Re: Setting Up NTP for Time Sync

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Date: 5 Jan 2005 10:25:10 -0800

W. Watson wrote:
> I'm running two machines. One is an XP Pro box called solarblast, and
the
> other is a
> RHL9 box called astropc2004. I see that ntp is running on the Linux
box. I
> would like
> to be able to set its time via the accurate time solarblast keeps.
How do I
> do that?
> I do not see a ntp man page. There is a /etc/ntp.conf. Do I need
Samba?

The links below are useful but "solution" evades me at the moment.

Was just reading this:
http://www.die.net/doc/linux/man/man1/ntpd.1.html

Before doing anything else, check that XP Pro _can_ act as a conformant
-- ie., not extended by MS -- time server. If so, you will use ntp to
connect Linux to XP Pro -- via TCP/IP, no samba should be needed. If
not, you may be SOL :(

Note: Just ran into a reminder -- XP uses MS's SNTP and not a
conformant ntp. Has to do with Kerberos authentication as
used/extended by MS, IIRC. Been a while since I've dealt with this.
Something in my "archives"? Need to look.

You may need to check out the new ntpv4 requirements:
http://www.eecis.udel.edu/~mills/ntp/html/index.html

Then again, you can use the Linux ntpd to connect to the same time
server and request joining a multi-cast group (can XP?) so that both XP
and Linux process the same packets. ???

Maintainging accurate RTC time on Linux is a bit problematic. Most
(default) installations use hwclock which is really meant to work with
a 24/7 box to calculate drift and adjust time. If you frequently (more
than once a month) turn off your Linux box you probably need to look
into Chrony:

http://www.tldp.org/HOWTO/TimePrecision-HOWTO/ntp.chrony.html
http://chrony.sunsite.dk/index.php/

Rather than 86 this whole post I'll get back later after I've had a
chance to look further -- I ought to in order to be prepared for the
(inevitable) day that I must get XP and Linux time synching.
Excuse the bandwidth usage.

see ya'
prg
email above disabled

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