Motivation
n Many envisioned applications for ad hoc networks require
one-to-many communication
n Multicast protocols are intended to efficiently support such
communication patterns
n Multicasting well researched in fixed networks (i.e., the
Internet), but host and router mobility cause problems
n MANET specific protocols are being proposed
Ø MAODV: multicast extensions for AODV, establishes shared tree
Ø ODMRP: new multicast protocol, based on per-source mesh
n Goal: study and compare protocols to identify possible
avenues for improvement