Group broadcast implementing method based on virtual local area network

Abstract

The invention refers to a multicast realizing method based on virtual local area network. The method is: configures multicast special VLAN in the network; when the third layer network sends message to the second layer network, it sends the waiting multicast message in the special VLAN to the second layer network. To the same physical interface between the third layer network and the second layer network, it only needs to transfer a multicast message; it can meet the demands of sending message to users in different VLAN of the second layer network from the third layer network, it saves the bandwidth resources of the second network and the third network and the physical interface between them. At the same time, the invention is realized based on the multicast protocol run on the current network, so it needn't large adjustment to the current network devices.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a virtual local area network-based multicast realization method. Background technique [0002] With the development of network communication technology, multicast technology has been widely used in network communication, and the realization of multicast technology has greatly improved the forwarding efficiency of packets in the network. For example, in current broadband network communications, it is often necessary to carry out multicast services within the same VLAN (virtual local area network) or between different VLANs. [0003] The networking of the existing broadband network usually includes network equipment such as a layer-3 Ethernet switch, a layer-2 Ethernet switch, integrated access equipment, and a router. According to the functions performed by the network device itself or the combination of network devices in network communication, it may be divided in...

AI Technical Summary

Problems solved by technology

In the network, the Layer 2 network can be configured to allow the establishment of a maximum of 4096 VLANs, so the worst case is that the same multicast message needs to be copied synchronously for 4096 copies. It is easy to imagine how much bandwidth resources such a large number of multicast messages will occupy , so this multicast implementation method will lead to a large waste of bandwidth resources, greatly increase the bandwidth requirements of the physical connection interface between the three-layer network and the two-layer network Capability requirements have also been greatly increased, leading to a substantial increase in network communication costs

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