Nortel Networks 2300 manual Configuring and Managing Mobility Domain Roaming

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Configuring and Managing

Mobility Domain Roaming

About the Mobility Domain Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 Configuring a Mobility Domain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176 Monitoring the VLANs and Tunnels in a Mobility Domain . . . . . . . . . . . . . . . . . . . 183 Understanding the Sessions of Roaming Users . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186 Mobility Domain Scenario . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

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

(If your Mobility Domain uses firewalls or access controls between WSSs or AAA servers, see Appendix , “Mobility Domain Traffic Ports,” on page 605 for the ports typically used in a Mobility Domain.)

Note. Nortel recommends that you run the same WSS Software version on all the WSSs in a Mobility Domain.

About the Mobility Domain Feature

A Mobility Domain enables users to roam geographically across the system while maintaining their data sessions and VLAN or subnet membership, including IP address, regardless of how the WSS 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 WSS in a Mobility Domain, they become members of the VLAN designated through their autho- rized identity. If a user’s native VLAN is not present on the WSS that he or she accesses, the accessed WSS forms a tunnel to an WSS in the Mobility Domain that includes the native VLAN.

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

Nortel WLAN Security Switch 2300 Series Configuration Guide