Implementation method, system and device for monitoring the Internet group management protocol

Abstract

The present invention provides a method for listening to the Internet group management protocol. In the method, the user-side access device maintains the corresponding relationship of multicast packet distribution, and further includes: A. The user-side access device receives and carries the multicast group identifier and the public network label The multicast message of (P-VLAN Tag); B, user side access equipment, according to P-VLAN Tag and the multicast group identification in the multicast message, search corresponding user network label (C-VLAN Tag) in described corresponding relationship ) identifies the user equipment; C, the user-side access device replaces the P-VLANTag in the multicast message with the found C-VLAN Tag, and sends it to the user equipment identified by the C-VLAN Tag. The invention also provides an Internet group management protocol interception system, which includes network side equipment, user side access equipment and user equipment. The invention also provides a device for intercepting the Internet group management protocol.

Description

technical field [0001] The invention relates to message transmission technology in the Internet, in particular to a method, system and device for realizing IGMP Snooping. Background technique [0002] With the continuous development of the Internet, more and more data are exchanged in the network, and new services such as e-commerce and Internet TV (IPTV) are gradually emerging. These changes have put forward new requirements for network bandwidth. The traditional point-to-point transmission of messages The method can no longer meet the new requirements. In this case, a multicast technology that can realize point-to-multipoint efficient transmission has emerged, which saves a lot of network bandwidth, reduces network load, and provides some new value-added services very conveniently. [0003] However, when using multicast technology, after the multicast router sends the multicast packet to the user-side access device, the user-side access device needs to copy the packet to ...

AI Technical Summary

Problems solved by technology

[0006] Although the method of applying multicast technology and IGMP Snooping technology in the QinQ network realizes the on-demand distribution of multicast packets in the QinQ network, the on-demand distribution is based on C-VLAN. When two switches are located in the same C-VLAN -VLAN and only one switch needs multicast packets, another switch that does not need multicast packets will also receive multicast packets in this way, resulting in waste of network bandwidth on the user side Files need to be copied multiple times in the QinQ network, and the network load increases. When the number of C-VLANs is large, traffic congestion and packet loss are prone to occur.

Images