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Internet group management protocol listening method and switch

A management protocol and Internet group technology, applied in the Internet group management protocol monitoring method and the field of switches, can solve the problems of no outgoing interface, unable to resend IGMP member report messages, etc., and achieve the effect of fast recovery and forwarding

Inactive Publication Date: 2007-05-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the query cycle of the IGMP querier of the router has not expired, and no IGMP query message has been sent, and the hosts H1 and H2 cannot resend the IGMP membership report message, because the forwarding of multicast data packets is still sent on demand. Before broadcasting data packets, the IGMP membership report message sent by the host cannot pass through the new link, that is, switch S2->switch S3->switch S1, and send it to router R1, then the outgoing interface corresponding to the multicast group in switch S3 There is no outbound interface corresponding to switch S2 in the list

Method used

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  • Internet group management protocol listening method and switch
  • Internet group management protocol listening method and switch
  • Internet group management protocol listening method and switch

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Embodiment Construction

[0028] The following will describe the implementation process of the Internet management protocol monitoring method of the embodiment of the present invention and the switch used in this embodiment according to the two-layer ring type Ethernet network shown in Fig. 1 and Fig. 2 and Fig. 3:

[0029] In Figure 1, the Layer 2 Ethernet ring network runs Spanning Tree Protocol (STP: Spanning Tree Protocol), and IGMP Snooping is enabled on switches S1, S2 and S3. Switch S1 is connected to router R1. The switch S2 is connected to the hosts H1 and H2, and the spanning tree protocol blocks the link between the switch S2 and the switch S3.

[0030] Router R1 periodically sends IGMP query messages to query which multicast groups have members under each switch in the ring network. After the IGMP Snooping modules of switches S1, S2, and S3 receive the IGMP query messages from router R1, they will receive the IGMP query messages. The interface of the message is added to the router (router)...

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Abstract

The invention relates to an internet manage protocol detecting method and relative exchanger, wherein said method comprises that: exchanger sets the route interface of internet manage protocol detecting list; exchanger sets the multicast transfer item and relative output list; exchanger sets the nearby exchanger interface of output list; exchanger deletes the non-nearby exchanger interface that receives the protocol from the output list. When the network protocol of two-layer annular network is changed, the invention can recover the multicast data report transfer quickly.

Description

technical field [0001] The invention relates to communication technology, specifically an Internet group management protocol monitoring method and a switch applied to a ring type Ethernet network. Background technique [0002] In Ethernet, when a switch in a traditional Layer 2 switching network forwards a router's multicast data packet to a host, the switch will flood all its interfaces, that is, it will send the received multicast data packet to each Even if there is no host interested in the multicast data packet under the interface, it will also forward the multicast data packet, which reduces the network efficiency. [0003] In order to optimize the forwarding of the multicast data message of the Ethernet switch, the Internet Group Management Protocol monitoring (IGMP Snooping) running on the existing two-layer Ethernet switch can monitor the information carried by the IGMP message transmitted between the received host and the router. for analysis. When the switch det...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L29/06H04L12/56H04L12/42H04L12/00
CPCH04L63/104H04L12/185H04L45/48H04L45/16H04L45/02H04L41/0806
Inventor 徐小虎
Owner HUAWEI TECH CO LTD