SLA Renegotiation According to Traffic Demand

To access the Internet, companies define a Service Level Agreement (SLA) with Internet Service Providers (ISPs). Nevertheless, the current Internet does not assure Quality of Service (QoS), what points toward the concept of network virtualization and software defined network (SDN) to support the Future Internet. Moreover, the initial parameter defined in the SLA could be insufficient if the traffic vary, could result in a lower quality experienced by users. Within this context, this work proposes a solution for the SLA renegotiation problem in the context of resource usage variation, aiming to guarantee the QoS provided by the ISPs.