[ntp:questions] Using ntpdate -b SERVER shortly after SERVER boots

Steve Kostecke kostecke at ntp.isc.org
Sat Feb 10 02:24:40 UTC 2007

On 2007-02-09, Richard B. gilbert <rgilbert88 at comcast.net> wrote:
> Donald Murray, P.Eng. wrote:

> [---=| Quote block shrinked by t-prot: 33 lines snipped |=---]

Please trim the material you are quoting.

> If it's a "warm" start; e.g. you have a valid drift file, the server 
> should be usable in five to ten minutes

If you are using iburst ntpd will chose a syspeer in ~20 seconds and, at
that moment will no longer be at stratum 16. That's all you need to
start serving time.

But, keep in mind that the OP has clearly stated that the "servers" only
have the Undisciplined Local Clock. And, as we all know, 'iburst' has no
effect on ref-clocks.

> An uninterruptable power supply is a very good investment here;
> it minimizes the the reboots because the power company "burped"!

The OP has clearly stated that (1) there are thousands of isolated
networks and (2) that a GPS is out of the question. If a GPS is cost
prohibitive, so to too would be a UPS.

Steve Kostecke <kostecke at ntp.isc.org>
NTP Public Services Project - http://ntp.isc.org/

More information about the questions mailing list