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Updated:July 21, 2014
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This document describes how to add additional licenses to the primary Wireless LAN Controller (WLC) of High Availability (HA) and avoid any conflicts that might occur in the network.
Cisco recommends that you have knowledge of these topics:
Configuration of the WLC
Configuration of the HA Access Point Single Sign On (AP SSO)
The information in this document is based on these software and hardware versions:
WLC 5500, 7500, and 8500 Series and Wireless Services Module 2 (WiSM2)
APs 700, 1130, 1240, 1250, 1040, 1260, 1600, 2600, 3500, 3600 Series and 1520 or 1550
Series Mesh APs Message Access Protocols (MAPs)
The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.
The primary WLC was affected and the user must replace it. The secondary WLC is up and all APs are attached to it. The new WLC received return material authorization (RMA) can be added with one of the failed WLCs in the HA pair. Follow the steps in this section in order to understand how to replace a WLC in active setup.
Make sure that the first WLC is the same version as the other WLC.
Configure the WLC with the same subnet management IP addresses as the previous WLC.
Configure the new WLC with HA configuration that includes redundant management, IP address, and peer primary. Enable the AP SSO.
When the AP SSO is enabled, it reboots. While it reboots, the AP SSO discovers the current active secondary, syncs the configuration, and transitions to a hot standby state.
Note: You do not need to break the HA configuration on the current active WLC or reboot the current active WLC. The configuration will be synced with the current active WLC.
There is currently no verification procedure available for this configuration.
There is currently no specific troubleshooting information available for this configuration.