Title :
Simulation and analytical approximation of ATM multistage shared buffer switch
Author :
Casoni, M. ; Raffaelli, C.
Author_Institution :
Dipt. di Elettronica Inf. e Sistemistica, Bologna Univ., Italy
Abstract :
A multistage ATM switch based on Clos interconnection of shared buffer switching elements is analyzed with the aim to develop design tools suitable for switch dimensioning in the range of ATM cell loss target. Starting from a simulation activity, which obtains the main switch performance and shows the effects of architectural and operational options, an approximated model is proposed. It is based on the discovery that statistical correlations in later stages of Clos network reduces so that it is feasible to treat different queue lengths as independent random variables to evaluate the cell loss performance of a shared buffer switching element. Approximate dimensioning of the whole switch is also performed. Results are given and verified in the range tractable by simulation for uniform and multiplexed bursty traffic
Keywords :
approximation theory; asynchronous transfer mode; buffer storage; correlation methods; digital simulation; multistage interconnection networks; packet switching; queueing theory; random processes; simulation; telecommunication switching; telecommunication traffic; ATM cell loss; ATM multistage shared buffer switch; Clos interconnection; Clos network; analytical approximation; approximate dimensioning; approximated model; cell loss performance; design tools; independent random variables; multiplexed bursty traffic; queue lengths; shared buffer switching elements; simulation; statistical correlations; switch dimensioning; switch performance; uniform bursty traffic; Analytical models; Asynchronous transfer mode; B-ISDN; Communication system traffic control; Network topology; Performance loss; Random variables; Switches; Telecommunication traffic; Traffic control;
Conference_Titel :
Global Telecommunications Conference, 1996. GLOBECOM '96. 'Communications: The Key to Global Prosperity
Conference_Location :
London
Print_ISBN :
0-7803-3336-5
DOI :
10.1109/GLOCOM.1996.587633
