[ntp:questions] NTP reachable but rejected

Moses Truong moses_truong at ntm.org.pg
Sun Dec 20 23:31:45 UTC 2009

> Dave Hart wrote:
> ntpq told you the key piece of information with "flash=400 peer_dist,"
> -- in that version of ntpd, flash=400 is associated with the peer
> distance test, which is looking at a peer_distance calculation based
> on the rootdelay and rootdispersion peer variables, as well as the
> additional delay and dispersion in the communication with that peer.
> In the current code, the threshold peer_dist indicates has been
> exceeded defaults to 1.5 (seconds) and can be modified in ntp.conf
> with "tos maxdist 2.5" for example, though I would not advise it
> except as a short-term diagnostic step.
> Cheers,
> Dave Hart
Actually your suggestion fixed the clients running CentOS. I've found a 
problem with Ubuntu in that changing /etc/ntp.conf doesn't seem to 
affect the NTP daemon... I'll check with Ubuntu to see if this is a bug 
or not.


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