[c-nsp] Cisco 3020 blade switches hung, HLFM errors, network meltdown?

Lincoln Dale ltd at cisco.com
Wed Mar 19 20:18:34 EDT 2008


Hi Matthew,

not a specific diagnosis to your problem, but i think this is a bit of a 
warning here:

matthew zeier wrote:
> Felt like a broadcast storm or even a spanning-tree loop but I'd be 
> surprised if it was the latter and the upstream switches, two 6500s, 
> didn't know how to do deal with that (heck, they deal with HP 2510s that 
> default to not running spanning-tree).
>   
if you had switches in your network NOT running STP, you've got a pretty 
good opportunitiy for "bad things<tm>" to happen.

were those switches connected with >1 link?



cheers,

lincoln.


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