nanog mailing list archives

Re: NTp sources that work in a datacenter (was Re: Is latency equivalent to RTT?)


From: Sean Donelan <sean () donelan com>
Date: Wed, 14 May 2003 13:15:47 -0400 (EDT)


On Wed, 14 May 2003, Joel Jaeggli wrote:
Ask/pay/rent for roof access for the antenna, it's not large but it does
work better with an unobstructed video of the sky. There's also the
question of how many stratum=1 time sources a given datacenter needs. if
there's someone else with one it should be fairly unintrusive to share.

When I still worked at Equinix, we had NTP chimers in all the datacenters
which customers could either hardwire (IRIG-B, etc) or peer with NTP.

However, it seemed that people who cared about time always wanted to
have their own NTP chimers which they owned and controlled. The
concern about relying on third-parties, and even the theorotical
NTP attacks.



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