Single-loop network implementation method

Abstract

The invention discloses a single-loop network implementation method. An interface processing module is additionally arranged in front of a network interface of each loop network device of a single-loop network. Two PHY interfaces are driven by each interface processing module. According to the single-loop network implementation method, the single-loop network is formed in the mode that hot standby processing is conducted on a message, when a link of the single-loop network breaks down, the message can be effectively prevented from being lost, the defects of a loop network protocol are effectively overcome, and the problem that packet loss of an STP, an RSTP, an MSTP and an MRP at present happens in the link switchover process can be solved.

Description

technical field [0001] The invention relates to a communication network redundancy technology, in particular to the situation of a single ring network and requiring zero message loss due to ring network failure. Background technique [0002] Currently, the protocols that constitute a single ring network include STP, RSTP, MSTP, and MRP. [0003] Spanning Tree Protocol (STP), Rapid Spanning Tree Protocol (RSTP), and Multiple Spanning Tree Protocol (MSTP) are topology management protocols applied to Layer 2 communication networks. Devices with Layer 2 switching functions run the spanning tree protocol, and send bridge protocol data units (Bridge Protocol Data Unit, BPDU) to each other. The main information in the BPDU includes STP version, BPDU type, identification field, root bridge ID, and root path Overhead, designated bridge ID, designated port ID, and various time values, among which the root bridge ID, root path cost, designated bridge ID, and designated port ID form a ...

AI Technical Summary

Problems solved by technology

After a network link fails, it is necessary to send messages between devices to change the topology structure. There will be a certain period of time between the link failure and the backup link startup. Some devices will be interrupted in communication, and zero message loss cannot be achieved.

[0004] The single-ring network-based media redundancy protocol (MRP) is a single-ring network-based media redundancy protocol developed on the basis of RSTP. This protocol also has a certain period of time from link failure to standby link startup. Device communication interruption problem, unable to achieve zero message loss

[0005] According to the above description, there are certain problems in the existing single-ring network technologies. STP, RSTP, MSTP and MRP protocols cannot solve the problem of packet loss during link switching. network, which limits the application of single ring network technology

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