On the performance of TCP over optical burst switched networks with different QoS classes

In this paper we investigate the end-to-end performance of an optical burst switched (OBS) network that adopts a core router architecture with no fiber delay lines and limited set of wavelength converters. In particular, by evaluating both the node and a reference network performance in terms of burst blocking probability we want to determine the end-to-end performance when a transport protocol like TCP is employed. Core node analysis is employed to identify the blocking experienced by incoming bursts, under the assumption of exponentially distributed burst interarrival times and arbitrarily distributed burst durations