Research on path dynamic redundancy strategy in Time Sensitive Network

Focusing on the high reliability requirements of Time Sensitive Networks, the research on path dynamic redundancy technology is carried out to address the problem that the existing redundancy technology cannot provide high reliability guarantee for discontinuous multiple single node failures.Based on the existence of two disjoint redundant paths in the network for seamless transmission, a path dynamic redundancystrategyis designed on the basis of IEEE 802.1CB protocol and IEEE 802.1Qcc protocol.Firstly, the dynamic variable length sliding window VariableVectoryRecovery algorithm is improved in the sequence recovery function for frame replication, node failure detection, and reported to the centralized network configuration management node.Secondly, a multi-objective optimized BackupReroute model is proposed to repair thepath in terms of delay and bandwidth, and solved by genetic algorithm to ensure network reliability while minimizing network load and dynamically reorganizing the redundant system. The theoretical analysis proves that this path dynamic redundancy strategy can provide high reliability guarantee for discontinuous multi-node failures.Comparing with other routing algorithms, the BackupReroute model overall performance is better.Finally, the simulation experiment of VariableVectoryRecovery algorithm is conducted on OMNeT++, and the results prove that it can effectively reduce the packet loss rate.