Method for establishing the multicast share tree and data transfer method and communication network

A multicast data and communication network technology, applied in the field of communication, can solve the problems of multicast service impact, inability to quickly realize switching, etc., and achieve the effect of reducing impact

Active Publication Date: 2007-09-12
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through Anycast RP, if one RP fails, the multicast source and receiver will rejoin the new RP through unicast routing convergence, thereby ensuring the normal forwarding of multicast traffic. It is found that when using this method, the switching cannot be realized quickly, and the multicast service is often affected

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  • Method for establishing the multicast share tree and data transfer method and communication network
  • Method for establishing the multicast share tree and data transfer method and communication network

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Embodiment Construction

[0032] In the embodiment of the present invention, by dividing the network into several planes and establishing redundant backup multicast sharing trees respectively, when the multicast RP node fails, the multicast data can be quickly switched and the impact on the business is reduced .

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the following examples are given and the present invention is further described in detail with reference to the accompanying drawings.

[0034] The present invention provides a method for establishing a multicast shared tree. A data forwarding device receives a group joining request from a downstream data receiving device and establishes a forwarding entry, and these downstream data receiving devices are located downstream of the data forwarding device; wherein, these data forwarding devices At least two.

[0035] The IP addresses of these data forwarding devices serving as convergence poi...

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Abstract

The invention provides a data transmitting method, relating to the field of communication technique, comprising: master and backup data transmitters receive multicast data; the master data transmitter transmits the received data according to transmission list items through a multicast sharing tree where it is; the backup data transmitter does not transmit the received data; wherein, the master and backup data transmitters are located in different multicast sharing trees in the same communication network. By the multicast sharing tree building method, the data transmitting method and the communication network provided by the instance of the invention, when some sharing tree fails, it can implement fast switching of multicast flow and reduce the influence on the service.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method for establishing a multicast shared tree, a data transmission method, and a communication network. Background technique [0002] With the continuous development of the Internet, on the one hand, more and more data, voice and video information are exchanged in the network; Rise. New services, especially point-to-multipoint services (such as Internet TV IPTV), if carried out in the form of unicast, will put forward high requirements on network bandwidth. Multicast technology is an effective IP transmission solution in many aspects It gradually shows its unique advantages, which can save backbone network bandwidth, and new applications using IP multicast technology continue to emerge. [0003] The characteristic of IP multicast technology is that the sender of the multicast information (that is, the multicast source) only sends the information once, and establishes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/54H04L12/18
Inventor 滕新东史文江
Owner HUAWEI TECH CO LTD
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