[ntp:questions] GPS receivers were severely disrupted on 06 Dec 2006

jimp at specsol.spam.sux.com jimp at specsol.spam.sux.com
Thu Apr 5 14:35:03 UTC 2007

Ryan Malayter <malayter at gmail.com> wrote:
> .

> On Apr 5, 5:12 am, Marc Brett <use... at fordson.demon.co.uk> wrote:
> > Was NTP affected by this?

> I'd imagine that brief interruptions in GPS signals would affect some
> stratum-1 severs, but their peering arrangements and drift files
> should as a fallback time source to make this all but unnoticable to
> clients. A well-designed NTP network should be resistant to short
> localized failures, even in refclocks.

> An extended GPS outage could definitely affect NTP worldwide, as I
> believe a large percentage of refcloks are GPS-based.

Computer clocks drifting is going to be the least of the worries
if there is ever an extended and wide spread GPS outage.

Jim Pennino

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