Design and analysis of a growable multicast ATM switch

This work designs and analyzes a cost-effective growable multicast asynchronous transfer mode (ATM) switch that has a new grouping network structure. The proposed switch can easily be enlarged by using more stages, since both cell routing and contention resolution are designed to distribute over the switch elements. Experimental results indicate that, by allowing valid cells to enter grouping networks from two directions (the west and north sides), the modular ATM switch proposed herein not only meets the ATM performance requirements for both unicasting and multicasting but also uses fewer switch elements and has a shorter cell delay than the ATM switch