to time the switch will see a frame where the destination MAC address
is associated with the same port on which it was received. The switch
assumes the frame has reached its intended destination and drops the
frame, not wanting to create multiple copies of the same frame.
broadcast storms, unrecoverable application errors, and corruption of
the MAC address table in bridges or switches.
one active path exists between any two points within a broadcast
domain. The protocol is enabled by default on Catalyst switches; how-
ever, it is not enabled by default on Cisco routers unless bridging has
been configured. The IEEE, DEC, and IBM implementations are
unique in design and are not compatible with one another.