Ethernet ring network failure recovery method, Ethernet ring network and switching equipment

Abstract

The invention discloses an Ethernet ring network failure recovery method, an Ethernet ring network and switching equipment. The method comprises the following steps that: main switching equipment sends a detection message carrying port mark information to transmission switching equipment in the ring network; after receiving the detection message, the transmission switching equipment, if port blockage exists in the transmission switching equipment, restores the blocked port thereof to a normal state when the port mark information in the transmission switching equipment indicates that the port blockage exists; when the port mark information in the transmission switching equipment indicates that the port blockage does not exist, the transmission switching equipment keeps one port in the blockage state, restores other ports to the normal state, and modifies the port mark information to indicate that the port blockage exists; the transmission switching equipment forwards the detection message to adjacent transmission switching equipment or main switching equipment; and after receiving the detection message from the port, the main switching equipment restores the port thereof in the blockage state to the normal state if the port mark information in the main switching equipment indicates that the port blockage exists. The method avoids communication interrupt caused by switching of blocked ports in the prior art.

Description

technical field

[0001] The invention relates to the technical field of network communication, in particular to an Ethernet ring network failure recovery method, the Ethernet ring network and switching equipment. Background technique

[0002] With the rapid development of Ethernet technology and the continuous improvement of applications, it has become an irresistible trend to use cost-effective Ethernet technology to build large-scale enterprise networks and metropolitan area networks. Ethernet is generally deployed as a ring topology network structure, such as figure 1 As shown, each device (including device A, device B, device C, and device D) uses two ports to interconnect with adjacent devices on both sides respectively, forming a ring topology network including a closed link.

[0003] A ring topology network constructed using Ethernet switches is called an Ethernet ring network. RFC3619 is called the Ethernet Automatic Protection Switching (Ethernet Automatic Protecti...

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