Comment on Cisco aids Ukraine defense with modified switches to counter Russian attacksparentComments−femto2yPrecision Time Protocol [1] is an alternative. CERN has been using it as part of a project to achieve sub-nanosecond accuracy over a wired network [2].[1] https://en.wikipedia.org/wiki/Precision_Time_Protocol[2] https://en.wikipedia.org/wiki/White_Rabbit_Project−pezezin2yBut PTP needs a grandmaster clock, and that is usually a GPS receiver.−citrin_ru2yOr atomic clock.
Comments
Precision Time Protocol [1] is an alternative. CERN has been using it as part of a project to achieve sub-nanosecond accuracy over a wired network [2].
[1] https://en.wikipedia.org/wiki/Precision_Time_Protocol
[2] https://en.wikipedia.org/wiki/White_Rabbit_Project
But PTP needs a grandmaster clock, and that is usually a GPS receiver.
Or atomic clock.