AODV: Path Setup
	n eventually, RREQ will reach a node with route to destination – problem: what if route is old? – solution: source includes destination sequence number in RREQ to indicate desired “freshness” – if node’s destination sequence number is less than the one in RREQ, keep forwarding RREQ to neighbors n if acceptable route information, unicast RREP back to neighbor who sent out RREQ, which follows reverse path back to source, setting up route along the path n nodes that are not on reverse path will timeout and delete temporary information (timeout interval chosen appropriately, make sure that there is enough time for route to be discovered….) n if node receives multiple RREP, propagate first, and additional ones only if they indicate better path (using DSDV criteria): – greater destination sequence number (“fresher” route) – same destination sequence number with smaller hopcount