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-boun...@nanog.org on behalf of freetexwat...@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