Tag: Hohenheim

Hohenheim 25th of April 2023

Avatar photoHeinrich Griesenbach on

All Hohenheimer dormitories are connected to our network through a central hub.

Until now, this hub was located at Schwerzstrasse 2.

The building is undergoing renovation and will be without power for a while.

The plan was to relocate the hub to the newly renovated Schwerzstrasse 3.

Unfortunately, the connection between the buildings was so poor that we had to move the hub to Schwerzstrasse 1, which delayed the internet interruption accordingly. We planned for 10 minutes, but it took 3 hours.

During operation, we found that the connection there works, but is also too poor for continuous use.

Therefore, we will replace the connections again at around 12 p.m. today.

To keep the interruption short, we will send two teams. We expect the interruption to last less than an hour, ideally just a few minutes.

Update 4:50pm: Thanks to qualified feedback, an unexpected new problem that occurred during the repair of the fiber optic problem was identified and fixed around 4:30 pm. I’ll quote the translated message and thank you on behalf of the Netz-AK.

Hi, we know you’re working hard to switch over to Schwerzstraße. Since we haven’t heard anything new about the switch attempt at 12:00 since this morning’s blog post, we wanted to let you know (in case it hasn’t already been done) that if everything is back to normal, our flat still has problems. Greetings

Nevertheless, we also understand messages that explain to us that the internet is important for studying.

The fiber optic problem was traced to the edge of our network and optimized soon.

Hohenheim March 24th 2023

Avatar photoHeinrich Griesenbach on
Good evening,
the maintenance work that was announced lasted from 2 PM to 6:30 PM.
The internet outage lasted longer than expected due to unexpectedly high attenuation of the fiber optic cable.
However, those moving from Schwerzstr 2 to 3 can now expect gigabit in every room.
Everything should be working everywhere again now, but if it’s not, please try restarting your router before contacting us.
Gruss
Lucas and Heinrich

Hohenheim: Fruwithstraße and Egilofstraße from 53 onwards

Avatar photoHeinrich Griesenbach on

As part of the cleanup work that the Network Working Group in Hohenheim is finally able to tackle, I plan to publish some events on our blog.

Here’s a short text explaining why we’re worried about the cabling in the mentioned dormitories, since only a few have looked at the cables in their rooms.

I’ll compare the cables from the dormitories in the Hibuka building in the French Quarter in Tuebingen, where I lived extensively. There, we had cables for the doorbell at the front door (2 wires), cable for the telephone connection TAE (6 wires), cable connection (2 wires TV, 2 wires radio), and a double network socket (two cables with 8 wires each).

Why two network cables for one room? If one cable is damaged, the other can be used as a replacement, and you don’t have to lay a new cable from the room to the basement.

The TERA cabling is much more economical. Over a single cable with 8 wires, two wires are used for TV, two for the combination of doorbell and telephone. This leaves 4 wires to establish a 100 Mbit network connection.

If one wire is damaged, the internet network access is gone.

If one wire of the network cable is damaged in the French Quarter, there will only be 100 Mbit instead of 1000 Mbit or we switch to the spare cable.

Given the fact that TERA cables are only manufactured on demand and this type of cabling seems to be very rare, I assume that the savings in installation costs compared to the risks in operation have not prevailed.

From a purely network perspective, we have only half a network cable, without any reserves in the mentioned dormitories.

Nothing will change without construction activity. But building is not within the scope of our volunteer working group.

If there is a cable, we will make the best internet access possible for you.

Even though we can’t do much at the moment, please inform us about any possibly defective network connections and other problems. If only your apartment knows about a problem, nothing will improve.

Thanks for your interest,
Heinrich from the Netz-AK (short for Netzwerk Arbeitskreis = Network Work-group)

https://en.wikipedia.org/wiki/TERA

Upgrade Schwerzstrasse 1

Avatar photoHeinrich Griesenbach on

We need to make some unplanned changes to our hardware in your basement.

We can start working from 6 PM in Hohenheim.

Your internet will be down while we work, but we’ll finish by 10 PM. After that, all rooms will be back online, and the speed will be increased to 1 GBit from the previous 100 MBit. You can check the speed by running our speedtest.

 

Hohenheim 2022-12-11

Avatar photoHeinrich Griesenbach on

On Sunday we will be doing some work in Hohenheim.

You could be offline for at max 30/45 minutes at a time, but no longer.

Please contact us, if you have problems, we’ll wait “only” one hour in Hohenheim after we finished working.

Work will be between 11am and 5 pm on Sunday 11th of December.

Update Sunday 3 pm: Egilofstrasse shoud be up and running now. If you are still offline, reboot router and if that does not help, contact us!

Egilolfstraße 45 Sept 2022

Avatar photoHeinrich Griesenbach on

Since 22.09.2022 the following rooms are offline.

Room: 201, 202, 203, 204, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229

The Netz-AK has no keys to the building and can not help you.

We did inform the Studierendenwerk.

edv@sw-tuebingen-hohenheim.de

Update 29.09.2022:
Together with the Hohenheim IT we could fix the problem, but the hardware has to be replaced soon.
We have access to the buildings again.

Update 05.10.2022:
There was a power out this night and some more ports were damaged. The hardware will be replaced soon.

Schwerzstraße 1 offline since 2022/05/27

Avatar photoHeinrich Griesenbach on

The dorm went offline Friday morning ~10 am.

The reason is probably overheating.

The StuWe-IT decided to solve the problem themself and will solve the problem on Monday or Tuesday.

Update 30.05.2022 13:13

die Störung wurde vorübergehend beseitigt und Bewohner die sich per Mail gemeldet haben entsprechend informiert.
Zu einem späteren Zeitpunkt werden zur dauerhaften Lösung vor Ort Verkabelung und Stromanschlüsse geregelt angefasst, sowie andere Geräte verbaut werden.

Update 22.09.2022 8:55

Big parts of the buildings are offline.

The case is still in the hands of the StuWe-IT, the Netz-AK has no access to the devices and can not help you.

We did inform the StuWe and wish you luck.

Chausseefeld Feb 2021

Avatar photoHeinrich Griesenbach on

Unfortunately, the buildings in Chausseefeld are offline right now.
The buildings in Chausseefeld are connected to Egilolfstraße via a radio bridge.
Here the connection seems to be interrupted. Could be a storm, snow, lightning or a defective cable.
We as the Netz-AK would like to help you, but we have no access to the radio bridge.
The IT of the Studierendenwerk seems to be active, but needs a janitor.
Janitors are not available until Monday…
Since we don’t know what exactly caused the outage, we as Netz-AK won’t claim you would be online if we were responsible, but on weekends we are the only ones who read your mails.
So take a book and feel free to complain everywhere from Monday on.

Your net-AK on saturday morning before 7 a.m.

P.S.: Two pictures showing that there was some internet for a short time (hope?) and the last 30 days were without outages.