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216 Configuring and managing Mobility Domain roaming
NN47250-500 (Version 03.01)
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 a 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.
Smart Mobile Virtual Controller Cluster
Nortel uses innovative clustering technology between WSS switches to ensure mobility across an entire wireless
network. With clustering, you can effortlessly create logical groups of WSS switches and APs which proactively share
network and user information for “Hitless” failover support. You can also create a single point of configuration for small
and large WLAN deployments to reduce the cost of installation and network management. You can add WSSs and APs
seamlessly and do not require any connectivity interruption in your existing network.
Smart Mobile Virtual Controller Clustering provides distributed network intelligence that enables fast, transparent
failover to overcome network and device interruptions. It provides a means of central configuration and distribution for
WSSs and APs on the network.
The features of cluster configuration includes the following:
• Centralized configuration of WSSs and APs.
• Autodistribution of configuration parameters to APs.
• “Hitless” failover on the network if an WSS is unavailable.
• Automatic load balancing of APs across any WSSs in the cluster.
Note. The number of APs supported on a cluster member is limited to the number supported
on an WSS. It is recommended to use larger capacity WSSs in your configuration to obtain the maximum
benefits of cluster configuration.
Configuring a Mobility Domain
The WSSs in a Mobility Domain use their system IP address for Mobility Domain communication. To support the
services of the Mobility Domain, the system IP address of every WSS requires basic IP connectivity to the system IP
address of every other WSS. (For information about setting the system IP address for the WSS, see “Configuring the
system IP address” on page 153.)
To create a Mobility Domain:
1 Designate a seed WSS. (See “Configuring the seed” on page 217.)
2 Create a list of the member WSSs. (See “Configuring member WSSs on the seed” on page 217.)
3 Configure each member WSS to point to the seed. (See “Configuring a member” on page 218.)
You can view the status and configuration of a Mobility Domain, clear members, and clear all Mobility Domain config-
uration from a WSS.