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Multicast communication method and aggregation switch

A technology for aggregation switches and communication methods, which is applied in the field of multicast communication methods and aggregation switches, and can solve the problems of waste of link bandwidth and inability to realize on-demand replication of multicast traffic, etc.

Active Publication Date: 2014-10-22
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the GM LSP message is sent in a static multicast mode between the AGG and the first multicast router, and the first multicast router is a multicast router directly connected to the AGG, which cannot realize multicast traffic according to Need to copy, there is a waste of link bandwidth between AGG and the first multicast router

Method used

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  • Multicast communication method and aggregation switch
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  • Multicast communication method and aggregation switch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0116] Exemplary, this embodiment of the present invention assumes that the latest updated multicast join information stored by the AGG is the GM LSP message 1 (VLAN1, Group1, Group2) notified by ACC1 and the GM LSP message 2 (VLAN1, Group1, Group2) notified by ACC2. Group3), the multicast join information in the GM LSP message received by the AGG is the GM LSP message 3 (VLAN1, Group2, Group4) notified by ACC3. It should be noted that the GM LSP message received by the AGG The multicast joining information in the text may be one or multiple. The multicast joining information of the GM LSP message 1, the GM LSP message 2, and the GM LSP message 3 includes a VLAN identifier and multicast group information corresponding to the VLAN identifier. First, the latest updated multicast join information stored in the AGG is classified and merged according to the VLAN ID, that is, the multicast join information in the GM LSP message 1 and the GM LSP message 2 is classified according to t...

Embodiment 2

[0119] Exemplary, this embodiment of the present invention assumes that the latest updated multicast join information stored by the AGG is the GM LSP message 4 (VLAN1, Group1, Group2) notified by ACC1 and the GM LSP message 5 (VLAN1, Group1, Group2) notified by ACC2. Group3), the multicast join information in the GM LSP message received by the AGG is the GM LSP message 6 (VLAN1, Group1) notified by the ACC2. It should be noted that. The multicast joining information of the GM LSP message 4, the GM LSP message 5, and the GM LSP message 6 includes a VLAN identifier and multicast group information corresponding to the VLAN identifier. First, the latest updated multicast join information stored in the AGG is classified and merged according to the VLAN ID, that is, the multicast join information in the GM LSP message 4 and the GM LSP message 5 is classified according to the The VLAN identifiers are classified and merged. Since the VLAN identifiers in the GM LSP message 4 and the GM...

Embodiment 3

[0122] Exemplarily, this embodiment of the present invention assumes that the latest updated multicast join information stored by the AGG is the GM LSP message 7 (VLAN1, S1, Group1) notified by ACC1, and the GM LSP message 8 received by the AGG is The multicast join information is the GM LSP message 8 (VLAN1, S2, Group1) notified by ACC2 and the GM LSP message 9 (VLAN1, S1, Group1) notified by ACC3. It should be noted that. The GM LSP message 7, the GM LSP message 8 and the multicast joining information of the GM LSP message 9 include a VLAN identifier and multicast source information and multicast group information corresponding to the VLAN identifier. First, the latest updated multicast join information stored in the AGG is classified and merged according to the VLAN identifier. Since the VLAN identifier in the GM LSP message 7 is VLAN1, the first The multicast joining information is VLAN1 stored in the AGG, and the multicast source information and multicast group informatio...

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Abstract

The embodiments of the present invention provide a multicast communication method and an aggregation switch, relating to the field of communications and being capable of realizing the on-demand duplication of multicast traffic. The method comprises: an aggregating switch (AGG) acquiring a multicast group address link state protocol data unit (GM LSP) message sent by an access switch (ACC); comparing multicast joining information in the GM LSP message with the multicast joining information stored by the AGG to obtain a comparison result, and updating the multicast joining information stored by the AGG in accordance with the comparison result; generating a preset protocol message for varied multicast joining information in the comparison result in accordance with a preset format, wherein the preset protocol message is an Internet group management protocol (IGMP) message or a protocol independent multicast (PIM) message; and sending the preset protocol message to a first multicast router. The multicast communication method and the aggregation switch provided in the embodiments of the present invention are used for multicast communications.

Description

technical field [0001] The present invention relates to the communication field, in particular to a multicast communication method and an aggregation switch. Background technique [0002] A TRILL (Transparent Interconnect of Lots of Links, transparent interconnection of multiple links) network is a network composed of RB (Route Bridge, routing and bridge equipment) devices running the TRILL protocol. The TRILL network can be applied to various scenarios. When the TRILL network is applied in the IPTV (Internet Protocol Television, interactive Internet TV) scenario, the AGG (Aggregation Switch, aggregation switch) and ACC (Access Switch, access switch) Interconnection forms a TRILL network, AGG connects to multicast routers, ACC connects receivers of multicast groups, and the last hop router among multicast routers connects to multicast sources. The receiver of the multicast group sends an IGMP (Internet Group Management Protocol, Internet Group Management Protocol) message t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/761H04L12/917H04L45/16H04L47/76
CPCH04L45/16H04L12/185
Inventor 郝卫国刘毅松
Owner HUAWEI TECH CO LTD