NTP Service of Technische Hochschule Augsburg

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.

Access

Access policy on/off campus:
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.

Hierarchy level:
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.

Attributes

Geographic location:
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

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.

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.