TH Augsburg
Network Services
NTP Service
Equatorial sundial of 1780, made in the city of Friedberg, Bavaria, Germany.
Now in the
local museum.
The pole bar on the hour ring is turned down in the winter
and up in the summer. The hour ring is turned up to the local elevation
on the pole height quadrant (left), according to a table listing towns
in Europe. The whole dial is turned horizontally to the right azimuth
using the built-in compass.
Duration
Our network time service and this accompanying web site
are up and running since May 1998. The first,
old servers have been
retired in May 2012 after being on 24/7 duty for 14 years.
Since January 2012 there are three other,
new servers. Hopefully
they will have an even longer operational life than the
old ones.
Service
Simple time servers are freely offered
internally (in the campus network of
Augsburg Technical University of Applied Sciences).
They are accessible externally (from the Internet)
on request only. Please see the page
Usage for details.
The Network Time Protocol NTP version 4 and the
Simple Network Time Protocol SNTP are supported
in server mode. Peering with other stratum-2
(buddy) servers is possible on request.
There is a campus broadcast service,
but no multicast service.
Alternative
As an external user, please use a geographically close
NTP Pool Time Server.
That is sufficient in most cases and easier for you.
www.ntppool.org
is a project to provide 'a public NTP time server for everyone'.
Its idea is load balancing over the most used time servers. Our
servers are pooled too,
so you will use them anyway.
so you will use them anyway.
Access
Access policy on/off campus:
internal free
(authentication key needed for broadcast client)
external PPR
(prior permission required by e-mail)
internal free
(authentication key needed for broadcast client)
external PPR
(prior permission required by e-mail)
Availability:
not guaranteed
The servers are infrequently yet sometimes off-line for maintenance and upgrade.
not guaranteed
The servers are infrequently yet sometimes off-line for maintenance and upgrade.
Hierarchy level:
stratum 2
Forced to this level because we are synchronizing with stratum-1 servers.
stratum 2
Forced to this level because we are synchronizing with stratum-1 servers.
Network addresses and NTP versions:
time1.hs-augsburg.de (141.82.25.201) v.4
time2.hs-augsburg.de (141.82.25.202) v.4
time3.hs-augsburg.de (141.82.25.203) v.4
These addresses might be changed in the future.
time1.hs-augsburg.de (141.82.25.201) v.4
time2.hs-augsburg.de (141.82.25.202) v.4
time3.hs-augsburg.de (141.82.25.203) v.4
These addresses might be changed in the future.
Attributes
Geographic location:
48 21 19 N, 10 54 12 E
(Augsburg, Germany)
This location is not likely to be changed in the future.
48 21 19 N, 10 54 12 E
(Augsburg, Germany)
This location is not likely to be changed in the future.
Hosting systems:
3 PC boxes with AMD LX800 500 MHz,
256 MB DDR RAM, 4 GB flash disk, and
100 MBit NIC. Linux 3.2.0 / NTP 4.2.6
3 PC boxes with AMD LX800 500 MHz,
256 MB DDR RAM, 4 GB flash disk, and
100 MBit NIC. Linux 3.2.0 / NTP 4.2.6
Performance
You may yourself assess the performance of our
NTP servers. Look at the actual status of server
references and display statistics diagrams of the
local clock loop and the external server connections.
Go to the NTP subnet page
or to the site map
to choose.
Liability
In no event will Technische Hochschule Augsburg be liable
for any direct, indirect or other consequential damages
resulting from the use or an interruption of this service.
See also our page on
legal information.
Information
You may choose from the menu on the left margin or below
to get more information about our NTP service and
related topics:
The structure of our NTP subnet.
How is it used? (Usage)
The NTP protocol and software.
The 'Time' as a topic.
How is it used? (Usage)
The NTP protocol and software.
The 'Time' as a topic.
For questions or comments feel free to
contact
the operator of this service, The Computing Center.
Viewing
This site is mostly accessible
by the menu on the left margin, but you may as well use
the navigation bar on top and bottom of every page or the
site map.
See also our viewing hints.