METHOD, DEVICE AND SYSTEM FOR IMPLEMENTING SERVICE PATH DETECTION

A method, a device and a system for implementing service path detection. Said method is applied to an SRv6 network, and comprises: a first network device generating a first message on the basis of IPv6, and sending same to a second network device, the first message comprising a first indication and identification information of a service, and the first indication being used for indicating that the first message is a detection message; and after receiving the first message, the second network device detecting, according to the first indication and the identification information of the service, a path bearing the service. A sender adds the first indication and the identification information of the service into the detection message, so that a receiver can determine that what is received is the detection message and sense a corresponding running service. In this way, the connectivity or quality of a path bearing the service is detected on the basis of the detection message, so that fine-granularity service-level