AODV: Path Discovery
	n Initiated whenever a source needs to talk to another node and does not have routing information for that node n every node maintains two separate counters: node sequence number and broadcast id (incremented for each RREQ) n broadcast RREQ to neighbors, containing these fields n neighbors either reply with RREP (if they have route to destination) or pass RREQ on to their neighbors n drop RREQ if received more than once n if RREQ is passed on, keep some information to temporarily establish a reverse path for RREP and potential establishment of path