Learn how the PTP operator integrates NTP for time synchronization, ensuring system clocks remain accurate and within 1 millisecond of accuracy even in the event of GNSS failure.

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Red Hat Developer

The Red Hat PTP operator now integrates NTP as a fallback time source when GNSS signal is lost and hardware holdover expires. The implementation adds a containerized chronyd managed via a ptpconfig CRD, internal process controls to switch between phc2sys (GNSS/PTP) and chronyd (NTP) without full restarts, and a state machine driven by ts2phc log parsing to trigger failover or recovery. This keeps system clock accuracy within 1 millisecond even during prolonged GNSS outages. Future work includes O-RAN NTP event types and GNSS-to-PTP failover support.

Owning the system clock: Good enough?