Protection switching method and device

• Main Author: XING JIAMAO
• Format: Patent
• Language: Chinese; English
• Published: 01.10.2021
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention relates to the technical field of network communication, in particular to a protection switching method and device. The method is applied to a management device in a network, and a first BFD detection mechanism with a detection period of T is configured for a physical link between any two adjacent network devices in the network. The method comprises the steps that a first BFD fault reported by network equipment is received, if one piece of network equipment does not receive a first BFD message sent by an opposite end in continuous n periods, it is determined that the first BFD fault is detected, and n is an integer larger than or equal to 1; if it is determined that a target physical link breaks down based on the first BFD fault, a target protection group linked list associated with the target physical link is determined, and the protection group linked list associated with one physical link comprises information of all tunnels borne by the physical link; and a protection switching operation of