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Design and performance of Multinet switch: a multistage ATM switch architecture with partially shared buffers

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1 Author(s)
Kim, H.S. ; Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA

A new ATM switch architecture is presented. Our proposed Multinet switch is a self-routing multistage switch with partially shared internal buffers capable of achieving 100% throughput under uniform traffic. Although it provides incoming ATM cells with multiple paths, the cell sequence is maintained throughout the switch fabric thus eliminating the out-of-order cell sequence problem. Cells contending for the same output addresses are buffered internally according to a partially shared queueing discipline. In a partially shared queueing scheme, buffers are partially shared to accommodate bursty traffic and to limit the performance degradation that may occur in a completely shared system where a small number of calls may hog the entire buffer space unfairly. Although the hardware complexity in terms of number of crosspoints is similar to that of input queueing switches, the Multinet switch has throughput and delay performance similar to output queueing switches

Published in:

Networking, IEEE/ACM Transactions on  (Volume:2 ,  Issue: 6 )