AVALIAÇÃO DE DESEMPENHO DE FLUXOS TCP EM REDES DE SERVIÇOS DIFERENCIADOS / PERFORMANCE EVALUATION OF TCP FLOWS IN DIFFERENTIATED SERVICES NETWORKS

AUTOR(ES)
DATA DE PUBLICAÇÃO

2002

RESUMO

This work presents a Diffserv architecture study to provide QoS in the Internet. The emphasis of the study is on the performance of flows that use the TCP transport protocol. Initially, basic concepts, TCP characteristics in its different versions and the main mechanisms of traffic control are reviewed. A modeling of the Diffserv architecture, aiming at the performance evaluation, is made. The main results on performance of this architecture in the available Literature were summarized and a reference model that allowed the accomplishment of specific evaluations was proposed. This model of QoS offering for a provider is evaluated through the NS simulation program. Through several analyzed cases, comparisons performance of TCP flows are made in different classes of service, talking into account the type of TCP implementation and the mechanisms of packet forwarding.

ASSUNTO(S)

tcp protocol internet protocolo tcp quality of service differentiated services qualidade de servico servicos diferenciados internet

ACESSO AO ARTIGO

Documentos Relacionados