DENOG17

Every now and then, I see people do some pretty odd things when trying to troubleshoot network issues. Like using curl to test a domain name right after DNS resolution failed. Or jumping into a random GitHub issue because it mentions IPv6—so it must be the same problem. Or offering troubleshooting advice that's fine in general, but has nothing to do with the actual issue.

I've run a few troubleshooting trainings before, and honestly… I didn’t love them. They were always aimed at experienced network folks, but I kept finding myself going back to explain the basics.

So this time, let’s flip the script: I’ll walk through the fundamentals first, show how things connect, and then walk you through how I solved some real-world problems I’ve seen in the wild.

Expect plenty of live demos (mostly Linux-based), and if the group size allows, you’ll get your hands dirty in some labs too.

Oh, and fair warning: I’m going to say the word “documentation” a lot. You’ve been warned.