Secure Network Bandwidth Provisioning for Quality of Services (QoS) Guarantees

This paper studies the problem of secure network bandwidth provisioning. Solving the problem plays a key role in the successful delivery of cloud services since secure network performance is a fundamental consideration in cloud computing design that is associated with service level agreement (SLA) An SLA is a contract agreed on between a customer and a network service provider. It defines the quality of service (QoS) that the network service provider promises to offer and a fee that the customer agrees to pay for its services. A network service provider uses a set of network resources to support cloud service applications subject to an SLA. The QoS in this paper includes percentile response time, network utilization, and vulnerability. This paper gives an approach for network bandwidth optimization or provisioning in such an environment that minimizes the total cost of network bandwidth used by a network service provider for a cloud service application while satisfying a QoS and a fee negotiated between a customer and the network service provider. We finally present resulting algorithms and demonstrate the applicability of the algorithms through simulation experiments.