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Method of implementing protection switching in light network

A technology of protection switching and implementation method, applied in the field of optical network communication

Active Publication Date: 2010-12-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0009] Regardless of the BDI in OTN and MPLS, or the RDI in SDH, the function is the same. After the remote end finds a defect, it informs the local end of a signal. Signals are not effectively used in protection switching, especially in the case of protection switching supported by protocols, which makes the real-time performance of protection switching in the network poor

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  • Method of implementing protection switching in light network
  • Method of implementing protection switching in light network
  • Method of implementing protection switching in light network

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Embodiment Construction

[0043] The core of the present invention is to use RDI or BDI as the condition for triggering switching in the optical network, and cleverly use the RDI or BDI transferred from the opposite end to improve the efficiency of protection switching, thereby effectively shortening the time of protection switching in the network.

[0044] The method described in the present invention will be described below by taking the use of RDI as a condition for triggering switching in an optical network as an example. At the same time, in order to have a clearer understanding of the beneficial effects of the present invention compared with the prior art, the following will describe the process of not using RDI to trigger the protection switching and the process of using RDI to trigger the protection switching, which can be clearly seen by comparing the two processes. The beneficial effects of the present invention.

[0045] First, the process of triggering protection switching without using RDI is d...

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Abstract

This invention relates to a realizing method for protecting inversion in an optical network including: when a network node in the optical network receives the flaw instruction information of RDI / BDI, said node carries out the protection inversion operation based on the instruction, therefore, the RDI / BDI is taken as the trigger condition for protecting the inversion to increase its rate and realize double-end inversion without using the protocol.

Description

technical field [0001] The invention relates to the technical field of optical network communication, in particular to a method for realizing protection switching in an optical network. Background technique [0002] In an optical network, protection switching and service recovery are two kinds of service protection means. Among them, the protection switching plays an important role in the optical network, especially in the optical transmission system, because of its advantages of reliability and short switching time. Among the protection switching of all optical network systems, the multiplexing section switching of SDH equipment is the most mature protection switching. [0003] G.841 is an international standard for multiplex section switching formulated by ITUT. In this standard, the coding and switching rules of k bytes of multiplex section switching are described in detail. This standard is the basis for realizing multiplex section switching. The conditions that usuall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/14H04B1/74H04B10/12H04B10/032
Inventor 王光军
Owner HUAWEI TECH CO LTD
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