Determinate fault detection and positioning method and system in time sensitive network

Abstract

The invention discloses a determinate fault detection and positioning method and system in a time sensitive network, and the method comprises the steps: obtaining a global network topology in the timesensitive network, and determining a detection flow path with the minimum flow coverage according to the global network topology; generating a scheduling table according to the detection flow path, and sending the scheduling table to each switch in the time sensitive network, so that the switch in the time sensitive network sends a detection flow according to a corresponding moment in the scheduling table; and receiving a detection flow sent by a switch in the time sensitive network, and determining whether a link contained in a corresponding detection flow path has a fault or not and the specific position of the fault link according to the arrival state of the received detection flow. By adopting the scheme provided by the specification, the time uncertainty of fault detection and positioning can be reduced, and the purposes of detecting network faults in real time and ensuring the timeliness of the whole network topology are achieved.

Description

technical field [0001] This specification relates to the field of time-sensitive networks in industrial control, and specifically relates to a method and system for deterministic fault detection and location in time-sensitive networks. Background technique [0002] With the development of industrial network technology, deterministic transmission has become one of the key technologies in industrial control. As a representative of providing reliable and deterministic transmission, Time-Sensitive Network (TSN) is being adopted by the industry and will become a standardized industrial network communication technology. Time-sensitive networks mainly ensure reliable and deterministic transmission through time synchronization and real-time data scheduling. The time synchronization mechanism is implemented by the 802.1AS standard, and the real-time data scheduling is implemented by the 802.1Qbv standard. The global unified time and pre-planned schedule ensure message forwarding wit...

AI Technical Summary

Problems solved by technology

Due to the uncertainty of the transmission of the ordinary network itself, coupled with the uncertain number of iterations, the existing mechanism cannot meet the real-time detection and location of faults

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