Date: Sat, 19 Dec 2009 14:10:40 +0200 From: Omer Faruk Sen <omerfsen@gmail.com> To: FreeBSD <freebsd-questions@freebsd.org> Subject: ntpq command output and unreachable state? Message-ID: <75a268720912190410x5bd2790du44299c0bbb2aca40@mail.gmail.com>
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Hi,
I am trying to understand output of ntpq -c peers (or ntpq -p). What I
am trying to understand that when a ntp server is announced as
unreachable. I have made a test. I setup a test ntp server with
/etc/ntp.conf
=============
restrict default nomodify notrap noquery
restrict 127.0.0.1
server 0.pool.ntp.org
server clock.isc.org
and started ntpd daemon using
/usr/sbin/ntpd -c /etc/ntp.conf -p /var/run/ntpd.pid -f
/var/db/ntpd.drift -g -l /var/log/ntpd.log
and blocked all port 123 traffic that goes out from this ntp server at
my gateway (to simulate to lost connection on ntp servers at ntp.conf)
After 26 hours later my ntpd still thinks that it can reach to
"clock.isc.org" (as can be seen with "*" mark before clock.isc.org
below)
# ntpq -c peers
remote refid st t when poll reach delay offset jitter
==============================================================================
+194.27.110.130 131.188.3.220 2 u 27h 1024 0 67.816 13.282 0.000
*clock.isc.org 204.123.2.5 2 u 26h 1024 0 224.461 -15.208 0.000
But I am sure that it can't reach (I sniff my firewall so no traffic
comes from clock.isc.org). My question is how can I find out that my
ntp servers defined at ntp.conf are unreachable (I know that if ntp
server is unreachable than my local ntp server stops to answer for ntp
requests)
Best Regards.
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