Re: A lurker surfaces

From: Ashley Yakeley <ashley_at_SEMANTIC.ORG>
Date: Tue, 02 Jan 2007 13:44:17 -0800

M. Warner Losh wrote:
> GPS is also used for UTC today. Many ntpd's are stratum 1 tied to a
> GPS receiver.

I imagine two parallel time infrastructures, one synchronised to TAI,
the other to "rubber" mean universal time. Stratum 0 devices for the
latter would probably have to use radio.

So, sure, there's an infrastructure cost for a sensible time of day...

> ntpd is UTC, by definition.

I wonder how easily NTP could be generalised to transmit different
timescales without too much confusion? Using different UDP port numbers
might be one option.

Ashley Yakeley
Received on Tue Jan 02 2007 - 13:44:39 PST

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