Path: utzoo!utgpu!watserv1!watmath!att!pacbell.com!ucsd!ucbvax!FARBER.HARVARD.EDU!ellozy
From: ellozy@FARBER.HARVARD.EDU (Mohamed Ellozy)
Newsgroups: comp.protocols.time.ntp
Subject: Re:  xntp and Ultrix stock ntp
Message-ID: <9012131515.AA11800@farber.harvard.edu>
Date: 13 Dec 90 15:15:16 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Distribution: inet
Organization: The Internet
Lines: 19

DEC runs ntpd (the trantor.umd.edu original code) while your other chimers
run xntpd.  There are minor interoperability problems.  The worse is with
the query programs, ntpdc does not speak to xntpd, and ntpq does not speak
to ntpd (actually, they speak but get no answers).

To get an xntpd host to sync to an ntpd host, you must put in the ntp.conf
file a line like:

	peer 123.456.789.012	version 1

Of course, you can run xntpd on your DEC hosts, though it makes sense to
run what you get.

A long delayed question:  How do people feel about ntpd vs xntpd?  I went
over to xntpd on the assumption that the latest version is by definition
the best, but worry that the anti clock hopping code makes it too difficult
to junk bad clocks.

Mohamed