SDN-based architecture for providing quality of service to high-performance distributed applications,International Journal of Network Management

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SDN-based architecture for providing quality of service to high-performance distributed applications
International Journal of Network Management ( IF 1.5 ) Pub Date : 2019-06-21 , DOI: 10.1002/nem.2078
Alexandre T. Oliveira ₁ , Bruno José C. A. Martins ₁ , Marcelo F. Moreno ₁ , Antônio Tadeu A. Gomes ₂ , Artur Ziviani ₂ , Alex Borges Vieira ₁

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The specification of quality of service (QoS) requirements in most of the existing networks is still challenging. In part, traditional network environments are limited by their high administrative cost, although software-defined networks (SDNs), a newer network paradigm, simplify the management of the whole network infrastructure. In fact, SDN provides a simple way to effectively develop QoS provisioning mechanisms. In this sense, we explore the SDN model and its flexibility to develop a QoS provisioning architecture. Through the use of our new architecture, network operators are able to specify QoS levels in a simple way. Each individual data flow can be addressed, and the architecture we propose also negotiates the QoS requirements between the network controller and applications. On the other hand, the network controller continuously monitors the network environment. Then, it allocates network elements resources and prioritizes traffic, adjusting the network performance. We evaluate the feasibility of our QoS provisioning mechanism by presenting three experimental setups under realistic scenarios. For example, for a given scenario where we evaluate file transfers, our results indicate that the additional SDN modules present negligible overhead. Moreover, for a given setup, we observe a reduction of up to 82% in the file transfer times.

中文翻译：

用于为高性能分布式应用程序提供服务质量的基于 SDN 的架构

大多数现有网络中的服务质量 (QoS) 要求规范仍然具有挑战性。在某种程度上，传统网络环境受限于其高昂的管理成本，尽管软件定义网络 (SDN) 是一种较新的网络范式，简化了整个网络基础设施的管理。事实上，SDN 提供了一种简单的方法来有效地开发 QoS 提供机制。在这个意义上，我们探索了 SDN 模型及其开发 QoS 供应架构的灵活性。通过使用我们的新架构，网络运营商能够以简单的方式指定 QoS 级别。每个单独的数据流都可以处理，我们提出的架构还协商网络控制器和应用程序之间的 QoS 要求。另一方面，网络控制器持续监控网络环境。然后，它分配网元资源和流量优先级，调整网络性能。我们通过在现实场景下展示三个实验设置来评估我们的 QoS 配置机制的可行性。例如，对于我们评估文件传输的给定场景，我们的结果表明额外的 SDN 模块的开销可以忽略不计。此外，对于给定的设置，我们观察到文件传输时间减少了 82%。对于我们评估文件传输的给定场景，我们的结果表明额外的 SDN 模块带来的开销可以忽略不计。此外，对于给定的设置，我们观察到文件传输时间减少了 82%。对于我们评估文件传输的给定场景，我们的结果表明额外的 SDN 模块带来的开销可以忽略不计。此外，对于给定的设置，我们观察到文件传输时间减少了 82%。

更新日期：2019-06-21

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