Method for realizing redundant ring and network recovery in Ethernet

A technology of network recovery and Ethernet, applied in the field of Ethernet communication, can solve the problems that cannot satisfy the real-time performance of industrial control network communication, and achieve high availability and simple and effective methods

Inactive Publication Date: 2010-06-16
NO 3 AUTOMATION INSTR & METERS FACTORY SHANGHAI AUTOMATION INSTR & METERS CO LTD
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Problems solved by technology

[0002] Due to its openness, stability, low cost, high transmission rate, easy networking and many other advantages, Ethernet technology gradually enters the field of industrial control and becomes an integral part of the automation communication network; and it is widely used in redundant netwo

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  • Method for realizing redundant ring and network recovery in Ethernet
  • Method for realizing redundant ring and network recovery in Ethernet
  • Method for realizing redundant ring and network recovery in Ethernet

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Embodiment Construction

[0016] A method for Ethernet to realize ring network redundancy and network restoration, comprising an Ethernet ring network composed of a plurality of switches, the switches are physically connected to form a ring, and logically be a chain structure, and it is characterized in that: the switches have And only one is set as the master station, the master station is responsible for controlling the network logic structure, and the others are set as slave stations. The redundant link backup of the ring network is realized through the state switching of the ring ports of each switch. The method of realizing network redundancy and recovery is as follows:

[0017] ①The master station and each slave station have two ring ports, and each ring port can be set to the forwarding state or the blocking state. In the forwarding state, all Ethernet packets are forwarded; in the blocking state, ordinary service packets are not forwarded, only Forward preset link detection messages (Test), topo...

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Abstract

The invention belongs to the technical field of Ethernet communication, in particular relating to a method for realizing redundant ring and network recovery in Ethernet. An Ethernet ring network is formed by a plurality of switches which are connected into a ring physically and are in a chain structure logically. The invention is characterized in that only one of the switches is set to be a master station in charge of controlling the logic structure of network, the other switches are set to be slave stations; the master station and each slave station are provided with two ring ports; the state switching of the ring ports of each switch can realize backup of redundant ring chain, thus realizing network redundancy and recovery. The invention has the beneficial effects of being capable of rapidly detecting chain fault in the ring, building new network topology to recover network in occurrence of fault, realizing backup of redundant ring chain through state switching of ring port of each switchboard; and the invention has simple and effective method and can realize high applicability of industrial control network.

Description

technical field [0001] The invention belongs to the technical field of Ethernet communication, and in particular relates to a method for realizing ring network redundancy and network restoration in the Ethernet. Background technique [0002] Due to its openness, stability, low cost, high transmission rate, easy networking and many other advantages, Ethernet technology gradually enters the field of industrial control and becomes an integral part of the automation communication network; and it is widely used in redundant networks composed of Ethernet The current network recovery methods are Spanning Tree Protocol (STP) and Rapid Spanning Tree Protocol (RSTP). Since the network recovery time is several seconds to tens of seconds, they cannot meet the real-time requirements of industrial control network communication. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method that can quickly detect link failures in th...

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Application Information

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IPC IPC(8): H04L12/437H04L12/24
Inventor 王钧炎张庆军包伟华詹辉辉宣言
Owner NO 3 AUTOMATION INSTR & METERS FACTORY SHANGHAI AUTOMATION INSTR & METERS CO LTD
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