Method for implementing shared risk link circuit group separation crossing field path

Abstract

The implementing case of the invention relates to the technical field of network communication, which particularly discloses a method for separating a sharing risk link circuit group of an actual cross-domain path. The method comprises leading a traffic source node to launch cross-domain path calculating request which is separated by N sharing risk link circuit groups from the traffic source node to a traffic destination node, receiving the path calculating request by a path calculating server of each area where the cross-domain path needs to pass, calculating path sections which are separated by the cross-domain risk link groups of local area according to the information of association mapping table of the local sharing risk link circuit group, utilizing the path calculating server where traffic destination node is located to split the path sections which are calculated by the path calculating server of each area to be a complete N cross-domain paths, achieving the separation of the sharing risk link circuit group among N cross-domain paths, and N is an integer which is more than one. The SRLG separation of cross-domain paths is achieved through utilizing the above technical proposal, and the problem that the same physical topological risks existed among several cross-domain paths can be effectively avoided.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method for realizing the separation of shared risk link groups of cross-domain paths in the technical field of transmission network. Background technique [0002] Traditional optical networks, such as synchronous digital hierarchy (Synchronous Digital Hierarchy, SDH), synchronous optical network (Synchronous Optical Network, SONET) and optical transport network (Optical Transport Network, OTN), mainly adopt the form of self-healing ring networking, bandwidth utilization not tall. Moreover, traditional optical networks (SDH, SONET) are statically configured through network management, and mainly adopt ring networking, which is complex, time-consuming, and has low bandwidth utilization. With the demand for multi-service, high bandwidth, high survivability, and fast connection provision, the existing network architecture and networking methods will be impacted, and ...

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Problems solved by technology

[0006] According to the above prior art, the inventor found in the process of the invention that based on the problem of cross-domain end-to-end path separation, the existing technical solutions cannot solve the following situation: in a multi-domain network, although different SRLG value, but because the allocation of SRLG is a management policy of a management domain, SRLG is not globally unique, so there may be different actual physical topologies with the same SRLG attribute, which will result in the calculated "separation" path and Separation of shared risk link groups for cross-domain paths cannot be achieved

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