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by kevin_nisbet 1292 days ago
Well, the fun thing about network loops, is they can run for years without a problem on a switched network. It's only when you run into a learning issue that switches fall back to flooding all ports except the source port, which then allows packets to flow through the loop indefinitely.

This is why so many people footgun themselves disabling spanning tree, is it seems to work without it... until it doesn't.