Quick switching method for Ethernet redundancy ring network

Abstract

The invention provides a quick switching method for an Ethernet redundancy ring network, which is applied in an Ethernet redundancy ring network comprising one management node and a plurality of assistant nodes, wherein the management node comprises a management port and an assistant port, and the assistant node comprises a ring port for receiving and forwarding. The method comprises: periodically sending a detection message from the management port by the management node, and receiving the detection message from the assistant port of the management node; when the ring network fails, setting the assistant port into a blocking state; when the ring network restores, setting the assistant port into a blockage state; and applying the assistant node to receive and forward the detection messageof the management port. The method can shorten ring network convergence time.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a fast switching method for an Ethernet redundant ring network. Background technique [0002] In industrial Ethernet communication, ring network redundancy technology is usually used. However, this technology is usually implemented using the standard STP or RSTP protocol. Using this protocol makes the ring network redundancy switching time generally several seconds or even tens of seconds. Such a long convergence time cannot meet the requirements of modern communication. [0003] In addition, the detection mechanism of node port link failures in the ring network also directly affects the convergence time of the ring network. When an industrial Ethernet switch builds a ring network, the physical layer (PHY) chips of the ports used by the switch are quite different in terms of performance and cost, and the difference in performance directly affects the convergence time of th...

AI Technical Summary

Problems solved by technology

At present, the usual practice in the industry is to use the PHY chip to detect the physical status of the external port link. The CPU chip periodically reads the PHY port status. Some low-cost PHY chips respond slowly to the detection of port failures, which seriously affects the ring network. In addition, different PHY chips have different sensing sensitivities to the external link status. Slow sensing will cause the link-down event to lag behind, thus affecting the convergence time of the ring network.

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