Green Distributed Cloud Services Provisioning in SDN-enabled Cloud Environment

Cloud computing has become a business reality that impacts technology users globally. It has become a cornerstone for emerging technologies and an enabler of the future Internet services. This has been coupled with emerging trend of adopting software-based network infrastructure. Paradigms such as Software-defined networks (SDNs) have gained more attention for large scale networks due to the flexibility and agility they offer to the network. Parallel to this emergence, the power consumption has rapidly increased. Hence, developing green and sustainable solutions has become a prime concern for the cloud providers. In this paper, a novel power aware algorithim titled 'Green Distributed Cloud Services Provisioning' to provision the tenants' cloud services requests on an SDN-enabled cloud environment is presented. The role of the cloud and SDN controllers within the considered environment is illustrated to better highlight the interactions with the underlaying infrastructure. Furthermore, a brief review of well known cloud simulators is given. The conducted simulations show that the proposed algorithm significantly reduces the power consumption while maintaining high admission rates when compared to other work from the literature. Moreover, the average number of hops needed for a tenant to reach its requested VM was shown to remain stable with the increase in network load.