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This section describes the usage and the internals of multicast routing implementation in ns. We first describe the user interface to enable multicast routingSectionsec:mcast-api, specify the multicast routing protocol to be used and the various methods and configuration parameters specific to the protocols currently supported in ns. We then describe in detail the internals and the architecture of the multicast routing implementation in nsSectionsec:mcast-internals.
The procedures and functions described in this chapter can be found in various files in the directories ~ns/tcl/mcast, ~ns/tcl/ctr-mcast; additional support routines are in ~ns/mcast_ctrl.{cc,h}, ~ns/tcl/lib/ns-lib.tcl, and ~ns/tcl/lib/ns-node.tcl.