Help with xntp config ( xntpd on AIX 5.1 and 5.2 )

From: Chris Allen (go_uc_bearcats_at_hotmail.com)
Date: 05/21/04 

Date: 21 May 2004 07:01:04 -0700

I'm trying to setup an ntp hierarchy and I'm getting more and more
confused by the stratum, server, peer, fudge, and prefer settings in
the /etc/ntp.conf file.

Here's my situation and what I'm trying to accomplish:

We have 4 very distinct environments (DEV, TEST, QA, and PROD) each
with between 3 and 10 AIX 5L images.

I would like one server in the PROD environment to be the one system
that syncs its time with clocks outside of our company. Would this
system be considered a stratum 1 system? Also, the other systems in
the PROD environment would sync to this.

I would also like one server in the other 3 environments to sync to
the "company time master" from above. Also, the other systems in the
same environment(Test, Dev, or QA) would sync to these 3 systems.
Would these 3 systems be stratum 2?

Thus, would all my other systems be stratum 3 (including those in the
PROD environment that I would sync to the stratum 1 system mentioned
above)?

Totals: stratum 1=1 stratum 2=3 stratum 3=everything else

Or, would I be better off spreading out the stratum priorities to say
1, 3, & 5?

My confusion stems from the various posts I've read and the lack of
information available about how to setup ntp.conf in the AIX man
pages.

Clarification of how I would use the server, peer and fudge keywords
would be very helpful.

Any assistance is appreciated and it will certainly help clarify how
to setup the 3 very distinct configuration files for my topology.

Regards,

Chris Allen

Relevant Pages

  • Cannot synchronize to server with local clock
    ... fudged at a high stratum like 8 or 10. ... The *server* stratum varies from 16 ... Without sync machines will diverge. ... and another one stratum 14 on a given client. ...
    (comp.protocols.time.ntp)
  • Re: Cannot synchronize to server with local clock
    ... > I have dial-up internet, so my network is only ever on the net some of ... fudged at a high stratum like 8 or 10. ... The *server* stratum varies from 16 ... artificially extends sync forever. ...
    (comp.protocols.time.ntp)
  • Re: Help with xntp config ( xntpd on AIX 5.1 and 5.2 )
    ... >I would like one server in the PROD environment to be the one system ... >system be considered a stratum 1 system? ... >same environmentwould sync to these 3 systems. ... >Clarification of how I would use the server, peer and fudge keywords ...
    (comp.unix.admin)
  • Re: Architecture / best practice for small/medium company setups
    ... Make your best one the "master" for your network. ... Take your 2nd best server and have it sync to your master and whatever other ... and assign its local refclock to a stratum 2 worse than ...
    (comp.protocols.time.ntp)
  • Re: win32 undisciplined local clock sync time
    ... My server is win2003 setup with meinberg's ... 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. ...
    (comp.protocols.time.ntp)