Node protection method, device, electronic equipment, and medium

An electronic equipment, wherein the electronic equipment comprises:

• a processor;
• a transceiver;
• and,
• a machine readable storage medium storing machine executable instructions capable of being executed by the processor;
• the machine executable instructions cause the processor to execute:
• obtaining a first service packet, of which a first SRH extension header contains a first SID list and a preset flag bit, the first SID list containing a primary SID of a primary tail node on a primary path for forwarding the first service packet and a backup SID of a backup tail node, the preset flag bit being set to a first value indicating that the first SRH extension header carries the backup SID;
• forwarding the first service packet;
• wherein, in the event that the electronic equipment is an endpoint node or relay node on the primary path other than the primary tail node, the machine executable instructions specifically cause the processor to execute:
• receiving a second service packet sent by a second node, the second service packet containing a first IPv6 basic header and a second SRH extension header, the second SRH extension header containing a second SID list and the preset flag bit, the preset flag bit being set to the first value indicating that the second SRH extension header carries the backup SID;
• updating a destination address in the first IPv6 basic header based on a node status of the primary tail node, a node status of the backup tail node, and the second SID list, to obtain the first service packet.