Folkert van Heusden schrieb: > Hi, > > It seems the Dutch NMi organisation (which is the time reference for the > Netherlands) has an NTP-service as well. Now I tried retrieving the time > with ntpdate (just to see if it was reachable) but ntpdate refuses it. > Using the regular ntp daemon works fine. Could someone enlighten me why > it is refused? I mean: "has gone too long without sync" seems a little > odd as it is supposed to be connected to real atomic clocks. > > folk...@belle:~/bin$ /usr/sbin/ntpdate -d -q -u -t 1 -p 4 ntp.nmi.nl > 7 Jan 17:49:01 ntpdate[22293]: ntpdate [email protected] Wed Jul 16 12:36:25 > UTC 2008 (1) > transmit(134.221.205.12) > receive(134.221.205.12) > transmit(134.221.205.12) > receive(134.221.205.12) > transmit(134.221.205.12) > receive(134.221.205.12) > transmit(134.221.205.12) > receive(134.221.205.12) > transmit(134.221.205.12) > 134.221.205.12: Server dropped: Server has gone too long without sync > server 134.221.205.12, port 123 > stratum 1, precision -18, leap 00, trust 000 > refid [IRIG], delay 0.03783, dispersion 0.00012 > transmitted 4, in filter 4 > reference time: cd0c473b.73087696 Mon, Jan 5 2009 9:45:47.449 > originate timestamp: cd0f5b7d.d6ff250b Wed, Jan 7 2009 17:49:01.839 > transmit timestamp: cd0f5b7d.cf7e90ff Wed, Jan 7 2009 17:49:01.810 > filter delay: 0.03938 0.03787 0.03879 0.03783 > 0.00000 0.00000 0.00000 0.00000 > filter offset: 0.023514 0.023034 0.023029 0.023167 > 0.000000 0.000000 0.000000 0.000000 > delay 0.03783, dispersion 0.00012 > offset 0.023167 > > 7 Jan 17:49:01 ntpdate[22293]: no server suitable for synchronization found > > ( http://nmi.nl/index.php?pageId=1215&lg=nl )
A wireshark capture shows that it sends a bogu reftime ... Reference Clock Update Time: Jan 5, 2009 08:45:47,4493 UTC Originate Time Stamp: Jan 8, 2009 10:15:39,0507 UTC Receive Time Stamp: Jan 8, 2009 10:15:39,0375 UTC Transmit Time Stamp: Jan 8, 2009 10:15:39,0376 UTC The Root dispersion does not look too healthy, too... Root Dispersion: 3,9689 sec This really looks like they should have a look at their NTP server and its IRIG source. Why this server is accepted by ntpd is a miracle for me. Only chance I would see is if you have no other sources configured. Regards, Heiko _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
