[ntp:questions] NTP - orphan mode with SAME stratum ("tos orphan 6") FAIL to sync.

Steve Kostecke kostecke at ntp.org
Tue Apr 7 12:24:50 UTC 2009

On 2009-04-07, David Woolley <david at djwhome.demon.co.uk> wrote:

> Steve Kostecke wrote:
>> It is imcumbent on the operator of an ntpd (or some "ntp client") to
>> use enough time sources so that an outlier that is off by 120ms will
>> be detected and voted out.
> Unruh actually meant 128 - epsilon milliseconds. The outlyer is the
> machine that is just starting!

Outlyer refers to a "peer" (i.e. upstream ntpd).

> If all the servers cluster within 1ms, but the machine starts up with an 
> error of 125 ms, ntpd will not step it, but will let it converge over 
> several hours.

That's the default behavior. As with most defaults, it may be changed
(either temporarily or permanently).

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

More information about the questions mailing list