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Method for obtaining path with protective body in intelligent optical network

A technology of intelligent optical network and protection entity, applied in the field of intelligent optical network, can solve the problem of not considering the special requirements of TE links, and achieve the effect of reducing the number of repeated calculations and improving network efficiency

Inactive Publication Date: 2005-03-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the existing path calculation methods, the special requirements of the protection entities in the network for TE link selection are not considered.

Method used

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  • Method for obtaining path with protective body in intelligent optical network
  • Method for obtaining path with protective body in intelligent optical network
  • Method for obtaining path with protective body in intelligent optical network

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Embodiment Construction

[0051] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0052] First some necessary explanations are made to several key terms used in the present invention:

[0053] TE link: A traffic engineering link is formed by bundling data links with the same TE attribute. In an intelligent optical network, the data link can be understood as the minimum bandwidth granularity, which can be VC-4 or VC-12. A TE link can be one optical fiber, multiple optical fibers, or only some time slots in one optical fiber, which is a logical concept.

[0054] Protection entity: refers to a special network topology entity established in the transmission network to realize the protection function for services, such as linear multiplex section, multiplex section protection ring, etc.

[0055] refer to figure 1 , figure 1 A flowchart sh...

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Abstract

This invention discloses a method for acquiring paths with protection entities in the intelligent optical network including the following steps: setting up different TE links for data links of different protection kinds, setting up a same TE link for the data links having the same protection attribute and belonging to the same protect entity, carrying out flooding of the protection entity information to diffuse the protection entity information in the entire route zone and acquiring paths with protection entities in the network according to the information.

Description

technical field [0001] The invention relates to an intelligent optical network, in particular to a method for obtaining a path with a protection entity in an intelligent optical network. Background technique [0002] The current transmission network is mainly based on SDH (Synchronous Digital Hierarchy) / SONET (Synchronous Optical Network) technology. In actual equipment operation, end-to-end service configuration is mainly manually configured according to customer needs. In order to improve the operability of the transmission network, the concept of intelligent optical network has been proposed internationally, and its main function is to support end-to-end automatic configuration of services. In order to provide automatic service configuration capabilities on the transmission network, intelligent optical network equipment must have end-to-end automatic calculation capabilities for optimized service paths. The original transmission network itself has complete protection cap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/20H04J14/02H04L12/00H04L12/24H04Q3/52
CPCH04J14/0284H04J14/0293H04J14/0227
Inventor 王彧
Owner HUAWEI TECH CO LTD
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