Upgrading Software on Controller 1

Note

If you upgraded the software on the two controllers in session availability mode, you must perform a controlled upgrade on the wireless APs. For more information, see Maintaining the Wireless AP Software.

Use the standard procedures via the Wireless Assistant GUI or CLI commands to upgrade the software.

When you upgrade the software version on Controller 1, it will reboot. Consequently, the ‘availability‘ feature automatically moves both AP-1 and AP-2 from Controller 1 to Controller 2. All clients registered with these two APs get disconnected. They re-connect automatically (if configured to do so) either to a different AP or to the same one after the service is restored.

After Controller 1 reboots, all 4 APs connect to Controller 2, which is still running the older software. Controller 1 is now upgraded to the new software release and has the same prior configuration. All 4 APs are running the older software.