A METHOD, SYSTEM AND FUNCTION ENTITY FOR ACHIEVING THE ECHO FUNCTION OF THE BFD MECHANISM

摘要

A method, system and function entity for achieving the echo function of the BFD mechanism includes: setting the source address and the destination address in the IP head of an echo packet to be the IP address of the port which sends the echo packet, the identification parameter of the echo packet is also setted, and then sending the echo packet to the far end; after receiving the echo packet, the far end analyzes and processes the echo packet according to the identification parameter. The echo function of the bidirectional forwarding detection mechanism is simply and accurately achieved, and link faults are discovered in time.