Forwarding method of multicast messages and router

Abstract

The invention discloses a forwarding method of multicast messages and a router, wherein the method is applied in the router comprising a software processing device corresponding to a software wide area network interface and a hardware processing device corresponding to a hardware exchange interface; a connecting channel is arranged between the software processing device and the hardware processing device; the method comprises the following steps: any of the software processing device and the hardware processing device receives the multicast messages on a corresponding interface thereof; the multicast messages are transmitted to the other one of the software processing device and the hardware processing device by the connecting channel; the other one device receives the multicast messages, determines an outgoing interface forwarding the multicast messages and forwards the received multicast messages according to the self corresponding interface included in the determined outgoing interface. The invention can realize forwarding of multicast messages by utilizing combination of the software wide area network interface and the hardware exchange interface in the same router.

Description

technical field [0001] The invention relates to network communication technology, in particular to a forwarding method and routing equipment for multicast messages. Background technique [0002] In network communication technology, the multicast mode is widely used due to its many advantages such as reducing network load. In the multicast mode, by using a specific multicast address, the multicast message can be transmitted to a multicast group (multicast group). Specifically, when the information sender sends a data message to a group of users (in the multicast mode, the data message can be called a multicast message, and the data message is collectively referred to as a multicast message hereinafter), It does not need to send a multicast message to each user, but only needs to send the multicast message to a specific multicast, and all users who join the multicast can receive this multicast message. In this way, for the information sender, it only needs to send the multic...

AI Technical Summary

Problems solved by technology

Wherein, the operating speed of the hardware switching interface is faster than that of the software WAN interface on the router; however, since the hardware switching interface on the Layer 3 switch is an interface processed by hardware, this will cause the hardware on the Layer 3 switch to The switching interface cannot provide complex services such as refined quality of service (QoS)

[0005] Visible, in the forwarding method that realizes multicast message that provides in the prior art, a kind of is to utilize router to carry out the forwarding of multicast message on software WAN interface both inbound interface and outbound interface; But, because software WAN interface is It is processed by software, which will reduce the speed of forwarding multicast packets by the software WAN interface; the other is to use a Layer 3 switch to forward multicast packets on both the incoming and outgoing interfaces of hardware switching interfaces, but , because the hardware switching interface is processed by hardware, this will limit the hardware switching interface from providing refined QoS and other complex services. Therefore, simply using the software WAN interface on the router, or simply using the hardware switching on the Layer 3 The forwarding of multicast packets by interfaces can no longer meet the current needs; a good method is to include software WAN interfaces and hardware switching interfaces in the same routing device, and combine the software WAN interfaces and hardware switching interfaces in the routing device For forwarding multicast packets

However, in the prior art, there is no method for forwarding multicast packets by combining the software WAN interface and the hardware switching interface on the same device

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