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Internet group management protocol listening method and switch

An Internet group and management protocol technology, applied in the field of communication, can solve problems such as no outbound interface, unable to resend IGMP member report messages, etc., and achieve the effect of fast recovery and forwarding

Inactive Publication Date: 2008-11-12
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 be based on figure 1 , figure 2 The Layer 2 ring Ethernet network shown and image 3 Describes the implementation process of the Internet Management Protocol monitoring method in the embodiment of the present invention and the switch used in this embodiment:

[0029] figure 1 In the second layer Ethernet ring network running Spanning Tree Protocol (STP: Spanning Tree Protocol), switches S1, S2 and S3 start IGMP Snooping. 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 in each switch in the ring network have members. The IGMP Snooping modules of switches S1, S2, and S3 will receive the IGMP query message from router R1. The interface of the message is added to the router interface list of the respective local IGMP Snooping table, and the s...

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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, in particular to an Internet group management protocol monitoring method and a switch applied to a ring-type Ethernet network. Background technique [0002] In Ethernet, when the switch of the traditional Layer 2 switching network forwards the multicast data message of the router to the host, the switch will flood all its interfaces, that is, it will send the received multicast data message to every switch of the switch. This interface forwards, even if there is no host interested in the multicast data packet under this interface, it also forwards it, which reduces network efficiency. [0003] In order to optimize the forwarding of multicast data packets of Ethernet switches, the Internet Group Management Protocol Snooping (IGMP Snooping) running on existing Layer 2 Ethernet switches can monitor the information carried in the IGMP messages transmitted between the received host and the router Perform analysi...

Claims

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Application Information

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