IEEE TRANSACTIONS ON NETWORK AND SERVICE MANAGEMENT
Abstract
Software Defined Network (SDN) has enabled consistent and programmable management in computer networks. However, the explosion of cloud services and Content Delivery Networks (CDN) – coupled with the momentum of encryption – challenges the simple per-flow management and calls for a more comprehensive approach for managing web traffic. We propose a new approach based on a “per service” management concept, which allows to identify and prioritize all traffic of important web services, while segregating others, even if they are running on the same cloud platform, or served by the same CDN. We design and evaluate AWESoME, Automatic WEb Service Manager, a novel SDN application to address the above problem. On the one hand, it leverages big data algorithms to automatically build models describing the traffic of thousands of web services. On the other hand, it uses the models to install rules in SDN switches to steer all flows related to the originating services. Using traffic traces from volunteers and operational networks, we provide extensive experimental results to show that AWESoME associates flows to the corresponding web service in real-time and with high accuracy. AWESoME introduces a negligible load on the SDN controller and installs a limited number of rules on switches, hence scaling well in realistic deployments. Finally, for easy reproducibility, we release ground truth traces and scripts implementing AWESoME core components.
