Method for detecting multi-service transmission platform device service loopback

A transmission platform and multi-service technology, applied in the field of communication transmission, can solve problems such as the inability to discover data loopbacks, and achieve the effect of reducing the discovery time

CN1734991AInactive Publication Date: 2006-02-15BEIJING ELECTRIC POWER ECONOMIC RES INST +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2006-02-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

This invention discloses a method to detect loop-return business in multi business transmission platform device,, which comprises following steps: 1. generating unique track mark accorded with ITUT for every channel; 2. writing the mark on overhead position and sending; 3. abstracting the mark when receiving data; 4. comparing the received mark and send track mark to decide whether there is ring return. The method can find out the happen and disappear quickly, soles the problem that data exchange palsy for ring-return in SDH line, and makes MSTP device more stale.
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Description

technical field

[0001] The invention relates to a multi-service transmission platform technology in the field of communication transmission. Background technique

[0002] The multi-service transport platform MSTP (Multi-Service Transport Platform), which is called the second-generation transmission equipment, has been accepted by many telecom operators. With its low cost, high reliability and smooth upgrade capability, it has become an important device for constructing a metropolitan area network. His architecture is generally divided into three parts: data to SDH mapping, cascading of SDH containers and cross-multiplexing of SDH containers.

[0003] Since MSTP is the fusion of data and SDH technologies, it will inevitably bring some problems that are not found in ordinary data networks. In an ordinary data network, a data packet sent by a port will not be received from the same port again, which is determined by the principle of data network switching; but in MSTP equipme...

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Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0018] figure 1 It has already been explained in the background art.

[0019] figure 2 is a flowchart of the method proposed by the present invention. Such as figure 2 As shown, the method for detecting the service loopback of the multi-service transmission platform equipment proposed by the present invention includes the following steps: 1. For each channel, generate a unique tracking flag that complies with the provisions of the ITUT for the tracking flag byte. If the generated flag is not unique, false positives will occur when receiving comparisons. The generated trace flag information must comply with the ITUT regulations on the trace flag byte, for example, only the highest bit of the CRC check byte can be 1. A relatively reliable tracking mark generation method is: CRC check code + network element ID + subrack number + slot numbe...