[ntp:questions] Atomized NMEA using second numbering from other server

Miguel Gonçalves mail at miguelgoncalves.com
Fri Oct 14 11:43:40 UTC 2011


Hi all!

This is the billboard from one of my servers (ntp 4.2.6p3):

tock# ntpq -p
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
oGPS_NMEA(0)     .GPS.            0 l    6   16  377    0.000   -0.001   0.003
+ntp-p1.obspm.fr .TS-3.           1 u    6   64  377   44.396    0.860   1.342
+ptbtime1.ptb.de .PTB.            1 u   34   64  377   68.039    2.179   0.698
-ntp1.oma.be     .PPS.            1 u   43   64  377   52.612    4.312   0.819
*canon.inria.fr  .GPSi.           1 u   60   64  377   44.358    1.177   0.902
-ntp1.nl.uu.net  .PPS.            1 u   49   64  377   57.991    3.550   0.989

Does the tally code * mean that NTP is getting the seconds from
canon.inria.fr? The NMEA driver is configured as prefer.

On another server (4.2.7p222) I am getting

tock# ntpq -p tick
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
*GPS_NMEA(0)     .GPS.            0 l   13   16  377    0.000    0.561   1.374
oPPS(0)          .PPS.            0 l   12   16  377    0.000   -0.001   0.004
+ntp-p1.obspm.fr .TS-3.           1 u   30   64  377   44.128    1.085   0.779
+ptbtime1.ptb.de .PTB.            1 u   18   64  377   65.281    0.412  11.300
-ntp1.oma.be     .PPS.            1 u   26   64  377   52.953    4.699   3.274
+canon.inria.fr  .GPSi.           1 u   26   64  377   44.764    1.471   1.906
-ntp1.nl.uu.net  .PPS.            1 u   27   64  377   56.525    2.892   0.987

Here ntp is getting the seconds from GPS_NMEA.

What happens when the first server looses it's connection to the Internet?

TIA,
Miguel


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