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Method and apparatus for detecting Ethernet multicast loop

An Ethernet and loop technology, applied in the field of network communication, can solve problems such as blocked ports, inability to implement traffic engineering, waste of bandwidth, etc., to achieve the effect of eliminating loop problems, excellent and reliable network performance, and preventing counterfeit attacks

Inactive Publication Date: 2012-04-04
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, the spanning tree needs to block the ports of some redundant links, which artificially wastes bandwidth.
After the spanning tree is applied, there is only one path between any two devices, so traffic engineering cannot be implemented

Method used

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  • Method and apparatus for detecting Ethernet multicast loop
  • Method and apparatus for detecting Ethernet multicast loop
  • Method and apparatus for detecting Ethernet multicast loop

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the present invention is not limited to the following embodiments.

[0021] The embodiment of the present invention provides a method for detecting an Ethernet multicast loop, mainly by sending an Internet Group Management Protocol (IGMP) query message in the Ethernet to be tested, and according to whether the sending end receives the locally sent The IGMP query message is used to determine whether there is a multicast loop in the Ethernet to be tested. The detection method of the embodiment of the present invention can be implemented on one or more switching devices designated in the Ethernet segment to be tested, and the switching device sends an IGMP query message, and then judges whether the switching device receives the IGMP query message sent by the local The IGMP query message sent to determine whether there is a multicast loop in the ...

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Abstract

The invention discloses a method for detecting an ethernet multicast loop, and a device thereof. The method comprises the following steps: a first IGMP inquiry message is sent in an ethernet to be detected; the received IGMP inquiry message is monitored; whether the IGMP inquiry message belongs to the first IGMP inquiry message or not is judged, and if so, a multicast loop exists in the ethernet.The device comprises a sending unit used for sending the first IGMP inquiry message in the ethernet to be detected, a monitoring unit used for monitoring the received IGMP inquiry message and a judging unit used for judging whether the IGMP inquiry message belongs to the first IGMP inquiry message or not and determining that the multicast loop exists in the ethernet when the IGMP inquiry message belongs to the first IGMP inquiry message. Through the implementation of the invention, the circumstance that the multicast loop appears in the network can be automatically detected, therefore, the network administrator can be reminded in time to eliminate network hidden dangers, the broadcasting storm can be avoided, and the excellent network performance can be provided.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method and device for detecting an Ethernet multicast loop. Background technique [0002] With the rapid development of network communication technology, Ethernet-based multicast services are also increasingly widespread. figure 1 Realize the scene graph for Ethernet multicast service. like figure 1 As shown, host H and switches S1, S2, S3, and S4 are in an Ethernet segment. When host H wants to join a multicast group G1, it will send a report (Report) message, and switches S1 and S3 will receive it. After receiving the report message, switch S1 forwards the report message to switch S2, then forwards it to S4, S4 forwards it to S3, and S3 forwards it to multicast router R, finally forming the arrow in the figure The forwarding path is shown, and a corresponding multicast forwarding table is established on the multicast router R. When the multicast data flow re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L12/56H04L12/26
Inventor 周鹏
Owner HUAWEI TECH CO LTD