Method and device for forwarding multicast message

Abstract

The invention provides a method and a device for forwarding a multicast message, wherein the method is applied to an RRPP (Rapid Ring Protection Protocol) ring comprising a master node and at least one assistant node; and one of all nodes included in the RRPP ring is designated to be used for leading the multicast message to leave the upstream node of the RRPP ring. The method is characterized byincluding the following steps: A. the upstream node transmits a hello-multicast message carrying a designated unicast MAC (Media Access Control) address; and B. the assistant node on the RRPP ring records a port that receives the hello-multicast message, and when the assistant node as a multicast source transmits the multicast message to the multicast MAC address outside the RRPP ring, the recorded port transmits the multicast message to the upstream node. The method and the device adopted greatly save the forwarding resource when the assistance node on the RRPP ring as the multicast source transmits the multicast message to the target multicast MAC address outside the RRPP ring.

Description

technical field [0001] The invention relates to Ethernet switching technology, in particular to a method and equipment for forwarding multicast messages. Background technique [0002] At present, the ring network of Rapid Ring Protection Protocol (RRPP) is widely used in video surveillance because of its low construction cost, high reliability, and the ability to meet the requirements of video surveillance systems such as monitoring camera input and encoder distribution. It is widely used in system networking. [0003] In an RRPP ring, each device on the RRPP ring is called a node, and the role of each node is configured by the user. It is mainly divided into a primary node and a secondary node (also called a transit node). Among them, the primary node is the initiator of the active detection mechanism of the RRPP ring status, and also the decision maker to perform operations after detecting the RRPP ring failure. The secondary node is responsible for transparently transmit...

AI Technical Summary

Problems solved by technology

Those skilled in the art know that although the auxiliary node sends out multicast packets simultaneously through the two ports connected to the RRPP ring, in practical applications, only the multicast packets sent by one port are valid, specifically only one The multicast message sent by the port can be processed by the upstream node. Therefore, it can be seen that the method of sending out the multicast message simultaneously through the two ports connected to the RRPP ring in the prior art obviously greatly wastes the system forwarding resources

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