Manage Redundancy; Single Controller With Redundancy - NETGEAR ProSafe WC7520 Reference Manual

ProSafe 20-AP Wireless Controller WC7520
Figure 83.

Manage Redundancy

The wireless controller supports N:1 redundancy with failover. Redundancy is implemented
through the use of the Virtual Router Redundancy Protocol (VRRP).

Single Controller with Redundancy

You can configure two controllers to form a redundancy group. You then designate one
controller in the redundancy group as the primary controller and the other wireless controller
as the redundant controller. If the primary controller fails or is disconnected from the network,
an automatic failover to the redundant controller occurs. The redundant controller then takes
over all functions of the primary controller.
If you want to add a redundant controller to a stack of two or three controllers, see N:1
Redundancy on page 149.
Note: When a redundancy failover occurs, wireless clients might
experience a service interruption of a few seconds.
Requirements and Restrictions for a Single Controller with Redundancy
These are the requirements and restrictions for a single controller with redundancy to
function correctly:
• The primary controller and redundant controller need to be in the same management
VLAN and IP subnet.
Managing Stacking and Redundancy
147