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Service path calculating method

A service path and calculation method technology, applied in the field of network communication, can solve problems such as long service recovery time, waste of path resources, and inability to select TE links

Inactive Publication Date: 2008-04-16
HUAWEI TECH CO LTD
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Problems solved by technology

Although this method will not encounter problems such as low service establishment success rate or long service recovery time due to the existence of virtual links; The business of the client layer will waste the path resources of the network service layer. At the same time, this method cannot flexibly select TE links as path computing resources according to the business requirements of the network client layer.

Method used

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Embodiment Construction

[0032] 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.

[0033] The core idea of ​​the technical solution of the present invention is: while constructing the network topology for the network client layer, add attribute identifiers to the TE links in the network topology, thereby distinguishing actual links and / or virtual links; , flexibly select actual links and / or virtual links as routing computing resources at the network client layer; the service head node calculates the service path according to the selected path resources. Therefore, using the method of the present invention can solve the problems of low service establishment success rate or long service recovery time caused by the existence of virtual links, and realize rational use of path resources at the same time.

[0034] Such as...

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Abstract

The invention relates to the field of network communication technology, in particular to a calculation method for a service path. The method comprises the steps as follows: a traffic engineering link information which carries a link attribute mark is issued at a network client layer; according to a service requirement and the traffic engineering link information, the traffic engineering link which is corresponded to the ink attribute mark is selected to be the path calculation resource; the service path is worked out by a service first node according to the selected path resource. The method of the invention can solve the problems of low success fate of service establishment caused by the existence of a virtual link and long service recovery time. In addition, the fully use of the path resources is realized.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a calculation method of a service path in the technical field of transmission network. Background technique [0002] With the rapid development of data and the requirements for new types of services, the IP-based transport network and the transformation to support multiple services are also in progress. In order to enable the transport network to have multi-service support capabilities, provide end-to-end OAM (Operation, Administration and Maintenance, operation management and maintenance) and protection / restoration support capabilities, service providers must provide services with multiple switching technologies and multiple switching granularities Such a network is called a multi-layer network. The ITU-T organization (International Telecommunication Union-Telecommunication Standardization Sector, International Telecommunication Union-Telecommunications Standardiza...

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Application Information

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IPC IPC(8): H04L12/56H04L12/24H04L45/125H04L12/54H04L47/724
CPCH04L45/125H04L47/724H04L45/64H04L45/00H04L12/5695H04L47/70
Inventor 况振东徐慧颖
Owner HUAWEI TECH CO LTD
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