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High-availability seamless redundancy (HSR) is a redundancy protocol for Ethernet networks that provides zero recoery time in case of a network failure. The feature of HSR makes it suited for time-critical and mission-critical applications, such as substation automation systems and military applications. However, the standard HSR protocol excessively generates unnecessary unicast traffic by redundant frame copies. This unnecessary redundant traffic causes high bandwidth consumption, resulting in the degradation of network performance. In this paper, we introduce a novel approach called ring-based dual paths (RDP) to reduce unnecessary unicast traffic in HSR networks. The purpose of RDP is to establish dual paths for forwarding unicast frames between nodes in HSR networks. Unlike dual virtual paths (DVP) approach, which establishes dual paths for each connection pair of terminal nodes, RDP sets up dual paths for each connection pair of terminal rings. Therefore, RDP significantly reduces control overhead in discovering and establishing dual paths, as well as the memory space required to store these paths compared with the DVP approach. The performance of RDP has been analyzed, evalu

Author

Nguyen Xuan Tien; Jong Myung Rhee

Publisher

ACM

Published

2016

Language

EN