I'm searching for a solution to migrate a old C20 wireless controller to a V2110 with minimal wireless network outage. The old infrastructure is a mixed environment of AP2620/AP3620.
My first idea was to change the controller priority in the AP configuration, but this didn't work. The AP still reconnected to the old controller after reboot. If the "join" would work correct, I'm not sure if the could be the next problem - the c20 firmware is a really old 6R1.x and the V2110 use the latest 8.31.x code. Would the AP firmware upgrade work correct? I know there is a recommended upgrade path for controller, but this would cause serveral reboots and this would cause a longer outage. Any ideas?