Data Center TCP com Histerese em Switches P4

  • Vítor L. G. Silva UFV
  • José A. M. Nacif UFV
  • Marcos A. M. Vieira UFMG


O congestionamento de pacotes em uma rede de computadores causa perda de desempenho no sistema. Esta proposta busca melhorar o desempenho das redes de computadores em centro de dados, especialmente em cenários de congestionamento. O protocolo padrão de controle de congestionamento em centro de dados é o Data Center TCP (DCTCP). Este artigo propõe duas abordagens: i) o uso da técnica de histerese nas filas dos switches para marcar os pacotes, indicando o congestionamento; ii) o retorno de pacotes ao emissor para reduzir a taxa de envio quando houver congestionamento. As abordagens foram implementadas em linguagem P4 utilizando switches P4 programáveis e validado juntamente com o DCTCP. Os resultados mostram que ambas soluções propostas melhoram a vazão da rede.


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SILVA, Vítor L. G.; NACIF, José A. M.; VIEIRA, Marcos A. M.. Data Center TCP com Histerese em Switches P4. In: SIMPÓSIO BRASILEIRO DE REDES DE COMPUTADORES E SISTEMAS DISTRIBUÍDOS (SBRC), 39. , 2021, Uberlândia. Anais [...]. Porto Alegre: Sociedade Brasileira de Computação, 2021 . p. 182-195. ISSN 2177-9384. DOI:


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