I-D ACTION:draft-banerjea-qosmic-00.txt,.ps

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	Title		: Designing QoSMIC: A Quality of Service sensitive 
                          Multicast Internet protoCol
	Author(s)	: A. Banerjea, M. Faloutsos, R. Pankaj
	Filename	: draft-banerjea-qosmic-00.txt,.ps
	Pages		: 34
	Date		: 05-May-98
	
 We present, QoSMIC, a multicast protocol for the Internet that
supports QoS-sensitive routing, and minimizes the importance of a priori
configuration decisions (such as core selection). The protocol is
resource-efficient, robust, flexible, and scalable. In addition, our
protocol is provably loop-free.
 
Our protocol starts with a resources-saving tree (Shared Tree) and
individual receivers switch to a QoS-competitive tree (Source-Based
Tree) when necessary. In both trees, the new destination is able to
choose the most promising among several paths. An innovation is that we
use dynamic routing information without relying on a link state exchange
protocol to provide it. Our protocol limits the effect of pre-
configuration decisions drastically, by separating the management from
the data transfer functions; administrative routers are not necessarily
part of the tree. This separation increases the robustness, and
flexibility of the protocol. Furthermore, QoSMIC is able to adapt
dynamically to the conditions of the network.
 
The QoSMIC protocol introduces several new ideas that make it more
flexible than other protocols proposed to date. In fact, many of the
other protocols, (such as YAM, PIM-SM, BGMP, CBT) can be seen as special
cases of QoSMIC. The goal of this document is to present the motivation
behind, and the design of QoSMIC, and to provide both analytical and
experimental results to support our claims.
 
 
NOTE: The text version of the draft is missing several figures, that
facilitate the understanding of the work.  For this, the authors suggest
the postscript version.


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