Network device and method executed by the network device and computer-readable medium

A first network device, including:

• a memory, on which instructions are stored;
• and
• a processor, configured to execute the instructions stored on the memory to cause the first network device to perform one or more operations comprising:
• executing channel scanning on a first main working channel of a second network device coupled to the first network device to detect a first beacon frame broadcast by the second network device;
• determining that the first beacon frame is detected within a first predetermined time duration;
• causing the second network device to automatically restart a first Wi-Fi module of the second network device based on the determination;
• receiving a beacon report from the second network device, wherein the second network device is coupled to at least one second hop extender of one or more second hop extenders;
• and
• in response to determining, based on the beacon report not containing a basic service set identifier (BSSID), that a running service volume on the at least one second hop extender is less than a third restart threshold, instructing the second network device to cause the at least one second hop extender to automatically restart a third Wi-Fi module of the at least one second hop extender.