Do the transparent clocks in your datacenter support unicast PTP?

There is a possibility to use PTP as a transport for NTP to take advantage of PTP-specific hardware timestamping. It could also process the correction field, but it seems the switches typically don't support unicast PTP.

The large asymmetry and banding of NTP in the test with Calnex Sentinel suggests it doesn't support the interleaved mode. NTP with hardware timestamping should normally be much more stable and symmetric, closer to PTP.