SMDS MULTICAST SUPPORT IN ATM NETWORKS

In this paper we show that an ATM network equipped with Connectionless Servers (which are interconnected by a CLS overlay network) can adequ ately support SMDS multicasting as well as other key SMDS features. We argue that multicast traffic is most efficiently transmitted on multi cast trees, and propose a scheme for the computation and maintenance o f such trees exploiting the underlying routing procedure. We then revi ew a number of CLS network design options and variables, namely, encap sulation, on-the-fly transmission, packet dropping and virtual topolog y. We evaluate the impact of these choices on the multicast service.