On Apr 5, 9:35 am, [EMAIL PROTECTED] wrote: > Computer clocks drifting is going to be the least of the worries > if there is ever an extended and wide spread GPS outage.
I would imagine there are some truly critical applications out there that rely on accurate time from NTP. And any critical application that relies on GPS should have an adequate backup in case of GPS failure. Airplanes/ships have intertial and radio navigation aids to backup GPS. Car owners should have (or can easily acquire) paper maps to back up their GPS. Surveyors have old-style mechanical devices to back up GPS. So GPS-disciplined stratum-1 NTP servers most likely have a failover arrangement with a non-GPS time soruce (such as USNO, NIST, WWV(B), DFC77, whatever) as a backup, right? But it appears at least some don't: ntpq reports that my organization's ISP has stratum-1 servers with GPS sources only. So they would, I think, start reporting 'unsynchronized' to clients in the event of a long GPS outage. _______________________________________________ questions mailing list [email protected] https://lists.ntp.isc.org/mailman/listinfo/questions
