Broker and Federation Based Cloud Networking Architecture for IaaS and NaaS QoS Guarantee

Today, the Cloud networking aspect is a critical factor for adopting the Cloud computing approach. The main drawback of Cloud networking consists in the lack of Quality of Service (QoS) guarantee and management in conformance with a corresponding Service Level Agreement (SLA). This paper presents a framework for resource allocation according to an end-to-end SLA established between a Cloud Service User (CSU) and several Cloud Service Providers (CSPs) in a Cloud networking environment. We focus on QoS parameters for Network as a Service (NaaS) and Infrastructure as a Service (IaaS) services. In addition, we propose algorithms for the best CSPs selection to allocate Virtual Machines (VMs) and network resources in inter-cloud broker and federation scenarios. Our objective is to minimize the cost while satisfying NaaS and IaaS QoS constraints. Moreover, we simulate our proposed Cloud networking architecture to provide videoconferencing and intensive computing applications with QoS guarantee. We observe that the broker architecture is the most interesting while ensuring QoS requirements.