Arquitetura de Provisão de Qualidade de Serviço para Aplicações Distribuídas de Alto Desempenho em Redes Definidas por Software

• Alexandre T. Oliveira
• Bruno José C. A. Martins
• Antõnio Tadeu A. Gomes
• Artur Ziviani
• Marcelo F. Moreno
• Alex B. Vieira

Resumo

The specification of quality of service (QoS) requirements such as delay, jitter and throughput in traditional data networks is limited by the high administrative cost of these environments. On the other hand, the softwaredefined networks (SDN) paradigm, with its global vision and its higher level of programmability, simplifies the management of the whole infrastructure of the data networks. In this sense, SDN can provide simple and effective QoS provisioning mechanisms in these networks in order to meet the needed requirements. Thus, in this paper, we propose a QoS provision architecture exploiting the capabilities of the SDN model. The approach consists in providing software components that allow the specification of classes of service, in addition to negotiating the QoS requirements between applications and the network controller. In this platform, the SDN controller monitors the environment and adjusts the network through resource reservation and traffic prioritization. A proof-of-concept has been deployed and our results show that the additional routines present low overhead, whereas a reduction of up to 47% in transfer times is observed.