Configuring Redundancy - NETGEAR WC7520 - ProSafe 20-AP Wireless Controller Reference Manual

ProSafe 20-AP Wireless Controller WC7520 Reference Manual
automatic failover to the secondary controller occurs. The secondary controller then takes
over all functions of the primary controller.
You can configure both redundancy and stacking, but in a system with three stacked
controllers, you can add only one redundant controller, which is the fourth controller in the
system. Typically, you would configure the primary controller in the stack also as the primary
controller in the redundancy group.
Note: The licenses on the secondary redundant controller need to match
those on the primary controller. If the licenses do not match,
redundancy does not work.
These are the requirements for redundancy to function correctly:
• Make sure that there are not more than two controllers with the same redundancy ID in
the same Layer 3 network.
• If two controllers are in the same redundancy group, you must configure one controller as
the primary controller and the other controller as the secondary controller.
• For the primary and secondary controllers in the same redundancy group, you must
configure the same values for the redundancy ID, controller IP address, primary IP
address, and secondary IP address.

Configuring Redundancy

To configure redundancy:
1. Select Stacking > Redundancy. The Redundancy screen displays.
Figure 82.
Chapter 10: Managing Stacking and Redundancy | 122