Lightning:The story of how eduroam went down for a day at Ulm University and the problem's peculiar resolution
From 34C3_Wiki
| Description | A few weeks ago on an early monday morning it was reluctantly determined by us and our staff that eduroam somehow stopped working at our university in Ulm over the weekend.
Quickly we found that none of the usual solutions would work this time as every service on its own was working just perfectly. Be part of an astonishing journey into the depth of the network of Ulm University, the protocol spanning tree and malconfiguration and see with your own eyes how an unplugged network device caused eduroam and our public wifi named welcome to break down and learn how to avoid these circumstances in your own network as they can be reproduced in many scenarios. |
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| Slides | https://drive.google.com/open?id=1Lkzm6g7Kq_fgqB3LX9dSs4qLW2ctjs-P |
| Tags | eduroam, networking, spanning-tree, packet reflection |
| Person organizing | User:Johannes Deger |
| Contact: | johannes.deger@uni-ulm.de |
| Language | en - English |
| Duration | 5 |
| Desired session | Day 2 |
| Desired timeframe | middle |
Video starts at https://www.youtube.com/watch?v=67rh6jB2UVQ#t=1h08m48s
