An overlay multicast tree reconstruction method, multicast tree node and system

A multicast tree and node technology, applied in the field of multicast communication, can solve the problems of multi-system resources and consumption, achieve the effect of reducing system overhead and avoiding redundant packet traffic
CN101651620BActive Publication Date: 2012-02-08CHINA NUCLEAR POWER TECH RES INST CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA NUCLEAR POWER TECH RES INST CO LTD
Publication Date
2012-02-08

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Abstract

The embodiment of the invention discloses a method for reconstructing an Overlay multicast tree, a multicast tree node and a multicast tree system, wherein the method comprises the following steps: confirming a standby father node in advance for a node in the Overlay multicast tree; and when the node detects that the father node of the node retreats from the Overlay multicast tree, adopting the standby father node as the father node to add the Overlay multicast tree again. By adopting the invention, the system cost can be greatly reduced and the redundant grouping flow is avoided.
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Description

technical field

[0001] The invention relates to the field of multicast communication, in particular to an Overlay multicast tree reconstruction method, a multicast tree node and a system. Background technique

[0002] Multicast communication refers to the communication mechanism that sends data from one source node to multiple destination nodes. It is the basic communication of many new network applications (such as video conferencing, online live broadcast, distance education, network multimedia advertisement and other real-time streaming media systems) Serve. IP multicast is a traditional multicast method. Efficiency is the biggest advantage of IP multicast. However, if IP multicast networks are to be widely deployed on the Internet, special multicast routers are required to support them. Therefore, the researchers proposed overlapping / covering / application layer multicast (Overlay multicast) to replace IP multicast. The basic idea of ​​this technology is that it does not ...

Claims

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