TY - CONF T1 - Performance Analysis of a Managed Bandwidth Service for ATM Networks T2 - Communication Networks and Distributed Systems Modeling and Simulation Conference (CNDS 2002), Riverwalk North, San Antonio, Texas, USA Y1 - 2002 A1 - Christos Bouras A1 - Vaggelis Kapoulas A1 - Alexandros Panagopoulos A1 - Afroditi Sevasti A1 - Chrysa Chantzi A1 - Ioanna Sampraku AB - In this paper we are considering methods to improve the performance of a bandwidth control scheme (i.e. Managed Bandwidth Service) for an ATM network infrastructure (with application to the Greek Research and Technology Network - GRNET). These methods try to increase the efficiency of the system and the utilisation of the available bandwidth. More specifically, we consider: a) a bandwidth-resizing algorithm for virtual paths in order to (constantly) keep the allocated bandwidth very close to the bandwidth actually used, b) a simple method to estimate the effective bandwidth for VBR paths that can be used in call admission, and c) a semi-offline call admission scheme where requests are gathered and considered for acceptance in regular intervals (with a further improvement, of allowing connections to be allocated a little before or after the time initially requested). All these methods were tested in a simulation setting (with the ATM-TN simulator), and results indicate that they lead to an increased number of accepted requests and better network utilisation. JF - Communication Networks and Distributed Systems Modeling and Simulation Conference (CNDS 2002), Riverwalk North, San Antonio, Texas, USA ER -