[ntp:questions] LAN synch question

rochertov at gmail.com rochertov at gmail.com
Thu Sep 11 22:00:06 UTC 2008

Thank you for the responses.  I just have a few small clarification
I have used ntpdc and ntpq on the same machine that tries to synch
with an
ntp server (  The ntp server uses its own system clock
which is
not disciplined (need to figure out how to do that).  I am curious as
to why
the reported offsets are different.

ntpdc> peers
     remote           local      st poll reach  delay   offset    disp
=LOCAL(0)        5   64  377 0.00000  0.000000
*     6   16  377 0.00011  0.007474

[root at term1 etc]# ntpq -p ntp
     remote           refid      st t when poll reach   delay
offset  jitter
==========================================================   .BCST.          16 u    -   64    0    0.000
0.000   0.001
*LOCAL(0)        .LOCL.           5 l   51   64  377    0.000
0.000   0.001

Also, David, did you mean 100 nano-seconds or 100 micro-seconds?  I
would be
totally fine with 100 micro-seconds.  Would that be achievable if I
get a GPS
clock for the ntp server and keep the rest of the setup the same?
(These are
Linux 2.6.24 machines).  (an info about a cheap Linux compatible clock
be greatly appreaciated).

Many Thanks,

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