual ports between the WX switches in a Mobility Domain allow users to roam without any disruption to network connectivity.

About the Mobility A Mobility Domain enables users to roam geographically across the

Domain Feature system while maintaining their data sessions and VLAN or subnet membership, including IP address, regardless of how the WX switches are attached to the network backbone. As users move from one area of a building or campus to another, their association with servers or other resources appears the same.

When users access a WX switch in a Mobility Domain, they become members of the VLAN designated through their authorized identity. If a user’s native VLAN is not present on the WX that he or she accesses, the accessed WX forms a tunnel to a WX in the Mobility Domain that includes the native VLAN.

In a Mobility Domain, one WX switch acts as a seed device, which distributes information to the WX switches defined in the Mobility Domain. Otherwise, the seed WX switch operates like any other Mobility Domain member.

(If your Mobility Domain uses firewalls or access controls between WX switches or AAA servers, see “Traffic Ports Used by MSS” on page 661 for the ports typically used in a Mobility Domain.)

3Com recommends that you run the same MSS version on all the WX switches in a Mobility Domain.