[63279] in North American Network Operators' Group
RE: NTP, possible solutions, and best implementation
daemon@ATHENA.MIT.EDU (Vachon, Scott)
Thu Oct 2 16:29:29 2003
From: "Vachon, Scott" <Scott.Vachon@paymentech.com>
Date: Thu, 2 Oct 2003 16:19:07 -0400
To: undisclosed-recipients: ;
Errors-To: owner-nanog-outgoing@merit.edu
> Michael.Dillon@radianz.com wrote:
> > Beware the single point of failure. If all your clocks=20
> come from GPS, then
> > GPS is the SPOF.
>=20
> Can you describe what would be involved to cause this sort of single
> point of failure to fail?
>=20
> Eliot
>=20
just me wrote:
> - Antenna failure
> - Radio failure
> - Unforseen GPS protocol issues
Except that as I read it, "all your clocks" meant more than one NTP server =
at more than one location. I'd guess the probability of complete failure is=
much lower in that case. Further, Cisco at least, recommends using at leas=
t 3 NTP sources to help maintain sanity on the equipment using the NTP. The=
bug you reference by the way, is on a page dated from 1999. I'm not sure o=
f the relevancy now.=20
Does anyone on the NANOG list actually deploy standalone equipment ???=20
My two cents.
~S~
=20
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