HSR Standard Ed. 3 Introduces Mode X

Edition 3 of IEC 62439-3 has been approved on January 8th, 2016. IEC 62439-3 is the standard for High-availability Seamless Redundancy (HSR) and Parallel Redundancy Protocol (PRP).

Flexibilis Redundant Switch (FRS) supports the new edition, including the HSR Mode X it introduces. In HSR Mode X, nodes discard the duplicates in opposite direction. This reduces the amount of network load caused by the multicasts to about half and frees resources for other uses.

Devices in HSR Ring