About SekleckiB

SekleckiB · 07-13-2026

When an IE-4100 / Catalyst IE-9300 is in PTP-Grandmaster mode, using NTP as reference time, where does the PTP_Account obtain the currentUTCOffset value?Does IOS-XE/IOS-XR/NX-OS have a built-in database?I know that it can be manually overridden with:...

SekleckiB · 11-09-2026

The most salient details for one to consider:* When an GNSS/GPS-fed NTP server receives time from a GPS Satellite, the GPS protocol has a mechanism to transmits a "leap second" value.* Once converted to the NTP protocol (inside GPS Grandmaster applia...

SekleckiB · 07-13-2026

I stand corrected, via Wireshark, I see that:When in PTP Mode "ptp mode gm-bmc" (NTP to PTP gateway), I see now that an IE-4000/IE-4100 will transmit PTP Announce "currentUTCOffset" as zero (0)When in PTP Boundary Mode without an upstream PTP Grandm...

Member Since	‎07-13-2026 02:01 AM
Date Last Visited	‎11-09-2026 12:40 AM
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[Industrial] PTP Grandmaster Mode - Source of PTP currentUTCOffset Val

Re: [Industrial] PTP Grandmaster Mode - Source of PTP currentUTCOffset

Re: [Industrial] PTP Grandmaster Mode - Source of PTP currentUTCOffset