Differences between version 12 and predecessor to the previous major change of NTP.
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| Newer page: | version 12 | Last edited on Friday, April 2, 2004 2:31:12 pm | by FrankLuithle | Revert |
| Older page: | version 1 | Last edited on Tuesday, May 6, 2003 10:08:22 pm | by JohnMcPherson | Revert |
@@ -4,13 +4,64 @@
Machines that are synchronised with an atomic clock or [GPS] are stratum 1. Machines that synchronise to these machines are stratum 2, and so on.
Normally stratum 1 machines aren't available for public connections.
-Here are some
ntp servers in NewZealand that
you can
synchronise against
:
-# truechimer
.waikato
.ac.nz (stratum 2?
)
-#
ntp.massey.ac.nz (stratum 2
)
-and others
you can find
on pages such as http://www.eecis.udel.edu/~mills/ntp/clock2a.html.
+Have a look at a the following page for a list of the stratum 1 time servers http://www.eecis.udel.edu/~mills/
ntp/clock1a.html .
+Or the following for a list of the stratum 2 time
servers, http://www.eecis.udel.edu/~mills/ntp/clock2a.html
+
+! NTP
in NewZealand
+Have a look at http://www.cosc.canterbury.ac.nz/~paul/tr-cosc.01.99.pdf for a scientific study (from 1999) of the topology of the country's main ntp servers. (A bit dated as GPS is much more widely available now).
+
+!Stratum 1 NTP servers
+
+Clear generously provides a stratum 1 NTP server for public use:
+# bigben.clix.net.nz
+However,
you really shouldn't
synchronise to a stratum one server for your small network - if everyone did that then the the server would probably need too much bandwidth. Please read http://list.waikato.ac.nz/pipermail/nznog/2001-October/003705.html. The difference in accuracy between syncing to a stratum 1 server and a lower stratum server is negligible!
+
+Some NewZealand [ISP]s have NTP servers for their customers
:
+# ntp
.maxnet.co.nz
+# ntp.iprolink.co.nz
+# ntp.iconz.co.nz
+# tk1.ihug.co.nz to tk4.ihug.co.nz
+# time.paradise.net.nz
+or you could try querying your ISP's [DNS] servers with "ntp" or "ntp1".
+
+Many of [NewZealand]'s Universities also have public time servers such as:
+* ntp.public.otago
.ac.nz (Please notify before using
)
+*
ntp.massey.ac.nz (Open Access, use DNS, changed IP recently and now hosted by two machines
)
+WaikatoUniversity no longer provides public access NTP servers, although they used to have
+* truechimer1.waikato.ac.nz
+* truechimer2.waikato.ac.nz
+* truechimer3.waikato.ac.nz
+
+If
you live in Germany (or somewhere close by) you may want to try this list:
+* time1.rrz.uni-koeln.de
+* time2.rrz.uni-koeln.de
+* time3.rrz.uni-koeln.de
+* ts-1.rz.rwth-aachen.de
+* ntp1.t-online.de
+* www1.rrz.uni-koeln.de
+* hora.cs.tu-berlin.de
+* rustime01.rus.uni-stuttgart.de
+* rzfs2.rz.tu-bs.de
+* ns1.hrz.uni-giessen.de
+* ntp2-rz.rrze.uni-erlangen.de
+* mailbox.tu-berlin.de
+* ntps1-.cs.tu-berlin.de
+* ntp0.fau.de
+* ntp1.fau.de
+* ntp2.fau.de
+* ntp3.fau.de
+* ptbtime1.ptb.de
+* ptbtime2.ptb.de
+* Another very extensive list of public German NTP servers
can be found at http://www.hullen.de/helmut/filebox/DCF77/ntpsrvr.html
+
+
+otherwise you could look for public servers on the internet
on pages such as http://www.eecis.udel.edu/~mills/ntp/clock2a.html.
Related pages:
HowToClock, [HowToTimePrecisionHOWTO], ntpd(1), ntpdate(1), hwclock(8)
+
+----
+Part of CategoryNetworking
