Análise de desempenho das tecnologias de virtualização de rede da plataforma OpenStack

Abstract

VLANs (Virtual Local Area Network) aim to provide the network traffic isolation between users pertain to the same physical architecture. In recent years, computing has emerged as one of the greatest information technology improvement. Which has revolutionized the computing resource management in business and academic environments. The popularity of cloud computing has made to appeared the need to increase support for multiple hosts belonging a logically independent networks, promoting the advent of networks virtualization. Several studies have been carried out with cloud computing platforms, aiming to improve network virtualization existing techniques, pointing out the best solution to each proposed environment. In this scenario, the OpenStack became propulsor, increasing new adepts by its open essence and currently be considered one of largest cloud orchestrators. The OpenStack enables the implantation of flexible models of network, answering the needs of big data centers that use superposition techniques to provide scalable structures. With the purpose of to measure the networks virtualization technologies performance supported by OpenStack platform, this paper aims to compare the networks virtualization performance utilizing the VXLAN and GRE tunneling protocols, with Linux Bridge and Open vSwitch. To evaluate performance and scalability of cloud infrastructure, were analyzed metrics as throughput, packets loss, latency and jitter for connection fluxes TCP and UDP by using the traffic generation and measuring tool Uperf. With the experiments was possible to verify that scenarios using Open vSwitch with VXLAN obtained larger throughput taxes between diffents compute nodes, exposing this way bigger packets loss taxes. However, Linux Bridge with VXLAN demonstrates smaller latency and jitter taxes in the most of results.