Uma estrategia de roteamento OSPF adaptativo baseado em estimação de banda / An adaptive OSPF routing strategy based on bandwidth estimation

AUTOR(ES)
DATA DE PUBLICAÇÃO

2004

RESUMO

Internet increase and diversity demand "smart" tools that could make possible to routing protocols self-adapt to network current state (its topology and congestion situation). Smart tools, although, can result in great processing and communication overload. This work presents, besides a new adaptive OSPF routing strategy based on bandwidth estimations, a simulation platform able to expose results of network performance while experimenting (or not) the proposed adaptive routing strategy. The performance analysis is accomplished due to a model, developed in OPNET network simulator, that adds to a router model modules to bandwidth estimation and link cost updating. These additional modules allow OSPF protocol to take its routing decisions based on network link conditions and on desired link qualities. Network topology is represented by a graph and the traffic presented during simulation is specified by distribution functions acting in specific routers during established intervals. The possibility of configuring various traffic generation functions, acting from various network points in independent intervals, ensures certain network traffic dynamic representation. The simulation results offer an analysis of the proposed OSPF adaptive routing strategy, in comparison to the conventional OSPF routing, in terms of network performance parameters.

ASSUNTO(S)

analise de redes (planejamento) computer network internetworking (telecommunication) redes de computação - protocolos traffic telecomunicações - trafego interconexão de redes (telecomunicações) internet (redes de computação) protocols telecommunication network analysis (planning) internet (computer network)

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