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Time-Server

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Topical Archives

Firmware update for high-precision synchronization

Partial Maintenance
Friday 10/31/2025 12:15 PM - Friday 10/31/2025 02:00 PM

A firmware update for the high-precision synchronization (HPS) module is being carried out on the RWTH time servers. Provided that all time servers mentioned in https://help.itc.rwth-aachen.de/service/uvjppv3cuan8/ are configured as described there, there will be no disruption.

31.10.2025 12:19

Firmware Update

Maintenance
Saturday 10/25/2025 08:15 PM - Saturday 10/25/2025 09:15 PM

The RWTH's time servers receive a firmware update. Due to the redundant provision of the NTP service, there is no impairment (assuming the use of the three time servers).
https://help.itc.rwth-aachen.de/service/uvjppv3cuan8/

25.10.2025 20:14

ein Zeitserver gestört

Partial Outage
Wednesday 10/01/2025 11:05 AM - Wednesday 10/01/2025 04:00 PM

All three time servers were updated to the latest version. In addition, an update of the receiver was initiated at ntp1.rwth-aachen.de, but this was unsuccessful due to incompatibility between the software image and the module update (according to the manufacturer). It is precisely this server that is now experiencing a disruption to the time service. As we offer three time servers, the service is not affected if configured accordingly.

01.10.2025 14:25
Updates

The problem has been solved and the status changed from Stratum 12 to the regular Stratum 1.

01.10.2025 15:59

Firmware Update

Maintenance
Thursday 09/25/2025 04:00 PM - Thursday 09/25/2025 05:00 PM

The RWTH's time servers receive a firmware update. Due to the redundant provision of the NTP service, there is no impairment (assuming the use of the three time servers). https:
help.itc.rwth-aachen.de/service/uvjppv3cuan8/

25.09.2025 15:39

Firmware Update

Maintenance
Tuesday 08/19/2025 03:15 PM - Tuesday 08/19/2025 04:15 PM

The RWTH's time servers receive a firmware update. Due to the redundant provision of the NTP service, there is no impairment (assuming the use of the three time servers). https:
help.itc.rwth-aachen.de/service/uvjppv3cuan8/

19.08.2025 14:46

Firmware Update für die Hochpräzise Synchronisation

Maintenance
Wednesday 07/23/2025 11:00 AM - Wednesday 07/23/2025 12:00 PM

Bei den Zeitserver der RWTH wird ein Firmware Update für das Modul zur Hochpräzisen Synchronisation (HPS) durchgeführt. Dies betrifft nicht (!) den redundant bereitgestellten NTP-Dienst und es erfolgt somit keine Beeinträchtigung (die Verwendung der drei Zeit-Server vorausgesetzt). https:
help.itc.rwth-aachen.de/service/uvjppv3cuan8/

15.07.2025 10:31

Routing über neue XWiN-Router

Maintenance
Tuesday 06/10/2025 09:00 PM - Tuesday 06/10/2025 10:13 PM

During this period, the routing of the previous XWiN routers (Nexus 7700) will be switched to the new XWiN routers (Catalyst 9600). These routers are essential for RWTH's network connection. This changeover also requires the migration of the DFN connection, which is switched redundantly to Frankfurt and Hannover, and the RWTH firewall to the new systems.
There will be complete or partial outages of the external connection during the maintenance window. All RWTH services (e.g. VPN, email, RWTHonline, RWTHmoodle) will not be available during this period. The accessibility of services within the RWTH network will be temporarily unavailable due to limited DNS functionality.

07.05.2025 12:47
Updates

Der Uplink nach Frankfurt wurde erfolgreich auf das neue System geschwenkt.

10.06.2025 21:07

Umbau des Uplinks nach Hannover beginnt.

10.06.2025 21:36

Uplink nach Hannover auf das neue System umgezogen.

10.06.2025 21:45

BGP v4/v6 nach Frankfurt und Hannover sind nun über die neue Routern funktional.

10.06.2025 21:57

Es stehen noch ein paar kleinere Nacharbeiten an.

10.06.2025 22:03

Wartung ist abgeschlossen. Der Datenverkehr läuft nun vollständig über die neuen Router!

10.06.2025 22:12

Problematik mit der Anbindung zur Physik identifiziert, Lösung erfolgt morgen früh.

10.06.2025 23:50

Firmware Update

Maintenance
Wednesday 06/04/2025 04:00 PM - Wednesday 06/04/2025 04:45 PM

The RWTH's time servers receive a firmware update. Due to the redundant provision of the NTP service, there is no impairment (assuming the use of the three time servers). https:
help.itc.rwth-aachen.de/service/uvjppv3cuan8/

04.06.2025 15:56

Firmware Update

Maintenance
Tuesday 03/25/2025 09:00 AM - Tuesday 03/25/2025 10:30 AM

The RWTH's time servers receive a firmware update. Due to the redundant provision of the NTP service, there is no impairment (assuming the use of the three time servers). https:
help.itc.rwth-aachen.de/service/uvjppv3cuan8/

25.03.2025 08:26

Firmware Update

Maintenance
Friday 02/21/2025 10:00 AM - Friday 02/21/2025 11:00 AM

The RWTH's time servers receive a firmware update. Due to the redundant provision of the NTP service, there is no impairment (assuming the use of the three time servers). https:
help.itc.rwth-aachen.de/service/uvjppv3cuan8/

21.02.2025 10:02

Firmware Update

Maintenance
Tuesday 01/28/2025 05:15 PM - Tuesday 01/28/2025 06:30 PM

The RWTH's time servers receive a firmware update. Due to the redundant provision of the NTP service, there is no impairment (assuming the use of the three time servers). https:
help.itc.rwth-aachen.de/service/uvjppv3cuan8/

28.01.2025 17:26

Single sign-on and MFA mailfunction

Partial Outage
Wednesday 12/11/2024 08:00 AM - Wednesday 12/11/2024 09:30 AM

At the moment, single sign-on and multi-factor authentication are sporadically disrupted. We are already working on a solution and ask for your patience.

11.12.2024 08:12

Firmware Update

Maintenance
Tuesday 12/10/2024 11:00 AM - Tuesday 12/10/2024 12:00 PM

The RWTH's time servers receive a firmware update. Due to the redundant provision of the NTP service, there is no impairment (assuming the use of the three time servers). https:
help.itc.rwth-aachen.de/service/uvjppv3cuan8/

10.12.2024 10:30

Neu Zertifikate für Network Time Security (NTS

Warning
Monday 12/02/2024 03:15 PM - Monday 12/02/2024 04:00 PM

The certificates for Network Time Security (NTS) are updated on the RWTH time servers.

02.12.2024 15:15

Firmware Update

Maintenance
Tuesday 11/05/2024 02:30 PM - Tuesday 11/05/2024 03:30 PM

The RWTH's time servers receive a firmware update. Due to the redundant provision of the NTP service, there is no impairment (assuming the use of the three time servers). https:
help.itc.rwth-aachen.de/service/uvjppv3cuan8/

05.11.2024 13:48

Firmware Update

Maintenance
Friday 10/04/2024 12:30 PM - Friday 10/04/2024 01:30 PM

The RWTH's time servers receive a firmware update. Due to the redundant provision of the NTP service, there is no impairment (assuming the use of the three time servers). https:
help.itc.rwth-aachen.de/service/uvjppv3cuan8/

04.10.2024 12:07

Hosts of RWTH Aachen University partly not accessible from networks of other providers

Partial Outage
Saturday 08/24/2024 08:15 PM - Sunday 08/25/2024 09:00 PM

Due to DNS disruption, the name servers of various providers are currently not returning an IP address for hosts under *.rwth-aachen.de.
As a workaround, you can store alternative DNS servers in your connection settings, e.g. the Level3-Nameserver (4.2.2.2 and 4.2.2.1) or Comodo (8.26.56.26 und 8.20.247.20). It may also be possible to reach the RWTH VPN server, in which case please use VPN.

25.08.2024 10:34
Updates

Instructions for configuring an alternative DNS server under Windows can be found via the following links:
https:
www.ionos.de/digitalguide/server/konfiguration/windows-11-dns-aendern/
https:
www.netzwelt.de/galerie/25894-dns-einstellungen-windows-10-11-aendern.html
You can also use VPN as an alternative. If you cannot reach the VPN server, you can adjust the host file under Windows according to the following instructions. This will allow you to reach the server vpn.rwth-aachen.de. To do this, the following entry must be added:
134.130.5.231 vpn.rwth-aachen.de
https:
www.windows-faq.de/2022/10/04/windows-11-hosts-datei-bearbeiten/

25.08.2024 13:20

The hosts of RWTH Aachen University can now be reached again from outside the RWTH network.

25.08.2024 21:10

Individual users may have experienced problems even after the fault was rectified on 25 August at 9 pm. On 26.8. at 9 a.m. all follow-up work was completed, so there should be no further problems.

26.08.2024 15:25

Firmware Update

Maintenance
Thursday 08/22/2024 11:00 AM - Thursday 08/22/2024 12:00 PM

Die Zeitserver der RWTH erfahren ein Firmware Update. Durch die redundante Bereitstellung des NTP-Dienstes, erfolgt keine Beeinträchtigung (die Verwendung der drei Zeit-Server vorausgesetzt). https:
help.itc.rwth-aachen.de/service/uvjppv3cuan8/

22.08.2024 10:02

Zertifikatsupdate

Maintenance
Wednesday 08/07/2024 10:30 AM - Wednesday 08/07/2024 12:30 PM

The certificate used for Network Time Security (NTS, 4460/tcp, RFC 8915) on the RWTH time servers (https:
help.itc.rwth-aachen.de/service/uvjppv3cuan8/) is updated. Due to the redundancy, there is no interruption here. Also, the Network Time Protocol (NTP, 123/udp) itself and its service on our time servers are not involved.

29.07.2024 18:23

Firmware Update

Maintenance
Sunday 07/14/2024 04:40 PM - Sunday 07/14/2024 05:40 PM

Die Zeitserver der RWTH erfahren ein Firmware Update. Durch die redundante Bereitstellung des NTP-Dienstes, erfolgt keine Beeinträchtigung (die Verwendung der drei Zeit-Server vorausgesetzt). https:
help.itc.rwth-aachen.de/service/uvjppv3cuan8/

14.07.2024 16:37

Firmware Update

Maintenance
Friday 07/05/2024 04:30 PM - Friday 07/05/2024 05:30 PM

Die Zeitserver der RWTH erfahren ein Firmware Update. Durch die redundante Bereitstellung des NTP-Dienstes, erfolgt keine Beeinträchtigung (die Verwendung der drei Zeit-Server vorausgesetzt). https:
help.itc.rwth-aachen.de/service/uvjppv3cuan8/

05.07.2024 16:31

Firmware Update

Maintenance
Tuesday 04/16/2024 11:00 AM - Tuesday 04/16/2024 12:00 PM

Die Zeitserver der RWTH erfahren ein Firmware Update. Durch die redundante Bereitstellung des NTP-Dienstes, erfolgt keine Beeinträchtigung (die Verwendung der drei Zeit-Server vorausgesetzt). https:
help.itc.rwth-aachen.de/service/uvjppv3cuan8/

16.04.2024 09:50

keine Konnektivität via IPv6

Partial Outage
Friday 03/22/2024 10:15 AM - Friday 03/22/2024 10:36 AM

Derzeit sind die Zeitserver der RWTH nur via IPv4 erreichbar.

22.03.2024 10:24
Updates

Erreichabrkeit via IPv6 wurde wieder hergestellt

22.03.2024 10:36

Firmware Update

Maintenance
Wednesday 02/21/2024 09:00 AM - Wednesday 02/21/2024 10:00 AM

Die Zeitserver der RWTH erfahren ein Firmware Update. Durch die redundante Bereitstellung des NTP-Dienstes, erfolgt keine Beeinträchtigung (die Verwendung der drei Zeit-Server vorausgesetzt). https:
help.itc.rwth-aachen.de/service/uvjppv3cuan8/

21.02.2024 08:15

Firmware Update

Maintenance
Tuesday 01/23/2024 09:00 AM - Tuesday 01/23/2024 10:00 AM

Die Zeitserver der RWTH erfahren ein Firmware Update. Durch die redundante Bereitstellung des NTP-Dienstes, erfolgt keine Beeinträchtigung (die Verwendung der drei Zeit-Server vorausgesetzt). https:
help.itc.rwth-aachen.de/service/uvjppv3cuan8/

23.01.2024 08:26

derzeit erhöhter offset bei ntp1.rwth-aachen.de

Notice
Thursday 12/14/2023 08:45 AM - Thursday 12/14/2023 05:10 PM

Der Zeitserver ntp1.rwth-aachen.de hat derzeit ein erhöhtes offset (-0.032302) im Vergleich zu den anderen Servern (ntp2: -0.000038 und ntp3: -0.000069).
Unabhängig von der Anzahl konfigurierter Zeitquellen (wir empfehlen alle drei RWTH Zeitserver) ist der Dienst hierdurch aber nicht beeinträchtigt.

14.12.2023 08:58
Updates

Es wird nun wieder ein akzeptabler offfset geliefert

14.12.2023 17:10

Firmware Update

Maintenance
Monday 12/04/2023 09:00 AM - Monday 12/04/2023 10:30 AM

Die Zeitserver der RWTH erfahren ein Firmware Update. Durch die redundante Bereitstellung des NTP-Dienstes, erfolgt keine Beeinträchtigung (die Verwendung der drei Zeit-Server vorausgesetzt). https:
help.itc.rwth-aachen.de/service/uvjppv3cuan8/

04.12.2023 07:34