Users Guide

Table Of Contents
Multi-Controller AirGroup ClusterTerminologies
AirGroup Domain
An AirGroup domain is a set of controllers that are part of an AirGroup cluster. An administrator can configure
multiple AirGroup domains for a site-wide deployment. Individual local controllers can independently select
relevant multiple AirGroup domains to form a multi-controller AirGroup cluster.
AirGroup Cluster
One or several AirGroup domains can form an AirGroup cluster. AirGroup cluster can have 100 AirGroup
domains. An AirGroup domain can include a list of likely controllers which may participate in the multi-
controller AirGroup cluster. Figure 221 shows the AirGroup cluster and domain relationship:
Figure 221 AirGroup cluster and domain relationship
Active-Domain
AirGroup allows one or more AirGroup domains to be a part of the AirGroup active-domain list on a controller.
A master or local controller may participate in one or more AirGroup clusters based on its active-domain list.
The controller must set the corresponding domain as active for the controller to be part of the AirGroup
cluster.
In Figure 221, Controller 1, 2, and 3 belong to AirGroup Domain 1.
Sample AirGroup Cluster Topology
Figure
222 shows a typical master-local multi-controller deployment. In this topology, four local controllers
terminate on a single master controller.
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