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A method and device for processing igmp messages

A technology of message and message information, applied in the field of network communication, can solve the problem of long interruption time of multicast services, and achieve the effect of avoiding broadcast and shortening interruption time.

Inactive Publication Date: 2012-02-01
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the time interval for the IGMP querier to send the IGMP query message is long, it may take nearly one minute from the failure of link 1 to the recovery of the multicast stream through link 2 and link 3, which obviously gives Long interruption time caused by multicast service

Method used

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  • A method and device for processing igmp messages
  • A method and device for processing igmp messages
  • A method and device for processing igmp messages

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Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] The method provided by the present invention mainly includes: enabling the port in the discarding state to process IGMP messages in advance; when the switch receives or sends an IGMP message through the port in the discarding state, it determines whether An entry containing the IGMP message information already exists, if not, create an entry containing the IGMP message information in the IGMP message table set for the port, forward the IGMP message, and add If it is an IGMPreport message, use the IGMP report message to create a forwarding entry; if it is, then discard the IGMP message.

[0019] In the prior art, ports in the discarding state can only process STP protocol messages and Layer 2 point-to-point protocol messages. In the present ...

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Abstract

The invention provides a method and a device for processing the internet group management protocol (IGMP) messages, and enables a port in a blocked state to treat IGMP messages in advance, wherein, the method comprises the following steps: when receiving or sending an IGMP message through the port in a blocked state, a switch determinates whether a list item including the IGMP message information exists in an IGMP message list arranged corresponding to the port or not; if no, the list item including the IGMP message information is established in the IGMP message list arranged corresponding to the port, the IGMP message is forwarded; and when the IGMP message is an IGMP adding message, the IGMP message is utilized to establish and forward the list item; if yes, the IGMP message is discarded. The invention can shorten the time of interrupting multicast stream after switching a link circuit, and avoid the broadcast caused by the ring circuit of the IGMP messages.

Description

technical field [0001] The invention relates to network communication technology, in particular to a method and device for processing Internet Group Management Protocol (IGMP, Internet Group Management Protocol) messages. Background technique [0002] In the existing Layer 2 multicast environment, a ring network is usually used to provide redundant links, and the Spanning Tree Protocol (STP, Spanning Tree Protocol) is used to block ports on a certain link so that the multicast stream It can be forwarded according to the ports actually needed, thus avoiding loops. In addition, the IGMP technology will be used to manage the multicast members to realize the control of the multicast members joining or leaving the multicast group. [0003] figure 1 It is a networking structure in a Layer 2 multicast environment, such as figure 1 As shown, the layer-2 multicast environment is a ring network composed of layer-3 switch 1, layer-3 switch 2 and layer-2 switch, and STP and IGMP snoo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L12/56H04L12/70
Inventor 沈岭
Owner NEW H3C TECH CO LTD