01510nas a2200157   4500008004100000245009200041210006900133260001600202300001500218520088600233100002101119700001901140700002201159700002001181856015101201       2006                        eng d00aUsing the ns-2 simulation environment to implement and evaluate Bandwidth Broker models0 aUsing the ns2 simulation environment to implement and evaluate B  c3 - 5 April  a 285 - 2913 aIn this paper we present and compare four different
models of implementing a Bandwidth Broker in a DiffServ
network. We describe the relevant implementation aspects in the
well-known ns-2 simulator and present a number of experiments
that were conducted in order to verify our implementation,
analyze the performance characteristics of the various
alternatives and evaluate the usefulness of the ns-2 simulation
environment for similar purposes. We present our experiments
that aim at investigating a number of issues related to the
operation of Bandwidth Broker modules, and in particular how
the acceptance rate, the network overhead and the response time
for each Bandwidth Broker model are affected by the network
topology, the available buffers for incoming requests and the
advance time from the moment a request is submitted to the
moment the reservation should take place.
1 aBouras, Christos1 aStamos, Kostas1 aPrimpas, Dimitris1 aPappas, Ioannis  uhttps://telematics.upatras.gr/telematics/publications/using-ns-2-simulation-environment-implement-and-evaluate-bandwidth-broker-models?language=el