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Method for protecting data service in metropolitan area transmission network

A technology for transmission network and data protection, applied in the field of metro transmission network, it can solve problems such as protection of nodes with poor reliability and inability to protect services, and achieve the effect of improving reliability and making full use of bandwidth resources.

Inactive Publication Date: 2007-11-28
HUAWEI TECH CO LTD
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Problems solved by technology

[0011] The present invention provides a method for protecting data services in a metropolitan transmission network to solve the problem of completely relying on data equipment to protect data devices connected to nodes in the metropolitan transmission network and their link failures in the prior art. Due to failure detection, there are problems of poor protection reliability and failure to protect services when the destination node of the metropolitan area transmission network fails as a whole

Method used

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  • Method for protecting data service in metropolitan area transmission network
  • Method for protecting data service in metropolitan area transmission network
  • Method for protecting data service in metropolitan area transmission network

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Embodiment Construction

[0031] Without using the traditional Synchronous Digital Hierarchy (SDH) protection method, the present invention mainly uses the metro transmission equipment to detect the node and link failure of the metro transmission network and the link failure between the metro transmission equipment and the data equipment. for protection.

[0032] In the present invention, when the transmission links and nodes in the metropolitan area transmission network are working normally, the business is transmitted through the working channel created between the source node and the working destination node; when the working channel fails, the business is transmitted through the The protection channel transmission established between the node and the protection purpose node, the protection purpose node is a node in the metropolitan area transmission network except the working purpose node. The working destination node and the protection destination node are connected to the same data device, or con...

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Abstract

Present invention discloses a method for protecting data service in metropolitan area network (MAN), said metropolitan area network (MAN) has created channel between source node and destination node. Said method contains determining protected destination node outside the work node, setting protective channel between source node and destination node, said source node detecting work channel and protection channel transmission link and node failure state and reporting source node in failure, said source node switching data service in work channel to protective channel in detecting node failure and receiving failure report.

Description

technical field [0001] The invention relates to a metropolitan area transmission network, in particular to a method for protecting data services in the metropolitan area transmission network. Background technique [0002] Metro transmission equipment is developed from traditional Synchronous Digital Hierarchy (SDH) equipment, and has now incorporated data access technologies such as Ethernet and Asynchronous Switching Mode (ATM), with Multi-Service Transport Platform (MSTP) equipment as a typical representative. In metro transmission equipment, SDH services can be protected at the network level through multiplex section protection (MSP), subnet connection protection (SNCP), path protection (PP) and other protection methods. Ethernet data business does not have its own protection method at present, and can only rely on SDH protection. [0003] With the increasing application status of data services on the metro transmission network, some important data services also have hig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/28
CPCH04J3/14H04L12/2852H04L12/437H04L41/0677H04L41/0654
Inventor 王军涛金志国
Owner HUAWEI TECH CO LTD
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