Where STP or especially RSTP is involved, as it should be in a redundant layered network structure AND constant loop problems are disabling the network with broadcast storms; A laptop running a terminal program with the switch console up in a locked...
Wildpackets Omnipeek may be of help, It's Layer 2 data collection is good and really meant for wireless but it handles NIC IF's and it categorizes all traffic on your ethernet network, of course depending on how you tie in. It reports to html, xml, t...