Method for realizing redundant ring and network recovery in Ethernet

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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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 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.

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