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5 Ad hoc On Demand Vector Routing (AODV) RFC 3561 ï§ ï§ On demand â Only nodes on an active paths maintain routing information and exchange routing tables. A node needs to discover and maintain a route to another node if : ïµ ïµ ï§ AODV makes use of sequence numbers created by the destination: ïµ ïµ ï§ the two nodes need to communicate. itâs an intermediate forwarding station that maintains connectivity between two other nodes. ïµ To maintain the most recent information between nodes. To prevent routing loops. All routing packets carry these sequence numbers. AODV maintains timer-based states in each node ïµ a routing table entry is âexpiredâ if not used recently. Internet Networking
