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Performance analysis of the ATM shuffleout switch under arbitrary nonuniform traffic patterns

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2 Author(s)
Giacomazzi, P. ; Dipartimento di Elettronica, Politecnico di Milano, Italy ; Pattavina, A.

Shuffleout is a blocking multistage asynchronous transfer mode (ATM) switch using shortest path routing with deflection, in which output queues are connected to all the stages. This paper describes a model for the performance evaluation of the shuffleout switch under arbitrary nonuniform traffic patterns. The analytical model that has been developed computes the load distribution on each interstage link by properly taking into account the switch inlet on which the packet has been received and the switch outlet the packet is addressing. Such a model allows the computation not only of the average load per stage but also its distribution over the different links belonging to the interstage pattern for each switch input/output pair. Different classes of nonuniform traffic patterns have been identified and for each of them the traffic performance of the switch is evaluated by thus emphasizing the evaluation of the network unfairness

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Communications, IEEE Transactions on  (Volume:44 ,  Issue: 11 )