Intermediate node, cascade protection system and cascade protection method

An intermediate node and protection system technology, applied in the field of network management, can solve the problems of long switching time and inability to meet customer needs, and achieve the effect of avoiding repeated switching and shortening the time of service switching.

Inactive Publication Date: 2009-12-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, one fault triggered three switching operations, making the switching time longer and unable to meet customer needs

Method used

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  • Intermediate node, cascade protection system and cascade protection method
  • Intermediate node, cascade protection system and cascade protection method
  • Intermediate node, cascade protection system and cascade protection method

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Embodiment Construction

[0028] Embodiments according to the present invention will be described in detail below with reference to the accompanying drawings.

[0029] Such as image 3 As shown, an embodiment of the present invention provides a cascaded protection system including the intermediate node provided by the embodiment of the present invention, the cascaded protection system also includes a first node and a second node, and the intermediate node passes through the first working channel The first node is connected to the first protection channel, and the second node is connected to the second working channel and the second protection channel. The intermediate node includes a receiving unit and a processing unit, wherein:

[0030] The receiving unit outputs after receiving the first signal of the first working channel and the second signal of the first protection channel, and outputs after receiving the first monitoring information corresponding to the first signal and the second monitoring inf...

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Abstract

The embodiment of the invention belongs to the technical field of communication and discloses an intermediate node, a cascade protection system and a cascade protection method. The intermediate node is connected with a first node through a first working channel and a first protection channel, and connected with a second node through a second working channel and a second protection channel. The cascade protection system comprises a receiving unit and a processing unit, wherein the receiving unit is used for receiving and then outputting a first signal of the first working channel and a second signal of the first protection channel, and receiving and then outputting a first monitoring message corresponding to the first signal and a second monitoring message corresponding to the second signal; the processing unit is used for judging whether the first signal and the second signal are normal according to the first monitoring message and the second monitoring message output by the receiving unit; and if the first signal and the second signal are judged to be normal, the first signal is output to the second working channel, and the second signal is output to the second protection channel. The intermediate node, the cascade protection system and the cascade protection method can shorten the switching time of services during a single-point fault.

Description

technical field [0001] The invention relates to the field of network management, in particular to an intermediate node, a cascade protection system and a cascade protection method. Background technique [0002] Due to man-made or natural reasons, communication optical cables are often blocked. The current fiercely competitive communication market requires communication operators to ensure unimpeded customer communication, and communication services have higher and higher requirements for recovery time after business interruption. SNCP (Sub-network Connection Protection, sub-network connection protection) was developed under this background. SNCP is a dedicated protection mechanism, used to protect the protection class of some paths in one or more operator networks, and can support cascaded protection subnets, which is an important protection type in the transport network. [0003] According to the implementation of SF (Signal Failure, signal failure) / SD (Signal Degrade, sig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/26H04L1/22H04J3/08H04J3/16
Inventor 裴玲阎君陈亘张波何达曾宇李振宇涂敏海曾栋汪浩刘晓海
Owner HUAWEI TECH CO LTD
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