A method for loop breaking includes selecting a first port of a node, transmitting
a first packet containing a first identifier from the first port of the node, listening
for a second packet containing a second identifier for a period of time on a second
port of the node, joining the first port and the node if the second identifier
meets a first criteria with respect to the first identifier and quarantining the
first port when the second identifier meets a second criteria with respect to the
first identifier.