Time-sensitive network frame copying and eliminating and seamless redundancy interconnection method

Abstract

The invention relates to a time sensitive network frame copying and eliminating and seamless redundancy interconnection method, and belongs to the technical field of industrial control. According to the method, a redundancy label conversion function is added to an output port of a backbone switch adjacent to an HSR looped network, interconnection of different redundancy protocols of a backbone network and a subnet is achieved, and the reliability of the whole network is guaranteed. The method is based on a network topology formed by the backbone network and the subnet based on the Ethernet, the backbone network switch realizes an FRER mechanism, the sub-net realizes an HSR mechanism, the network communication reliability of the backbone network and the subnet is respectively ensured, and interconnection of the whole network is realized by adding a conversion module in the network equipment, so that the fault tolerance performance of the whole network is ensured.

Description

technical field [0001] The invention belongs to the technical field of industrial control, and relates to a time-sensitive network reliability mechanism frame replication and elimination (Frame Replication and Elimination for Reliability, FRER) and high-availability seamless redundancy (High-Availability Seamless Redundancy, HSR) interconnection method. Background technique [0002] Ethernet is considered to be the future communication standard for distributed embedded systems in the automotive and industrial fields, but the challenge is that the Ethernet media access control adopts the carrier sense multiple access mechanism with collision detection (CSMA / CD, CarrierSense Multiple Access / CollisionDetection), the information transmission delay has unpredictable randomness, and cannot guarantee the definite low-latency transmission of Ethernet frames. In 2005, the IEEE 802.1 task group formulated AVB, Ethernet Audio Video Bridge (EthernetAudioVideoBridge), which is a protoco...

AI Technical Summary

Problems solved by technology

But here's the problem: (1) it's expensive to build two separate networks for redundant traffic; (2) it requires implementing PRP on the endpoints

Although a redundancy scheme based on frame replication and elimination is provided in a time-sensitive network, there is a lack of detailed elaboration on how the peer system and forwarding system integrate these functions and the interconnection method for other reliability mechanisms that do not support the FRER redundancy mechanism.

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