[ntp:hackers] GPS weirdness with ntp-dev-4.2.0a-20050303

Bjorn Gabrielsson bg at lysator.liu.se
Sun Mar 6 13:45:39 PST 2005


Hi John,

I have seen something like your case. Internet time servers was
prefered over a local Trimble Accutime (Palisade). It looked
_something_ like this. 

*ntp1.xx.yy      .PPS.            1 u   32   64  377   16.592   -0.489   0.236
..
-GPS_PALISADE(0) .GPS.            0 l    6   16  377    0.000   -0.213   0.002

Using "ntpd 4.2.0a at 1.1190-r" on "Linux/2.4.21-NANO".

Will try to document it properly next time I see it.

br,
        Björn

John Pettitt <jpp at cloudview.com> writes:

> I just updated gatekeeper one of my FreeBSD servers from
> ntp-dev-4.2.0a-20050206 to ntp-dev-4.2.0a-20050303 and it's started
> selecting clocks other than the attached GPS.
> 
> Its started selecting solar (another box on the same lan daisy chained
> to the same Garmin GPS18) rather than the local GPS.  Any ideas on what
> changed between snapshots to make this happen? (there are so many diffs
> it's hard to tell).
> 
> gatekeeper# ntpq
> ntpq> pe
>      remote           refid      st t when poll reach   delay   offset 
> jitter
> ==============================================================================
> -GPS_NMEA(0)     .GPS.            0 l    9   16  377    0.000    0.010  
> 0.002
> *solar.localnet  .GPS.            1 u    2   16  377    0.804    0.074  
> 0.063
> [other clocks deleted for clarity]
> 
> Fragment of the conf:
> 
> server 127.127.20.0  mode 2 version 4 prefer minpoll 4
> fudge 127.127.20.0 flag3 1
> 
> server solar.localnet iburst minpoll 4 maxpoll 4
> [other clocks deleted]
> 
> John
> _______________________________________________
> hackers mailing list
> hackers at support.ntp.org
> https://support.ntp.org/mailman/listinfo/hackers




More information about the hackers mailing list