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– 5508 Series Standalone controller with 50 AP license
– WiSM-2 Wireless LAN controller
– 7500 Series Standalone controller
– 8500 Series Standalone controller
– 2504 Wireless LAN controller, Release 7.5,with a minimum of 5 Permanent AP licenses
N+1 HA with HA-SKU is supported on the 2504, 5500, 7500, and 8500 Series of standalone controllers as well as the WiSM-2 WLCs.
From the primary controller, configure the backup controller on the primary to point to the secondary controller. Use the config advanced backup-controller primary backup_controller_name backup_controller_IP_address command. (See Figure 2-2.)
On the HA-SKU UDI controller, execute the config redundancy unit secondary
command to obtain support for Max AP count licenses on a given hardware. Evaluation license does not need to be enabled for this purpose.
The section below depicts the process of converting a permanent AP count WLC to a HA-SKU secondary controller.
On the permanent AP count WLC, use the config redundancy unit secondary
command to convert the controller into an HA-SKU secondary controller. In order to convert a permanent AP count controller to an HA-SKU secondary controller, it should have a minimum number of base AP count licenses; if that minimum is not met, an error message appears. (See Figure 2-3).
Figure 2-3 Secondary WLC (CLI)
On the CLI, use the show redundancy summary command to view the status of the primary and secondary controllers. (See Figure 2-4 and Figure 2-5.)
Note With release 7.5 and 7.6, the HA SKU WLC has to be rebooted after issuing the command "config redundancy unit secondary" to make APs join it.
Figure 2-4 Status of Primary WLC (CLI)
Figure 2-5 Status of HA-SKU Secondary WLC (CLI)
From the primary controller, navigate to Access Points > Global Configuration, then configure the backup controller on the primary to point to the secondary controller. (See Figure 2-6.)
On the secondary controller, navigate to Redundancy > Global Configuration, then configure the secondary controller to convert it to an HA-SKU secondary controller. (SeeFigure 2-7)
Figure 2-7 HA-SKU Secondary WLC (GUI)
Note AP SSO must be disabled to configure the controller to be an N+1 HA-SKU secondary controller.
An HA-SKU secondary controller can also be used as a primary, secondary, or tertiary controller. This can be configured under the AP specific configuration. (See Figure 2-8.)
Figure 2-8 Primary, Secondary, and Tertiary Configuration (GUI)
The configuration on HA-SKU secondary controller is the same as shown previously.