[ntp:questions] Re: NTP Time Server for LAN: Broadcasting or Not?

W. D. WD at US-Webmasters.com
Tue Oct 5 05:58:07 UTC 2004


At 21:40 10/4/2004, Danny Mayer, wrote:
>"W. D." <NewsGroups at US-Webmasters.com> wrote in message 
>news:<416106CE.6E4E at US-Webmasters.com>...
>> Hi Folks,
>> 
>> I've got a FreeBSD - NTP time server configured on my small LAN.  Here's
>> some output:
>> 
>> ntpq> pe
>>      remote           refid       st t when poll reach   delay   offset 
>> jitter
>> 
>============================================================================
>===     
>> +navobs1.wustl.e .USNO.            1 u   41   64  333  178.181  -51.694
>> 131.381
>> +india.colorado. .ACTS.            1 u   37   64  377  192.120   84.779 
>> 45.140
>> *navobs1.oar.net .USNO.            1 u  106   64  376  191.750  114.124
>> 110.657
>> +now.cis.okstate .PSC.             1 u   40   64  377  192.337  118.809 
>> 53.212
>>  192.168.2.255   .BCST.           16 u    -   64    0    0.000    0.000
>> 4000.00
>>  
>> ntpq> rv
>> status=06e4 leap_none, sync_ntp, 14 events, event_peer/strat_chg,
>> version="ntpd 4.2.0 at 1.1161-r Sat Oct  2 18:23:29 CDT 2004 (1)",
>> processor="i386", system="FreeBSD/4.9-RELEASE", leap=00, stratum=2,
>> precision=-17, rootdelay=190.042, rootdispersion=208.241, peer=46454,
>> refid=navobs1.oar.net,
>> reftime=c50b792b.ab128f86  Mon, Oct  4 2004  2:24:27.668, poll=6,
>> clock=c50b7a1e.c01e94b3  Mon, Oct  4 2004  2:28:30.750, state=4,
>> offset=-23.313, frequency=-432.127, jitter=165.282, stability=110.396
>> 
>> How does one tell if this server is broadcasting properly?  
>> 
>You look at the clients.

Looked at my Windows client running K9:
http://www.Kaska.demon.co.uk/k9.htm
http://www.hcml.demon.co.uk/k9bin/k9v14.zip

K9 allows one to run with debug info, that answers
the question...

>> How often does it broadcast? 
>> 
>
>I'd like to know that myself. Looks like I'm going to have to dig
>into the code to find that out.

...approximately every 64 seconds.  K9 pops up windows that
tell how much the clock was adjusted, as well as the source IP
address.

>> Is there a way to control how often it broadcasts?
>> 
>Unlikely without changing the source code.

64 seconds is fine with me.  Changes to the client Windows computer's
clock are just a few milliseconds.

>
>> Also, the '*' and '+' tend to disappear and reappear.  Is this
>> possibly due to network congestion?
>> 
>
>It could be because of any number of factors. network congestion is
>just one possibility.


Start Here to Find It Fast!™ -> http://www.US-Webmasters.com/best-start-page/
$8.77 Domain Names -> http://domains.us-webmasters.com/




More information about the questions mailing list