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

Brad Knowles brad at stop.mail-abuse.org
Mon Oct 4 08:52:00 UTC 2004


At 3:16 AM -0500 2004-10-04, W. D. wrote:

>  +navobs1.wustl.e .USNO.            1 u   41   64  333  178.181  -51.694
>  +india.colorado. .ACTS.            1 u   37   64  377  192.120   84.779
>  *navobs1.oar.net .USNO.            1 u  106   64  376  191.750  114.124
>  +now.cis.okstate .PSC.             1 u   40   64  377  192.337  118.809

	These are all Stratum 1 time servers, some of which are 
"restricted access", and at least one of which doesn't seem to be 
advertised as a publicly accessible Stratum 1 time server on the 
official list at 
<http://ntp.isc.org/bin/view/Servers/StratumOneTimeServers>.

	You need to re-read the "Rules of Engagement" page at 
<http://ntp.isc.org/bin/view/Servers/RulesOfEngagement> and make sure 
you comply with all the restrictions and requirements thereon.


	While you're at it, you should also read the community supported 
documentation at <http://ntp.isc.org/bin/view/Support/WebHome>, 
especially the page at 
<http://ntp.isc.org/bin/view/Support/SelectingOffsiteNTPServers>.

>   192.168.2.255   .BCST.           16 u    -   64    0    0.000    0.000
>  4000.00

	This appears to be a local Stratum 1 time server that you have 
set up on a nearby network (it uses RFC 1918 private networking 
space), but which appears to be non-functional.  You might want to 
look into getting this fixed.

>  How does one tell if this server is broadcasting properly?

	You check your clients that are supposed to be receiving those 
broadcasts, and see if they are.

>  Also, the '*' and '+' tend to disappear and reappear.  Is this
>  possibly due to network congestion?

	Read the official documentation page at 
<http://www.eecis.udel.edu/~mills/ntp/html/ntpq.html>, and pay close 
attention to the "Tally Codes" section.

-- 
Brad Knowles, <brad at stop.mail-abuse.org>

"Those who would give up essential Liberty, to purchase a little
temporary Safety, deserve neither Liberty nor Safety."

     -- Benjamin Franklin (1706-1790), reply of the Pennsylvania
     Assembly to the Governor, November 11, 1755

   SAGE member since 1995.  See <http://www.sage.org/> for more info.



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