NIST NTP servers

Tue May 10 14:55:42 UTC 2016

Ed, and anyone else reading this thread, I’m curious if you’ve looked at their authenticated NTP offering which uses different servers:

http://www.nist.gov/pml/div688/grp40/auth-ntp.cfm

We’re considering that but haven’t tried yet.

David

On 5/9/16, 11:01 PM, "NANOG on behalf of b f" <nanog-bounces at nanog.org on behalf of freetexwatson at gmail.com> wrote:

>Hello List,
>
>
>In search of stable, disparate stratum 1 NTP sources.
>
>Looking for anyone’s advice/experiences (good/bad/ugly/weird) using NIST’s
>NTP servers per: http://tf.nist.gov/tf-cgi/servers.cgi
>
>We tried using “time.nist.gov” which returns varying round-robin addresses
>(as the link says), but Cisco IOS resolved the FQDN and embedded the
>numeric address in the “ntp server” config statement.
>
>
>
>After letting the new server config go through a few days of update cycles,
>the drift, offset and reachability stats are not anywhere as good as what
>the stats for the Navy time server are - 192.5.41.41 / tock.usno.navy.mil.
>
>
>I would greatly appreciate and feedback / advice, etc.
>
>
>Thanks!!!
>
>
>Ed