[SunHELP] NTP servers

[Leslie V Brigance]

On Fri, 15 Feb 2002, Simoncini, Matthew wrote:

| Hi all,
|
| Does anyone have any experience synchronizing the time on Unix servers
using
| NTP with NT servers. I work for a large consulting firm and we're
| responsible for the Unix servers at our client site, but we have a need
to
| synchronize with NT servers controlled by another company. Anybody with
any
| experience in this area?

Your best bet would be to sync the unix serves from the same NTP source
that the NTP servers are being synced from.

/dale

This is from an earlier post to this list:

HIH
Les


To:    <sunhelp at sunhelp.org>, <steve at velosystems.net>
cc:
Subject:    Re: [SunHELP] Synching time with NT machines

There are a bunch of freeware ntp clients for NT that seem to work well.
I'm using one of them now
as a MOF. http://www.meinberg.de/english/sw/ntp.htm  It runs over TCP 123
You can configure it for 2 ntp servers. Only caveat is to alter the log
settings on the clients to allow
overwrite as necc as the drift data gets logged for some reason..  I've had
it on our net for a few months now
syncing off of our main server and no problems to date. (server gets
stratum one pulse, workstations sync to
our server..)


>>> Steve Wingate <steve at velosystems.net> 11/01/01 12:39PM >>>
My understanding is that NT4's net time command only understands netbios;
it's not a real ntp so I don't believe it will talk to a ntp server, unless
your Solaris box is running Samba and it can be referred to by a netbios
name. ie "c:>net time \\solaris /set /y" would work as opposed to "c:>net
time \\a.b.c.d /set /y" which probably won't.
solaris = netbios name assigned to Solaris box
a.b.c.d = being the IP address of the Solaris box
The NT4 reskit has a real ntp client. Otherwise this has changed with
Win2k.


On Thu, 1 Nov 2001 11:05:05 -0500
"Sheldon T. Hall" <shel at cmhcsys.com> wrote:

> In Message: 3 From: OFrayman <OFrayman at VerticalAlliance.com> To:
> "'sunhelp at sunhelp.org'" <sunhelp at sunhelp.org> on Wed, 31 Oct 2001
> 14:41:04 -0500 ...
>
> >
> > I have been trying to use rdate to sync times with my NT boxes, but I
get
> > connetion refused.... Please help!!
> >
>
> I found that the easy way to do this was to run the Solaris machine as a
> time server and synch the NT boxes to it, rather than the other way
around.
>
> On Solaris, either run xntpd (see the man pages for details) _or_ add a
> proper ntpdate command to your root crontab.  xntpd would be more
accurate,
> but wants more network resources.
>
> On the NT boxes, use the scheduler or the "AT" command to run a "NET
TIME"
> command periodically.  NET TIME has an undocumented "/yes" option to
> suppress prompts so you can run it this way.
>
> On the PCs, I run "netdate" which, although its author says is obsolete,
is
> an excellent freeware time-setter.  It would be a good alternative for
NT,
> too, if your site's policies allow you to run outside freeware on
servers.
>
> So, my little site is a "time tree."  The Solaris box synchs to a number
of
> remote Stratun 2 time servers, and I synch the NT boxes and desktop PCs
from
> the Solaris box.
>
> -Shel