Link fault positioning method and system of packet transport network (PTN)

A technology for packet transmission network and link faults, applied in the field of communications, can solve problems such as undetectable blank areas, and achieve the effect of accurate and fast fault location.
CN101986604AActive Publication Date: 2011-03-16深圳市中兴通讯技术服务有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
深圳市中兴通讯技术服务有限责任公司
Publication Date
2011-03-16

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Abstract

The invention discloses a link fault positioning method and system of a packet transport network (PTN). The method comprises the following steps: when a first business end detects the condition that a connectivity fault appears in a link between the first business end and a second business end, automatically triggering fault positioning, and sending a loopback message to the second business end along the a faulty link; when an intermediate node positioned on the faulty link receives the loopback message, forwarding the loopback message to the next node, and sending a loopback response message to the first business end along a path opposite to the path of receiving the loopback message; and positioning the position of the fault in the faulty link by the first business end according to the received loopback response message. In the invention, by automatically triggering the device after the fault is detected, a series of configurations required for manually positioning the fault are avoided, thereby being suitable for quickly positioning the fault; and by sending the loopback message, the connectivity of the link is cheked section by section and the faulty section is investigated from the returned loopback response message, thereby realizing the purpose of accurately positioning the fault.
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Description

technical field

[0001] The present invention relates to the communication field, in particular to a link fault location method and system of a packet transmission network. Background technique

[0002] In the increasingly competitive market environment, operators' networks and services have begun to evolve towards packetization. Based on the trust and operation experience of the existing SDH transport network (Synchronous Digital Hierarchy, Synchronous Digital System), the most important requirement of operators for the packet transport network is: easy maintenance and management, to reduce the need for manual on-site operations, and reduce Requirements for maintenance and management personnel. Therefore, a powerful OAM (Operations Administration and Maintenance, operation, maintenance and management) mechanism is defined in the existing packet transport network.

[0003] In the existing packet transmission network, end-to-end fault detection is defined. Confirm the conne...

Claims

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