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Avaliação de Desempenho de Algoritmos de Escalonamento na Arquitetura de Serviços Diferenciados

Tito Lívio CastroFernando Luís Dotti

This paper compares the performance of various packet scheduling algorithms applicable to DiffServ architecture. Three comprehensive simulation expertiments using NS-2 simulation tool were carried out. The first experiment analyzes the impact of various traffic parameters on Expedited Forward flows. The second evaluates the behavior of Assured Forward flows when traffic parameters of lower priority flows are changed. Finally, the last experimentation considers the results achieved in the previous experiments and analyzes a complete scenario with Expedited Forward, Assured Forward and Best Effort flows, drawing the influence of several traffic parameters to the various service classes. In all these experiments, a set of packet scheduling algorithms were considered for the implementation of the PHB (Per Hop Behaviors).

http://www.lbd.dcc.ufmg.br:8080/colecoes/sbrc/2004/013.pdf

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