Ntp
From Federal Burro of Information
linux / unix
Getting an out of date server back in line.
date; ntpdate <ntpserver> ; date;
Using step tickers.
/etc/ntp/step-tickets should have the servers from the ntpd.conf config.
Some useful commands:
david@cydonia ~ $ ntpq -c pe
remote refid st t when poll reach delay offset jitter
==============================================================================
-xen0c.10mbit.bi 64.90.182.55 2 u 844 1024 377 25.870 14.653 15.800
*mircx.com 132.163.4.102 2 u 943 1024 377 61.815 6.705 2.755
+zeus.yocum.org 131.188.3.220 2 u 961 1024 377 27.989 0.981 3.108
+69.42.52.50.scr 128.100.56.135 3 u 435 1024 377 21.985 4.444 0.425
david@cydonia ~ $ ntpq -c as
ind assID status conf reach auth condition last_event cnt
===========================================================
1 764 93a4 yes yes none outlyer reachable 10
2 765 96a4 yes yes none sys.peer reachable 10
3 766 94a4 yes yes none candidat reachable 10
4 767 94a4 yes yes none candidat reachable 10
david@cydonia ~ $
windows
- http://www.meinberg.de/english/sw/ntp.htm compiled ntp.porg for windows.
- cheat sheet: http://www.meinberg.de/download/ntp/docs/ntp_cheat_sheet.pdf
- monitoring tool: http://www.meinberg.de/english/sw/time-server-monitor.htm
Units
1 second (s) = 1000 millisecond (ms)
1 millisecond (ms) = 1000 microseconds (µs)
1 second (s) = 1000000 microseconds (µs)
See Also
- http://www.satsignal.eu/ntp/NTP-on-Windows-serial-port.html
- all about how to use GPS device as a source in ntp: http://blog.doylenet.net/?p=145
