Service path calculating method

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

Inactive Publication Date: 2010-08-04
HUAWEI TECH CO LTD
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  • Abstract
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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.

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Embodiment Construction

[0024] In order to make the objectives, technical solutions and advantages of the present invention more clearly expressed, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] The technical solution of the embodiment of the present invention includes: while constructing the network topology for the network client layer, adding and setting attribute identifiers to the TE links in the network topology, thereby distinguishing actual links and / or virtual links; according to different business requirements , Flexibly select the actual link and / or virtual link as the routing calculation resource of the network client layer; the service head node calculates the service path according to the selected path resource. Therefore, the technical solutions of the embodiments of the present invention can solve the problems of low service establishment success rate or long service recovery time caused by the...

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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 present invention relates to the field of network communication technology, and particularly relates to a method for calculating a service path in the field of transmission network technology. Background technique [0002] With the rapid development of data and the requirements for new types of services, the transformation of the transport network to IP and support for multiple services is also underway. In order for the transmission network to have multi-service support capabilities, provide end-to-end OAM (Operation, Administration and Maintenance, operation management and maintenance) and protection / recovery support capabilities, service providers must provide multiple switching technologies and services with multiple switching granularities Network. Such a network is called a multi-layer network. The ITU-T organization (International Telecommunication Union-Telecommunication Standardization Sector, International Telecommunication Union-Telecommunica...

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Application Information

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