[ntp:questions] Issues trying to sync to NIST public servers

Matthew Huff mhuff at ox.com
Fri Feb 1 14:42:34 UTC 2019


Yes, this is a common PITA. FINRA and/or SEC getting onto you? They are still "defining" the regulation, but the current idea is rather silly. Many of the NIST servers are run out of the University of Colorado and are single home with CenturyLink. Congestion and/or other network issues causes false alarms all the time.

IMHO, if FINRA is going to require something like that, then NIST should provide hardened NTP/PTP services at major peering/colocation facilities.

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Matthew Huff             | 1 Manhattanville Rd 
Director of Operations   | Purchase, NY 10577
OTA Management LLC       | Phone: 914-460-4039

-----Original Message-----
From: questions [mailto:questions-bounces+mhuff=ox.com at lists.ntp.org] On Behalf Of elirov at espoc.com
Sent: Wednesday, January 30, 2019 4:24 PM
To: questions at lists.ntp.org
Subject: [ntp:questions] Issues trying to sync to NIST public servers

We're having issues syncing to all nist servers:
https://tf.nist.gov/tf-cgi/servers.cgi

But are easily able to sync to time.google.com and pool.ntp.org.

ntpq -p shows reach numbers that clearly indicate intermittent failures (even numbers etc) when going against any nist server (including time.nist.gov, but zero failures and almost immediate reach of 377 when syncing to pool.ntp.org or time.google.com.

Unfortunately, government regulations require us to sync to a public NIST server.  Any ideas?

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