[ntp:questions] Re: win32 undisciplined local clock sync time
kostecke at ntp.isc.org
Fri Nov 18 14:20:17 UTC 2005
On 2005-11-18, Skunk Worx <skunkworx at verizon.net> wrote:
> My server is win2003 setup with meinberg's
> ntp-4.2.0b at 20051016-1.1417-o-win32-setup.exe
> The clients are all Fedora Core 4 linux, Fedora ntp version is
> I've setup the ntp.conf on the server with :
> driftfile "C:\Program Files\NTP\etc\ntp.drift"
> server 127.127.1.0 prefer
> fudge 127.127.1.1 stratum 8 refid NIST
> disable auth
ntpd is intended to be used in conjunction with a source of time.
The undisciplined local clock (127.127.1.x) is not appropriate for this
> 1) The service on the win2003 box takes 2-3 minutes to drop from stratum
> 16 to stratum 9. The linux boxes won't sync to stratum 16, so I have to
> wait several minutes between booting the server and the clients. Is
> there a way to make the win32 box sync faster?
> 2) If I reboot the linux clients after a couple of days I get a "too
> long without sync" message, and the service on the win2003 box has to be
You would be better off making one of your linux systems the
"undisciplined local master ntpd" and "syncing" your win2003 to it.
> with another wait of 2-3 minutes to drop from stratum 16 to stratum 9,
> then reboot the linux clients.
Restarting ntpd on the linux systems should be sufficient.
>Is there a way to configure the linux NTP daemons to sync to the server
>even though the server has aged?
> 3) Are IRIG sync'd rackmount NTP servers commonly available?
Here's one: http://www.ese-web.com/299.htm
http://www.google.com/search?q=IRIG+rackmount+ntp+server for links to
Have you thought about adding an IRIG PCI card to the system hosting
your "local master ntpd" ?
Here are some links:
> 4) True NIST-traceable time is not important to me,
Then why are you telling your undisciplined local clock to use "NIST"
as its ref-id?
> relative time is.
Keep in mind that your "time island" will drift unless you provide a
stable time reference.
Steve Kostecke <kostecke at ntp.isc.org>
NTP Public Services Project - http://ntp.isc.org/
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