From: Copper, Steve (scopper@westernpower.co.uk)
Date: Mon Sep 30 2002 - 08:35:05 EDT
Hi All,
I am having a problem with NTP. The set-up is as follows:
I have 12 Tru64 servers (5.1a PK2) dotted around the country and therefore
on different class b subnets. My time server, to which all the servers are
pointing, is located at one site along with 2 of the servers.
All the servers are set up in exactly the same way - contents of
/etc/ntp.conf is
<location of driftfile>
server ntpsrv version 3
The process that is running on all servers is "/usr/sbin/xntpd -g -c
/etc/ntp.conf". The parameter ntpsrv is in the local hosts file and can also
be seen by doing a nslookup command to the DNS.
The problem that I have is that the 2 servers on the same subnet are
obtaining a valid time signal from the time clock but all the others aren't.
Below is an output of an "ntpq -p" command on one of the working servers.
remote refid st t when poll reach delay offset
jitter
============================================================================
==
*ntpsrv.westernp .MSF. 1 u 16 1024 377 0.977 0.280
0.191
All of the servers which are not on the same subnet as the time clock show
this for the command
remote refid st t when poll reach delay offset
jitter
============================================================================
==
ntpsrv.westernp .MSF. 1 u 16 128 377 6.836 5.708
0.749
and are not keeping time. (There is meant to be a white space character
before the ntpsrv.westernp, indicating the peer was discarded due to high
stratum or failed sanity checks).
>From every server I can "ping" the time clock with the longest delay being
9ms for the furthest away server. Stopping the ntpd daemon and doing an
ntpdate command works and brings the time back into line.
Would anyone have any ideas why the servers which are not on the same subnet
are not receiving a valid signal, especially as the ntpdate command seems to
work. Other servers (AIX) on different subnets are receiving a good signal
and are synced in fine.
Thanks in advance
Steve Copper
_________________________________________________________________
This email and any files transmitted with it are confidential and
intended solely for the use of the individual or entity to whom
they are addressed. If you have received this email in error
please notify postmaster@westernpower.co.uk.
This footnote also confirms that this message has been swept
for all known viruses by the MessageLabs Virus Scanning Service.
For further information please visit http://www.messagelabs.com
This archive was generated by hypermail 2.1.7 : Sat Apr 12 2008 - 10:48:54 EDT