This section does not apply to the Intel® PAC with Intel® Arria® 10 GX FPGA.
The OS time can be synchronized to a Napatech SmartNIC installed in the server. Only one SmartNIC can be configured as the reference. Any NTP client, PTP client or similar synchronization service must be disabled when synchronization to a Napatech SmartNIC is activated.
This figure shows an example where OS time in two servers is synchronized to a PTP grandmaster via two NT SmartNICs. This setup scales to as many servers as supported by the grandmaster and the network carrying PTP.
These ntservice.ini code lines configure NT SmartNIC #1 for the setup in Illustration.
TimeSyncOsTimeReference = adapter-1 TimeSyncReferencePriority = PTP, FreeRun
These ntservice.ini code lines configure NT SmartNIC #2 for the setup in Illustration.
TimeSyncOsTimeReference = adapter-2 TimeSyncReferencePriority = PTP, FreeRun