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9_ODMRP - ON DEMAND MULTICAST ROUTING PROTOCOL(ODMRP CSE...

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Unformatted text preview: ON DEMAND MULTICAST ROUTING PROTOCOL (ODMRP ) CSE 6590 Fall 2010 F e b r u a r y 1 4 , 2 1 2 TYPES OF MULTICAST ROUTING IN MANETS Tree-based One path between a source-receiver pair AMRoute, AMRIS, MAODV Mesh-based Multiple paths between a source-receiver pair ODMRP, CAMP Hybrid Zone Routing Protocol (ZRP) 2 TYPICAL MULTICAST ROUTING PROTOCOLS AMRIS: Ad Hoc Multicast Routing Protocol Utilizing Increasing ID Numbers National University of Singapore Georgia Institute of Technology November 1998 [draft] ODMRP: On-demand Multicasting Routing Protocol University of California at Los Angeles January 2000 [draft] 3 WHY COMPARE THEM? AMRIS ODMRP Big difference Topology Shared (Core-based) Tree Mesh of Nodes Main Similarity Mobility support Yes, based on MANET Driven mode On-demand, do not store whole network topology Advantages simple topology low overheads mobility robustness Disadvantages sensitive to mobility (low delivery ratio) complex topology high overheads 4 ODMRP Multicast Messages: JOIN-QUERY (J-Q); JOIN-REPLY (J-R); Similar to Route Request and Route Reply in AODV and DSR 5 ODMRP: SENDER ACTIONS Sender actions: Downstream Generate J-Q message; Broadcast J-Q ; Upstream Receive J-R (include the path info); 6 ODMRP: INTERMEDIATE NODES...
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9_ODMRP - ON DEMAND MULTICAST ROUTING PROTOCOL(ODMRP CSE...

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