XR7 Redundancy Supervision provides the HSR/PRP supervision feature described in the IEC62439-3 standard (HSR/PRP), which monitors HSR/PRP redundancy operation. If there is a single failure (e.g. link break) in the HSR/PRP network, it cannot be detected by any other protocol or application. That is why it is critical to have HSR/PRP supervision running in a redundant network. XR7 Redundancy Supervision provides this network monitoring information. XR7 Redundancy Supervision can be licensed with the Flexibilis Redundant Switch or SpeedChips XRS7000 devices. It is not sold separately.

The implementation of the XR7 Redundancy Supervision is written in pure C language and is ready to be used in Linux-based systems together with the Flexibilis Redundant Switch (FRS) or  XRS7000 devices. Hardware and operating system specific details are hidden behind an abstraction layer, so that porting to other operating systems and environments is easy. The XR7 Redundancy Supervision implementation is divided into a common part and a system-specific part. The common part remains the same for all environments and contains most of the functionality, including the generation of the supervision frames, processing of received supervision frames and maintenance of the NodesTable. The system-specific part provides standard interfaces for the common part, through which it can gain access to various operating systems. Porting XR7 Redundancy Supervision to other environments only requires changes to the system-specific part.