(Depending on what you meant by or if the emphasis was on "from a single node")

There are other means also:

1- mac table flooding: spoof enough source mac addresses to overload the switch's mac-table (mac/port mapping table).

2- Not directly a switch level attack, but you can MITM traffic if by claiming to be the best HSRP router (if you use HSRP). Of course this will only affect routed traffic...

3- Depending on the network layout, some MITM may be possible using STP on a double-homed network....

Cisco has a good write-up on L2 issues:
http://www.cisco.com/en/US/netsol/ns...8014870f.shtml


Ammo