Method for detecting multicast path state of data link layer and network equipment

Abstract

The invention provides a method for detecting a multicast path state of a data link layer and network equipment. The method comprises the following steps: first network equipment sends a detection message to second network equipment, wherein the second network equipment is a next hop, facing a multicast source, of the first network equipment on a multicast path; then the first network device receives a response message from the second network device, wherein the response message comprises a plurality of equipment identifiers which are arranged in sequence; wherein the plurality of sequentiallyarranged device identifiers are used for identifying a plurality of network devices which are sequentially arranged on the multicast path towards the direction of the multicast source, the last device identifier is the device identifier of the remote device, and the response message indicates that the path between the first network device and the remote device in the multicast path is normal. According to the technical scheme, the multicast path in a normal state can be quickly obtained, the multicast path state detection efficiency can be improved, and the fault positioning speed can be increased.

Description

technical field [0001] The present application relates to the communication field, and in particular to a method and network equipment for detecting the state of a data link layer multicast path. Background technique [0002] Internet Group Management Protocol Snooping (Internet Group Management Protocol Snooping, IGMPSnooping) is configured on the data link layer (ie, layer 2) multicast device, through the IGMP between the upstream network layer (ie, layer 3) device and the downstream user host Packets are analyzed, and Layer 2 multicast forwarding tables are established and maintained to realize point-to-multipoint on-demand distribution of multicast data packets at the data link layer. In Layer 2 multicast services, due to the point-to-multipoint forwarding of multicast data packets, it is difficult to quickly determine the path status and fault location when the service of a multicast receiver is interrupted. [0003] Such as figure 1 As shown, when the Layer 2 multica...

AI Technical Summary

Problems solved by technology

In Layer 2 multicast services, due to the point-to-multipoint forwarding of multicast data packets, when the service of a multicast receiver is interrupted, it is difficult to quickly determine the path status and fault location

The existing method is to manually troubleshoot equipment E, equipment F, equipment H, equipment I, and equipment J one by one to determine the normal path and the faulty equipment or path, which takes a long time

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