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A new metrics towards comprehensive performance evaluation of ATM networks

The design of a practical ATM network continues to be challenging, owing to the difficulty in the accurate estimation of user traffic and the wide range of user's quality of service requirements. There is little consensus on the characterization of network performance, users' satisfaction, and the efficiency of network usage. This paper develops a single metric for network performance that captures the efficiency of resources usage, from the network point of view, and the users' satisfaction, from the user point of view. The metric is evaluated for a 19-node ATM network, organized through a three-tiered hierarchy, and subject to asymmetric traffic.