[ntp:questions] Re: Linux NTP Polling

Darren Dunham ddunham at redwood.taos.com
Tue May 10 15:00:13 UTC 2005

Geoff <g_wynn at ozemail.com.au> wrote:
> Hello,

> I have a Linux based switch that I need to have syncronise with an NTP
> server.  It WILL sync on startup and the time/date is correct but if the NTP
> time source is changed (date time change) the Linux Switch does not change
> it's time to reflect.

How big of a change?  NTP is supposed to keep systems in sync, not
propogate large changes quickly.

> The NTPD Daemon is supposed to (I am told) do this automatically but
> it does not.

How long did you wait?  Were there any messages in the system log?  What
does ntpq -p show?

The changes should propogate eventually unless you leave the 1000s
sanity boundary.  If you do that, ntpd will assuming something is very
wrong and exit.

> I have set-up in /etc the ntp.conf file with an ip address of the NTP time
> source and also in /etc/ntp/step-tickers the same ip address.  Now as I say
> this appears to sync upon boot-up when the Daemon first starts but never
> again.

> I need to know how to make this switch Poll the NTP Server to maintain time
> with it.  It does not seem to be polling for the time source after intitial
> sync.

show 'ntpq -p' output.

Darren Dunham                                           ddunham at taos.com
Senior Technical Consultant         TAOS            http://www.taos.com/
Got some Dr Pepper?                           San Francisco, CA bay area
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