Method for recovering multicast routing tree by proactive reconstruction in overlay network environment

A technology of overlay network and recovery method, applied in the field of forward reconstruction and recovery of multicast routing tree, to achieve the effect of improving recovery success rate and reliable self-recovery capability

Inactive Publication Date: 2012-07-04
WUHAN UNIV
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Problems solved by technology

[0011] In view of the above-mentioned technical problems, the purpose of the present invention is to provide a multicast routing tree forward reconstruction recovery method in an overlay network environment. The method introduces a backup validity detection method between the target node and the backup node, which can Solve the dependent backup problem existing in the existing backup node selection model, and improve the recovery success rate of the multicast tree

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  • Method for recovering multicast routing tree by proactive reconstruction in overlay network environment
  • Method for recovering multicast routing tree by proactive reconstruction in overlay network environment
  • Method for recovering multicast routing tree by proactive reconstruction in overlay network environment

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[0045] The multicast routing tree forward reconstruction recovery method under the overlay network environment provided by the present invention will contribute to the service interruption recovery strategy in the multimedia group communication application, and is suitable for solving the disaster recovery in the large-scale network live broadcast service application Recovery problem.

[0046] In the current network communication services, multimedia group communication applications usually distribute multimedia data to each member continuously on a large scale. However, due to various objective factors, member nodes exit the multicast group abnormally, local links fail or As a result, some members cannot continue to receive services normally. For example, when watching a large-scale Olympic live broadcast, when a live access point connected to the audience stops serving, the viewer has to manually reselect another live access point to wait for buffering, and often misses the ...

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Abstract

The invention relates to the technical field of network communication, in particular to a method for recovering a multicast routing tree by proactive reconstruction in an overlay network environment. In the method, a node backup protection mechanism reconstructs and recovers a disaster tolerance mechanism of a failed multicast tree communication route in an overlay network; and aiming at the problem of low recovery efficiency caused by dependence on backup of the proactive overlay multicast routing tree recovery method, a method for detecting backup effectiveness between a target node and a backup node is introduced into a global search backup father node strategy and dependence which exists between the backup father node and the protected target node is limited, so that the success probability of recovering a failed overlay network multicast routing tree is improved. The method can greatly improve recovery success rate while slightly reducing recovery time efficiency and is favorablefor constructing an overlay network multicast tree with reliable self-recovery capability.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a multicast routing tree forward reconstruction restoration method in an overlay network environment. Background technique [0002] Multicast (Multicast, also known as multicast) technology is a controllable point-to-multipoint data routing transmission technology. The data source sends a data copy, and the message can be automatically copied and forwarded as needed during network transmission. to multiple recipients. [0003] An overlay network is a virtual network laid on the application layer for the purpose of providing services. Its core idea is that all functions of communication are implemented by end systems (hosts) instead of core routers. Compared with the IP network, its biggest advantage is that it is easy to deploy without changing the underlying network infrastructure. [0004] In the overlay network environment, the goal of multicast routing is to f...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/24H04L12/18H04L1/16H04L45/16H04L45/28
Inventor 胡瑞敏王朝萍曹雪松谭小琼
Owner WUHAN UNIV
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