Symptom

AP does not join back to the controller after applying any change that requires a CAPWAP tunnel restart. > AP will remain in this state while client entries gets either manually deleted or the controller times out the stale client entry.

Conditions

> 9800 WLC running 17.3.5a or above > Client roaming from the AP that is getting disconnected while CAPWAP tunnel restarts.

Workaround

Manually search for the objects pending deletion and clear those entries. Allow controller to time out the stale sessions after session timeout completes.

Further Problem Description