Cisco Wireless AP cannot register to controller failure
Due to power failure in the factory for two days, all Cisco APs could not be used after power-on, and SSID could not be searched. After checking the controller (Cisco 2504), it was found that the system time of the controller was restored to the factory value due to power failure, resulting in all APs unable to register. After modifying the controller time, all APs were registered normally.
