A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Sender Initiated Multicast (SIM)
Author(s) : V. Visoottiviseth
Filename : draft-vasaka-xcast-sim-01.txt
Pages : 26
Date : 2003-3-5
Sender Initiated Multicast (SIM) is a point-to-multipoint multicast
mechanism. SIM will not replace the existing multicast protocol, but
will be a subset of entire multicast protocol suite. Its design goals
are to gain more simplicity than the traditional IP multicast and to
gain less header-processing overhead than the Xcast protocol. It
eliminates the cost of allocating global multicast address, by
routing packets according to receiver unicast addresses attached to
packet headers. Access control can be introduced before, members of
a receiving group are explicitly specified by the sender. A group is
identified by the combination of sender's unicast address and a
multicast group address. The key feature of SIM is in its Preset
mode, which can lessen the costs of route lookups and provides cost-
efficient packet forwarding by using a SIM Forwarding Information
Base (FIB) maintained on routers. Moreover, a SIM tunnel will be
automatically created between two routers that act as multicast
branching points. Therefore, SIM can gain scalability by maintaining
FIB entries only on the branching routers.
In this document, we describe SIM including its delivery models, SIM
FIB operations, the formats, and security considerations.
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