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Data communication switchover method and system

A data communication and switching system technology, applied in the field of communication, can solve problems such as service interruption and failure of correct detection by one end device, and achieve the effect of improving reliability

Inactive Publication Date: 2007-02-14
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But usually there is such a situation, that is, when one of the transmitting and receiving optical fibers of the SDH equipment and the POS interface of the router fails, the equipment at one end cannot be detected correctly, and switching does not occur, resulting in service interruption.

Method used

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  • Data communication switchover method and system
  • Data communication switchover method and system
  • Data communication switchover method and system

Examples

Experimental program
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Embodiment Construction

[0022] The specific embodiment of the present invention is described in further detail below in conjunction with accompanying drawing:

[0023] Such as figure 2 As shown, it is a schematic diagram of the SDH two-way link applied in the present invention, wherein, router A is connected with SDH equipment through transmitting optical fiber T1 and receiving optical fiber R1 to form the main link for signal transmission; router B is connected through transmitting optical fiber T2 and receiving optical fiber R1 Optical fiber R2 is connected with SDH equipment to form a backup link for signal transmission.

[0024] Please combine image 3 As shown, when the optical fiber T1 sent by router A to the SDH equipment fails, the SDH equipment as the receiving end cannot receive the optical signal sent by router A, and the SDH equipment will initiate a switch from the POS3 interface to the POS4 interface, and at the same time, send the multiplex section The remote failure indicates MS_RD...

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Abstract

This invention relates to method for switching data communication including: when the fiber sent to a primary router by a synchronous digital transmission system SDH device is faulty, the primary router sends alarm information to the opposite SDH device to inform it to switch it, or the fiber sent to the SDH device by the primary router is faulty, the SDH sends alarm information to the primary one, which cuts the packet transmission POS interface based on SDH and the current primary router is switched to a backup one.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a data communication switching method and system. Background technique [0002] With the development of network communication technology, wired network users usually require reliable and uninterrupted services, and optical network is an important network component, and its protection and restoration capabilities have a significant impact on the reliability of the entire network. [0003] Currently, in special industries such as securities and insurance, operators usually provide 1+1 protection networks. Such as figure 1 As shown, the networking mode of the SDH-based packet transmission (POS, Packet Over SONET / SDH) line with 2M network points converged to the headquarters 155M, and the transmission equipment adopts SDH (Synchronous Digital Hierarchy, synchronous digital transmission system) for dual-channel optical fiber protection In order to ensure redundancy,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/12H04B1/74H04L1/22H04L29/06H04B10/08H04B10/07H04L12/24
Inventor 徐福红
Owner HUAWEI TECH CO LTD
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