[d00bianista]

Yup, turning off snooping would have fixed the issue at hand but not the poor choice of relying on STP for redundancy.

I've seen this happen a few times in my life in production systems, designed by someone else. Overload a switch somehow and it goes straight in ludacris mode because of the topology. Properly configured networks suffer minor outages only in case of single device meltdowns.

[Dylan16807]

It seems like it took multiple switches melting down from bad software design to cause the problems. I originally had a line about the risk of large broadcast domains but the comments on the post claim they were actually pretty small.