Route Loop Labs

Daniel333

Hey guys,

I really feel like I am lacking in the area of preventing and troubleshooting routing loops. I think I get the concepts, I just need to work though more scenarios to find the "gotchas". Anyone know where I can get some legit Q&A or scenarios to work though?

Heero

in my experience, troubleshooting route loops has just been:
1. ping
2. TTL expired in transit message
3. traceroute to see the loop
4. Look at routing table in devices, identify issue.

Identifying the issue once you know what the loop is is generally not too hard in my experience.

Routing loops are hard to create unless you are purposefully doing it, and they are normally caused by static routes or by tinkering with settings that you dont understand in a routing protocol, at least in my experience.

I don't know of anywhere that has awesome routing loop labs.