Communication method based on synchronous digital hierarchy (SDH) and SDH device

A technology for synchronizing digital systems and SDH equipment, applied in the field of communication, can solve the problem of high production cost of RPR chips, achieve the effects of low equipment cost, fast protection switching, and broad application prospects

Active Publication Date: 2017-03-01
HUAWEI TECH CO LTD
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  • Abstract
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Problems solved by technology

However, the RPR technology must be realized by using a professional RPR chip, and the production cost of the RPR chip is relatively high

Method used

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  • Communication method based on synchronous digital hierarchy (SDH) and SDH device
  • Communication method based on synchronous digital hierarchy (SDH) and SDH device
  • Communication method based on synchronous digital hierarchy (SDH) and SDH device

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Embodiment Construction

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Synchronous Digital Hierarchy (Synchronous Digital Hierarchy, referred to as "SDH") is a digital communication system in optical fiber communication systems. It is a standard technology for synchronous data transmission in optical media. SDH can also be regarded as a multiplexing It is a comprehensive information transmission network that integrates the functions of line transmission and switching, and is operated by a unified network ...

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Abstract

The embodiment of the invention provides a communication method based on SDH and an SDH device. The method includes: receiving a current data packet through a first synchronous transport module in at least two synchronous transport modules of the SDH device, wherein the current data packet is used for being sent to an access data single board with a fault in the SDH device; determining a second synchronous transport module used for forwarding the data packet received by the first synchronous transport module on the Ethernet ring network in the at least two synchronous transport modules; directly transmitting the current data packet to the second synchronous transport module through a cross board of the SDH device without passing the access data single board with the fault; and sending the current data packet to the SDH device at a next SDH device in the Ethernet ring network through the second synchronous transport module. According to the communication method based on SDH and the SDH device, on the premise of low equipment cost, rapid protection switching of the Ethernet ring network can be realized, and the application prospect is wide.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication, and more particularly, to a communication method and SDH device based on the Synchronous Digital Hierarchy SDH. Background technique [0002] As the industrial environment has higher and higher requirements for the reliability and real-time performance of the industrial control network, the industrial Ethernet widely adopts the ring network to improve the network reliability. In Ethernet ring network protection, fast protection switching is often required, and the protection switching time needs to be within 50ms. Currently, the industry mainly adopts the Resilient Packet Ring (RPR) technology to carry and protect Ethernet ring network services. The RPR technology can realize fast ring network protection with less than 50ms service interruption. However, the RPR technology must be realized by using a professional RPR chip, and the production cost of the RPR chip is relatively h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/08H04L12/437
Inventor 蔡长波袁道春
Owner HUAWEI TECH CO LTD
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