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Implementation and evaluation of the KOM RSVP engine

We describe implementation aspects and performance results of an innovative and publicly available RSVP implementation. Much debate exists about the applicability of RSVP as a signalling protocol in the Internet, particularly for a large number of unicast flows. While there has been a significant amount of work published on the theoretical concepts of RSVP signalling and conjectures about its presumed shortcomings, rather little attention has been paid to the implementation details of the core protocol engine. With our work, in spite of being still far from a final judgement, we try to shed light on this issue by presenting certain design details of a new implementation and a study about its performance. One particular result is given by the observation that a relatively cheap router based on PC hardware can sustain the signalling for more than 50,000 unicast flows.