[169007] in North American Network Operators' Group
Re: Need trusted NTP Sources
daemon@ATHENA.MIT.EDU (Jay Ashworth)
Sat Feb 8 19:47:03 2014
Date: Sat, 8 Feb 2014 19:46:40 -0500 (EST)
From: Jay Ashworth <jra@baylink.com>
To: NANOG <nanog@nanog.org>
In-Reply-To: <CAAAwwbU+CiTpjXjyAQE1rCT8EE+jX4XhywFPvOC+p4dw6YZPbA@mail.gmail.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
----- Original Message -----
> From: "Jimmy Hess" <mysidia@gmail.com>
> Don't forget poor performance due to high latency, or
> Server X emitting corrupted or inaccurate data
My two internal servers were my two uplink firewalls, and were pretty
thoroughly monitored. Had NTP gone insane, I've had heard about it.
Remember that 3 of the 8 peers on each machine were pool.ntp.org machines,
so the cluster, as a cluster, actually had *nine* external peers, each
machine having 3 in common, and three which were not (each machine was
a DNS resolver, so they didn't share a name cache on "*.us.pool.ntp.org"
Cheers,
-- jra
Cheers,
-- jra
--
Jay R. Ashworth Baylink jra@baylink.com
Designer The Things I Think RFC 2100
Ashworth & Associates http://www.bcp38.info 2000 Land Rover DII
St Petersburg FL USA BCP38: Ask For It By Name! +1 727 647 1274
