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Method and device for obtaining multicast topology message in IP network

A technology of IP network and topology information, which is applied in the field of obtaining multicast topology information in IP networks, which can solve problems such as the inability to actively obtain multicast topology information, and achieve the effect of convenient supervision

Inactive Publication Date: 2009-12-30
ZTE CORP
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  • Claims
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AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to propose a method and device for obtaining multicast topology information in an IP network, so as to solve the problem that the prior art cannot actively obtain multicast topology information according to needs

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  • Method and device for obtaining multicast topology message in IP network
  • Method and device for obtaining multicast topology message in IP network

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Embodiment Construction

[0035] The core idea of ​​the present invention is to search for the previous hop network elements of all network elements on the multicast path, and connect all network elements and their previous hop network elements in series on the multicast path to form a multicast topology.

[0036] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] Such as figure 1 As shown, the method for obtaining multicast topology information in an IP network in the embodiment of the present invention includes the following steps:

[0038] Step 101, select a network element on the multicast path as the current network element, and obtain the incoming interface of the multicast route of the current network element;

[0039] Among them, the multicast path is determined by the multicast source address and the multicast group address. When the multicast source address and the multicast group address are specified, the...

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Abstract

The invention discloses a method for obtaining a multicast topology message in an IP network, which comprises the following steps: selecting a network element of a multicast path as a current network element; obtaining an inlet interface of a multicast router of the current network element and all protocol independent multicast PIM neighboring network elements; searching a network element of which an outlet interface of the next skip of the multicast router is consistent with the inlet interface of the multicast router of the current network element in the PIM neighboring network elements and using the network element as a last-skip network element of the current network element; repeating the steps and searching the last-skip network elements of all the network elements of the multicast path; and connecting all the network elements and the last-skip network elements of the multicast path in series to form a multicast topology. The method can actively obtain the multicast topology message in time and provide convenience for network supervision.

Description

technical field [0001] The invention relates to the field of multicast technology, in particular to a method and device for acquiring multicast topology information in an IP network. Background technique [0002] Multicast is a communication method between unicast and broadcast in an IP network, allowing one or more senders to send a single data packet to multiple receivers. At present, it is widely used in network video conferencing, network audio / video broadcasting, multimedia distance education, distance consultation and other fields. Using multicast technology can well solve the problem of network congestion and improve transmission efficiency. However, with the wide application of multicast technology, the scale and complexity of multicast networks are also constantly developing and improving, so it is increasingly difficult to effectively monitor and maintain the network. [0003] In a multicast network, if a network element fails, its multicast traffic will be borne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/18H04L29/06
Inventor 胡磊
Owner ZTE CORP
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