Multicast message transmission method in bidirectional PIM (Personal Information Management) of communication equipment and communication equipment

Abstract

The invention discloses a method for forwarding multicast messages in a two-way protocol-independent multicast PIM of a communication device. The method includes: a routing device pre-creates a multicast forwarding table according to a routing protocol; According to the access control list ACL issued for each interface, when it is judged that the interface that the multicast message arrives is the interface that the multicast message should arrive, modify the virtual local area network VLAN information or virtual private network VPN of the message information to make it match the created multicast forwarding table; and forward the modified multicast message from the outbound interface corresponding to the matched multicast forwarding table. The present invention also discloses a communication device. By applying the multicast message forwarding method and the communication device described in the present invention, not only the multicast message forwarding in the bidirectional PIM can be realized, but also the communication device does not need to be based on the VLAN port number of the incoming interface. To create a multicast forwarding table, thus saving hardware forwarding resources.

Description

technical field [0001] The invention relates to the technical field of multicast message processing, in particular to a method for forwarding multicast messages in a bidirectional protocol-independent multicast (PIM) of a communication device and a communication device. Background technique [0002] PIM is a technology that uses the unicast routing table generated by static routing or any unicast routing protocol to provide routing for multicast. The routing device in the PIM network uses a VLAN port as the inbound interface of the routing device. For general PIM (non-bidirectional PIM) multicast routing protocols, only a multicast forwarding table corresponding to a VLAN port is stored in the routing device. When the multicast message arrives at the routing device, the multicast forwarding table corresponding to the VLAN port is queried in the routing device, and the multicast message can be forwarded. [0003] Bidirectional PIM is a PIM that can be forwarded in both direc...

AI Technical Summary

Problems solved by technology

However, when the number of VLAN ports used as inbound interfaces is large, the existing method needs to create more multicast forwarding tables in the routing device, which takes up more hardware (routing device) forwarding resources, especially In the case of limited hardware forwarding resources, the use of existing methods is restricted

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