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Method for implementing bidirectional automatic switch of sub-network connection protection

A technology of automatic switching and subnetting, which is applied in electrical components, time-division multiplexing systems, and multiplexing communications, etc., and can solve problems such as complex implementation.

Inactive Publication Date: 2009-01-28
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the relevant protocols are not yet fully mature, the process of bidirectional automatic switching involves protocol interaction processing, so the implementation is more complicated

Method used

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  • Method for implementing bidirectional automatic switch of sub-network connection protection
  • Method for implementing bidirectional automatic switch of sub-network connection protection

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Experimental program
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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] refer to figure 1 , a method for realizing SNCP bidirectional automatic switching, comprising the following steps, wherein the first end node and the second end node are two end nodes realizing SNCP bidirectional automatic switching:

[0028] S101: The first end node regularly detects a fault, sets the RDI bit of the channel overhead G1 byte corresponding to the fault in the feedback signal to the preset switching flag value --1, and sends the reply to the downstream second end node send signal; among them,

[0029] When a channel fault is detected, the channel corresponding to the fault is the channel in which the fault occurred;

[0030] When the detection finds that the regeneration section or the multiplexing section is faulty, the channels corresponding to the fault are all channels;

[0031] S102: The first end node performs the switching action of the ...

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PUM

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Abstract

The invention discloses a method for realizing the subnet connection protection bi-directional automatic rotation. The method comprises the following steps that: a. a first terminal node periodically detect and find failure, and in the returning signal, the RDI bit in the channel spending G1 byte corresponding to the failure is set to be the preset rotation value of statistical indicant, and the returning signal is sent to a second terminal node downstream; b. the first terminal executes the rotation action of channels; c. after the second terminal node receives the returning signal, the second terminal node detects the value of the RDI bit in the channel spending G1 byte and executes the bridging connection action of the channel, the value of the RDI bit of which is the rotation value of statistical indicant. In the technical proposal of the invention, the channel spending is only utilized to realize the subnet connection protection bi-directional automatic rotation.

Description

technical field [0001] The present invention relates to SNCP (Subnetwork Connection Protection, subnetwork connection protection) of SDH (Synchronous Digital Hierarchy, synchronous digital system), in particular to a method for realizing SNCP bidirectional automatic switching. Background technique [0002] SNCP is a protection mechanism of SDH, which is a dedicated end-to-end protection scheme, including one-way automatic switching and two-way automatic switching. The SNCP one-way automatic switching does not require the support of the agreement between network elements, and the switching speed is fast. It is widely used in SDH networks and is a very important service protection method. [0003] However, with the diversity of user requirements and the popularization of ASON (Automatically Switched Optical Network, Automatically Switched Optical Network) applications, application scenarios that require bidirectional automatic switching of SNCP are gradually increasing. At pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/08
Inventor 干建高学刚
Owner ZTE CORP
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