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Dynamic management method for the multicast service members of the automatic switching optical network

A multicast service and automatic switching technology, applied in the field of optical communication, can solve the problem of low cost of the entire multicast tree, and achieve the effect of low cost, less bandwidth resources, and resource utilization

Active Publication Date: 2007-08-01
HUAWEI TECH CO LTD
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Problems solved by technology

In the same multicast tree, this method can ensure that the cost of each member path is the smallest, so that each member can share resources as much as possible, so that the entire multicast tree occupies relatively less total bandwidth resources, and the total path cost is smaller. Solve the problem that the service path calculated by the classic Dijkstra algorithm does not necessarily minimize the cost of the entire multicast tree in the prior art

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  • Dynamic management method for the multicast service members of the automatic switching optical network
  • Dynamic management method for the multicast service members of the automatic switching optical network
  • Dynamic management method for the multicast service members of the automatic switching optical network

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[0045] In order to make the object, technical solution and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0046] The main idea of ​​the present invention is: on the basis of the original establishment of point-to-point services, using the advantages of ASON to automatically discover network resources and topology structures, each time a new member joins the multicast tree, resource pre-addition and Complete the routing calculation; after the calculation is successful, the member needs to be added to the multicast tree, that is, to realize the grafting of the multicast tree; then the resource pre-reduction is performed to remove the bandwidth resources occupied by the multicast tree from the TE link. Using resource pre-addition / pre-subtraction, multicast tree grafting / pruning and other technologies to calculate the optimal path, can provide...

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Abstract

The dynamic management method for ASON multicast business member comprises: based on original P2P business, by the advantage that ASON can automatic find network resource and topology, using resource pre-adding / pre-subtracting and multicast tree grafting / pruning techniques, calculating the optimal patch, and providing well-efficient point-to-multi-point communication connection. This invention is benefit to share bandwidth resource, and reduces total-patch cost.

Description

technical field [0001] The invention relates to optical communication technology, in particular to a method for dynamically managing multicast service members of an Automatic Switch Optical Network (ASON). Background technique [0002] Automatically switched optical network is a new generation of optical transport network that can intelligently and automatically complete the optical network switching connection function. The so-called automatic switching connection refers to: on the basis of automatic discovery of network resources and topology, dynamic intelligent routing algorithm is invoked, and through distributed signaling processing and interaction, it supports automatic creation of end-to-end services and provides feasible and reliable protection. The recovery mechanism realizes automatic protection and recovery when a fault occurs. Its biggest feature is the introduction of the control plane into the traditional transport network. [0003] ASON multicast refers to a...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/24H04L12/18H04Q11/00
Inventor 赵敏冯俊杰
Owner HUAWEI TECH CO LTD
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