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Avaliação de um Ambiente de Diferenciação de Serviço Proporcional em Tráfego TCP

Aline Carneiro VianaLeonardo G. de R. GuedesJosé Ferreira de RezendeOtto Carlos M. B. Duarte

The model of proportional differentiation is a predictable and controllable way of providing relative differentiation service. This model assures, to certain metrics, that higher classes will be better than lower classes, or at least won't be worse. The proporcional model was analyzed for the UDP traffic. This paper evaluates the proportional model performance for TCP traffic, which is strongly influenciated by losses and delay, due to the mechanism used for congestion avoidance. A packet forwarding environment that follows the proportional service differentiation model was implemented and evaluated. The simulation results confirm the appropriated functioning of the proportional model for TCP traffic, in terms of losses and delay for long term connections.

http://www.lbd.dcc.ufmg.br:8080/colecoes/sbrc/2001/015.pdf

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