on Today we exchange our old Alcatel switches with new Mikrotik hardware. Residents of Egilolfstraße 53, 55, 57 and 59 should expect outages beginning from 6 p.m.. It should not take more than 2 hours until everything is back online.
on Tomorrow on 2026-05-25 we will exchange the Alcatel switches that we installed in 2021 in Kaiser-Wilhelm-Straße, which were already old at the time but nevertheless capable of Gigabit Ethernet, by new MikroTik devices.
There will be brief interruptions of service.
For us, the new hardware is vastly better to manage and makes our network future proof. We also hope to resolve some issues for a few of you Geislingen residents that had connectivity problems in the last weeks.
Update 2026-05-25 17:00: All work is successfully completed!
on We plan to do some maintenance in our central server room today in the evening. There may be short interruptions of service. We will inform you here once the works are done.
Update 21.00: All work is done. Our network cabinet, where all optical fibers come together, got new long rack rails. The old ones were too short and inflexible, screw nuts were hard to place. The renovation took place during ongoing operations and we only had to reconnect some cables that were in the way, which is why we could not avoid some brief connection dropouts. With the new rails in place we are ready for some more upgrades: Soon we will also exchange our old core switch. As always, we will inform you beforehand.
on On Sunday, 19th of April, the Netz-AK invites you to a 3D printing workshop. It will take place in our network lab in Fichtenweg 16 (see below for directions).
We have ordered some Raspberry Pi’s and will print suitable casings on our own.
There will be a short introduction to the basics (technology, study of materials, etc.) and afterwards we will begin to print the models, so that something will be definitely finished.
Depending on time and demand there will be the possibility to model on your own with TinkerCAD, Fusion360 or OnShape afterwards.
Update 2026-04-14: Please bring your own laptop!
We expect it to take 3-4 hours. Since the Netz-AK currently has a regular meeting each Sunday from 4 p.m., there will be the possibility to work longer on something or to (better) get to know the members of our working group and our rooms.
You can also join later.
There will be some snacks and Spezi.
This way you can get to our network lab:
what3words: endet.wenn.abkühlen
on Today, during the course of the evening, we will replace the old switches in Hechinger Straße 14. There will be an internet outage of around one hour.
Update: The new switch is purring along. Unfortunately, upgrading the uplink of your dorm to 10 Gbit/s failed on the first try. We are investigating the error cause.
on TüNet is measuring a line for us, so you will be briefly offline. Start: 10:30 a.m.
Update: Finished testing and upgrade of the connection at 12:00.
Update 15.01.2026: Unfortunately, connection quality has deteriorated again since yesterday evening, resulting in packet loss. We are working on a solution.
Update 16.01.2026 13:10: We have replaced a component. The issue should now be fixed. We will address the underlying problem with the fiber provider during the week.
Update 29.01.2026: TüNet will measure the connection again tomorrow, 30.01.2026, beginning at 8:00 am. All dormitories of the French quarters as well as Eugenstraße will be affected by a short internet outage.
on On Thursday, April 18, starting around 6:30 PM, we will finally be able to equip our dormitories in Viktor-Renner-Straße with more modern technology.
For the residents, this means they will be able to use gigabit internet in their rooms afterwards.
For us as Netz-AK the upgrade also brings us major advantages in the management of our network. The switches that were previously installed in Viktor-Renner-Straße are the very last to not support various standard features and needed to be configured very differently from the rest of our infrastructure, hindering any automation efforts.
We expect the installation to take about 3 hours, meaning you will probably have unrestricted internet access again from 9:30 PM.
Update 2024-04-23: After we were initially only able to replace the switches at Viktor-Renner-Straße 2 last Thursday, we have completed all maintenance work at 4 today. If you still have problems with your internet, please contact us individually using our contact form! This is the only way we can identify the individual problems and help you effectively, because the sources of error can be very different.
As everywhere else in our network, the maximum number of IP addresses assigned in Viktor-Renner-Straße is now basically limited to 1 per connection. However, you don’t have to buy a new router now if, for example, you have previously operated a WiFi repeater and therefore need several IP addresses. For all such connections that we could identify, we have temporarily relaxed this restriction. Let us know if we missed one.