Method and router for positioning the last jump router and multicasting routing track

A router and routing technology, which is applied in the field of network communication, can solve problems such as inconsistency and inability to guarantee query messages, and achieve the effects of improving success rate, reducing the number of trials, and improving accuracy

Inactive Publication Date: 2007-12-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Since the unicast path and the multicast path may be different, there is no guarantee that the query message can be accurately sent to the multicast last-hop router

Method used

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  • Method and router for positioning the last jump router and multicasting routing track
  • Method and router for positioning the last jump router and multicasting routing track
  • Method and router for positioning the last jump router and multicasting routing track

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Embodiment Construction

[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0028] The embodiment of the present invention judges whether the router receiving the query message is in the same network segment as the receiver, and does not forward the multicast data stream, and whether there are active multicast members in the network segment, and if so, modify the query After the message is forwarded to this network segment, the last hop router can be accurately located in the multicast route tracking, which reduces the number of attempts to send the query message during positioning and improves the success rate of locating the last hop router .

[0029] Referring to Figure 2, an embodiment of the present invention provides a method for locating the last hop router in multicast route tracking, which specifically include...

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Abstract

The invention discloses last jump positioning router, multicast route tracking method and the router. The positioning method includes the following steps: receiving inquiry message to judge whether the router is in the network section belongs to received address, and not transmit multi cast data flow; if the network section have movable multi cast member, amending the inquiry message and transmitting to the network second. The router includes receiving module, judging module, and positioning module. The tracking method includes the following steps: positioning the last jump router; transmitting request message to the upper jump; transmitting response message after receiving the first jump router. The invention can exactly locate the last jump router in multi cast router tracking, and increase the success ratio for its positioning and multicast router tracking.

Description

Technical field [0001] The invention relates to the field of network communication, in particular to a method for locating a last-hop router in multicast route tracking, a router and a method for multicast route tracking. Background technique [0002] Mtracert (Multicast Trace Route) is a troubleshooting tool for multicast routing protocols. It can collect traffic statistics of multicast paths, provide abnormal node information, and collect hop-by-hop (S, G) traffic Statistics and other functions. The development of the Mtracert tool follows a mechanism for tracing the network path of multicast data from the multicast source to the receiver with a specific destination: enter the mtrace command on the router (or network management host) that performs multicast route tracking, where the source is specified Address, destination address and multicast group; the router sends IGMP (Internet Group Management Protocol) Tracert Query (tracking query) packets to the last-hop router (Last-H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/24
CPCH04L12/185
Inventor 子康潘军
Owner HUAWEI TECH CO LTD
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