nanog mailing list archives

Re: Cost effective time servers


From: Chris Adams <cma () cmadams net>
Date: Mon, 24 Jun 2019 21:35:09 -0500

Once upon a time, Forrest Christian (List Account) <lists () packetflux com> said:
I would submit that the proper use of a GPS receiver is for alignment
of the start of the second to a more precise value than can be
distributed across an asymmetric network like the Internet.  The
actual 'time label' for that second doesn't necessarily need to come
from GPS at all.  For security reasons, it's probably a good thing to
make sure you validate the data received from GPS in any case.

If you don't trust the GPS receiver's idea of the time, why do you trust
its start of the second?  It seems really odd to trust one and not the
other.
-- 
Chris Adams <cma () cmadams net>


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