Aggregation method for two layer multicast virtual local area network and its convergent exchanger

Abstract

The method comprises: setting a message processing rule used for making multi VLAN multicast messages at client side correspond to one VLAN multicast message at network side; the VLAN at client side receives the multicast message, and according to said rule processes the multicast message, and then sends the multicast message to upstream switch equipment through VLAN at network side; the VLAN at network side receives the multicast message, and according to said rule processes the multicast message, and then send it to the client side. By monitoring IGMP message, the aggregation switch builds and maintains multicast relay table, and according to the multicast relay table the aggregation switch relays the multicast message sent down by upstream switch equipment. The layer 2 local-network aggregation switch comprises a Ether processing module and a drive processing module, and can also comprises a multicast protocol processing module.

Description

technical field [0001] The invention relates to the technical field of computer network communication, and more specifically relates to a two-layer multicast virtual local area network aggregation method and an aggregation switch thereof. Background technique [0002] With the development of network technology, the realization of multicast technology has greatly improved the forwarding efficiency of packets in the network, so it has been widely used in network communication. At the same time, after several years of construction, the broadband IP network has begun to take shape, with high-bandwidth network infrastructure and a large number of users. IP multicast technology realizes efficient data transmission from point to multipoint in IP network. Because multicast can effectively save network bandwidth and reduce network load, it is widely used in many aspects such as real-time data transmission, multimedia conference, data copy, game and simulation. The multicast feature...

AI Technical Summary

Problems solved by technology

[0009] In the networking of the prior art, all VLANs accessed by users need to be transparently transmitted to the gateway L3 switching device for termination. When the number of VLANs accessed by users is large, a large number of VLAN terminations need to be performed on the L3 switching device. Each VLAN needs to consume the routing interface resources of an L3 switching device, which puts a lot of pressure on the processing of the L3 switching device. At the same time, when multiple users join the same multicast group, there will be multiple channels of the same Multicast flow downlink, wasting precious bandwidth resources

In addition, user VLAN interfaces and IP addresses need to be configured on L3 devices, which increases configuration complexity

Images