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Method for realizing high-reliability distributed redundant looped network

A technology of redundant ring network and implementation method, which is applied in the direction of ring network, data exchange through path configuration, digital transmission system, etc., can solve the problems of node failure judgment analysis, recording, positioning, etc., and achieve the goal of improving redundancy time Effect

Active Publication Date: 2011-05-11
KYLAND TECH CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] The above methods only realize the network redundancy protection method of link interruption, and cannot accurately determine, analyze, record, and locate node failures in the network.

Method used

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  • Method for realizing high-reliability distributed redundant looped network
  • Method for realizing high-reliability distributed redundant looped network
  • Method for realizing high-reliability distributed redundant looped network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] 1.1 Network initialization process

[0034] 1.1.1 Network free competition root node

[0035] In the process of network initialization, a competition mechanism is adopted; under the competition condition, the ports of all devices are in the BLOCKED state.

[0036] Both ring ports of all nodes on the ring are in the BLOCKED state.

[0037] After each device starts up, it sends detection PDU messages to adjacent devices.

[0038] All network element nodes wait for the longest three preset macro periods to detect whether there are periodic messages on the network, and enter the competition master state if no periodic messages are received.

[0039] Each device sends detection PDU messages to adjacent nodes to elect a master node; the node with the smallest MAC address is the first master.

[0040] When the first master node confirms that it is the master station, its primary ring port is transferred from the BLOCKED state to the FORWARDING state, and the secondary ring ...

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Abstract

Disclosed is an implementation method of the high-reliability Distributed Redundancy Protocol. The implementation method is characterized in that when a precision synchronization clock is introduced; no main station exists among the devices which construct the loop network; each device maintains the state of the loop network in turn according to the time domain of the beforehand configuration of each device. The implementation method solves the network high-reliability problems under various situations, including that a switch in a network is completely damaged; the switch function of some switch operates well and a CPU chip or the program fails; the link connection is abnormal. The implementation method also realizes the functions of accurate location of the network fault, recording the occurrence process and the accurate time of the fault and rapid recovery. Any switching time is avoided during the recovery of the network fault so that the stability of the industrial network is improved.

Description

technical field [0001] The invention relates to an industrial communication transmission method, and more specifically relates to a distributed high-reliability industrial network communication method. Background technique [0002] At present, safety accidents in my country's chemical industry, coal, oil and gas and other industrial fields occur frequently, which not only bring huge economic losses to enterprises, but also pose a great threat to people, equipment, and the environment. important factor in social construction. [0003] At the same time, with the rapid development of my country's economy and the continuous improvement of industrial manufacturing level, the machinery and equipment required for industrial production are becoming more and more advanced, and the degree of automation of the production process has been greatly improved, which makes the production process and equipment more complicated. Therefore, the equipment Safety has also become extremely importan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/22H04L12/42H04L29/06
Inventor 张洪雁张国刚陈凡民马化一薛百华
Owner KYLAND TECH CO LTD
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