Symptom
Standby 9800-WLC is stuck in recovery mode even when it has GW reachability.
Normal Condition described below:
Standby-Recovery - If Gateway goes down, standby goes to standby-recovery mode. Standby means, its state is up to date with the active. But since it does not have the other resource (Gateway) it goes to Standby-Recovery. The standby shall not be in a position to take over the active functionality when it is in standby-recovery mode. Standby-Recovery will go back to Standby without a reload, once it detects that the Gateway reachability is restored.
Conditions
9800 HA SSO Deployment - Version 17.3.1