Improvement of high-availability Seamless Redundancy (HSR) traffic performance
Saad Allawi Nsaif, Jong Myung Rhee · International Conference on Advanced Communication Technology · 2012
High-availability Seamless Redundancy (HSR) is a redundancy protocol for Ethernet (IEEE802.3) networks that provides duplicated frames for separate physical paths with zero recovery time. This means that even in the case of a node or a link failure, there is no stoppage of network operations whatsoever. HSR is suitable for mission critical Ethernet applications, but its main drawback is the extra traffic created due to the redundant frame copies that are generated and circulated inside the network, especially when using multi-broadcast applications, such as video or audio streaming. This downside will degrade the network performance and may cause network congestion or delays.