[ntp:questions] National time standard differences
cc
cjcrickmar at googlemail.com
Tue Feb 9 11:00:45 UTC 2010
On 9 Feb, 10:19, David Lord <sn... at lordynet.org> wrote:
> cc wrote:
> > I've setup an NTP server in the south east asia region synchonising
> > with regional NTP servers as well as a couple of servers I am
> > responsible for in the US.
>
> > remote st t when poll reach delay offset jitter
> > ==============================================
> > +Japan 1 u 454 1024 377 87.402 -0.560 0.056
> > *Japan 1 u 476 1024 377 87.277 -0.810 1.542
> > -NorthAmerica 2 u 427 1024 377 285.387 -17.741 5.084
> > -NorthAmerica 2 u 429 1024 377 307.208 -17.061 0.083
>
> > Is the above delta seen between Japanese and North American time
> > sources purely the delta between the outbound / return network path or
> > something else?
>
> I'd say it is but you don't know for certain where any
> path difference is having an effect, obvious guess is
> the ones with largest delay.
>
> Is it possible (or allowed even) to run "ntpq -p Japan"
> and "ntpq -p NorthAmerica" to check what their billboards
> are.
>
> David
>
>
>
> > Chris
Sure is,
NorthAmerica
remote refid st t when poll reach delay offset jitter
==============================================================================
+x.x.x.x .GPS. 1 u 357 1024 377 59.276 -0.524 0.017
*x.x.x.x .GPS. 1 u 414 1024 377 28.865 -0.839 0.032
+peer 2 u 797 1024 377 22.819 -0.566 0.067
-peer 2 u 952 1024 376 23.532 -0.525 0.226
Japan
remote refid st t when poll reach delay offset jitter
==============================================================================
* .GPS. 0 l 57 64 377 0.000 -0.008 0.008
+peer .GPS. 1 u 23 64 377 1.298 0.007 0.009
+peer .GPS. 1 u 1 64 377 0.291 0.006 0.013
Chris.
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