Dual-link switching time
Master switchover: The switchover time of AP from R/B to R/M is 30S-1MIN. This time has nothing to do with the magnitude of the AP, but is mainly affected by the timeout of the heartbeat message between the AP and the AC.
Standby switch to master: If preemption is configured on the master device, the backup device will switch to master after the master link recovers and is online for 10 minutes.