Route recovery method according to failure positioning in automatic exchange optical network

A technology of automatic exchange and recovery method, applied in the field of optical fiber communication, can solve the problems of affecting the service troubleshooting time, affecting the positioning accuracy, and a large amount of information interaction, achieving fast information transmission speed, reducing resource conflicts, and reducing the amount of information interaction. big effect
CN101309525AInactive Publication Date: 2008-11-19ZTE CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZTE CORP
Publication Date
2008-11-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a route recovery method in automatic switched optical network according to fault location. The method comprises: when a fault occurs to connection through detection, the failure point of the connection or two adjacent nodes of a link transmits fault location information to a connected initial node, and the fault location information comprises influenced nodes in the current used route of the connection, and the information of the link; the initial node determines the faulted link and node according to the received fault location information and determines the reusable link resource and the avertable resource on the original route, the faulted link and node can be avoided through the faultless links in the connection so that the connection can be recovered after the route is successfully queried. By applying the route recovery method, when failures occur to a plurality of links or nodes or the link resource is not sufficient, the fault point can be positioned accurately according to the fault information, and the method has the advantages that the amount of information transaction is small, the speed of information transfer is fast, the resource conflict can be reduced as far as possible, the connection recovery efficiency can be improved, the realization is simple, the equipment cost is saved and the flexibility is high.
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Description

technical field

[0001] The invention relates to the field of optical fiber communication, in particular to a route recovery method based on fault location in an automatic switching optical network. Background technique

[0002] Automatically switched optical network (ASON) is an optical transport network that uses the control plane to complete automatic switching and connection control. It is an intelligent optical transport network composed of optical fiber as the physical transmission medium and optical transmission systems such as SDH (Synchronous Digital Hierarchy) and OTN (Optical Transport Network). The architecture of ASON is divided into three planes according to the functions: transport plane, control plane, and management plane.

[0003] The control plane is the core of ASON, which consists of a group of control components that provide routing, signaling, and automatic discovery functions, and is supported by a signaling network. The main functions of the control...

Claims

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