179Nortel WLAN—Security Switch 2300 Series Configuration GuideConfiguring network domainsA Network Domain is a group of geographically dispersed Mobility Domains that share information over a WAN link.This shared information allows a user configured in one Mobility Domain to establish connectivity on a WSS in aremote Mobility Domain. The WSS forwards the user traffic by creating a VLAN tunnel to a WSS in the remoteMobility Domain.About the network domain featureA Network Domain allows functionality found in Mobility Domains to be extended over a multiple-site installation. Auser configured to be on a VLAN at his or her home site can travel to a remote site, connect to the network, and beplaced in his or her native VLAN. To do this, the WSS that the user accesses forms a tunnel to a WSS at the user’s homesite.Figure 1 illustrates a sample Network Domain configuration consisting of Mobility Domains at six sites connected overa WAN link.About the network domain feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179Configuring a network domain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183Network domain scenario . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
