NETGEAR ProSafe WC7520 Reference Manual page 151

• When a failover occurs and the redundant controller takes over for a primary controller,
redundancy is no longer available for the other primary controllers in the redundancy
group.
• When you upgrade from a firmware release before release 2.2 to release 2.2, you need to
reconfigure redundancy.
Example of an N:1 Redundancy Configuration
The following figure shows an N:1 configuration with three stacked controllers and one
redundant controller before a failover has occurred.
Figure 87.
The following figure shows the N:1 settings on the Stacking/Redundancy screen before a
failover has occurred.
ProSafe 20-AP Wireless Controller WC7520
Managing Stacking and Redundancy
151