
Managing Stacking and Redundancy
165
ProSafe 20-AP Wireless Controller WC7520
5. Configure the VRRP IDs and local IP addresses of the controllers in the stack so they can
become part of the redundancy group. The settings, including the nonconfigurable fields, are
explained in the following table:
Enabling redundancy causes the wireless controller to reboot,
which might temporarily affect traffic on the managed access
points in the network.
6. Click Apply to save your settings.
Note: After you have configured redundancy, click Refresh on the
Network monitoring screens to display redundancy information (see
Monitor the Network on page 167).
Table 38. Redundancy settings
Setting Description
Controller Role This is a nonconfigurable field that shows if the primary controller functions as a
master or slave controller in the stack for which you are configuring
redundancy.
Note: For a single controller with redundancy,
the primary controller role is
always master.
Controller IP This is a nonconfigurable field that shows the IP ad
dress of the primary
controller. This IP address is transferred to the redundant controller if a failover
occurs.
VRRP ID [1-255] For each primary controller in the re
dundancy group, enter a number from
1 through 255 as the VRRP ID. This enables each primary controller to have a
un
ique relationship with the redundant controller.
Note: For a single controller with redund
ancy, there is a single primary
controller and therefore a single VRRP ID.
Local IP For each primary controller in the redundancy group, enter a local IP address.
This IP address remains assigned to the primary controller and is not
transferred to the redundant controller if a failover occurs. This allows each
primary controller to be identified before and after a failover.
Note: For a single controller with redund
ancy, there is a single primary
controller for which you need to enter a local IP address.
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