PTP monitoring in redundant network

Redundant Ethernet topologies such as Rapid Spanning Tree Protocol (RSTP), High-availability Seamless Redundancy (HSR) and Parallel Redundancy Protocol (PRP) are used in automation systems. Commonly Precision Time Protocol (PTP) is used to synchronize nodes in such networks. The redundant topology can be utilized to monitor PTP functionality - such as to detect asymmetries, non-functional devices and to help during installation and operation.

[1]  Juergen Jasperneite,et al.  Automatic determination of synchronization path quality using PTP bridges with integrated inaccuracy estimation for system configuration and monitoring , 2015, 2015 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control, and Communication (ISPCS).