A novel dynamic resource adjustment architecture for virtual tenant networks in SDN

Abstract This work proposes a novel dynamic resource adjustment architecture that includes a routing planning mechanism and a bandwidth resource planning mechanism for a virtual tenant network (VTN) with software-defined networking (SDN). The routing planning mechanism helps to assign the routing paths in a physical network to solve the problem of their uneven distribution, with the ultimate goal of improving the utilization of the network routing. The bandwidth resource planning mechanism helps to manage the tenant demand for bandwidth resources to solve the problem of an excessive bandwidth requirement and thereby to improve the utilization of network bandwidth resources. The proposed architecture helps not only to plan routing paths in a physical network to satisfy a VTN user request but also to guarantee bandwidth usage based on overall network conditions. Analytical results indicate that the proposed routing planning mechanism increases the efficiency of routing assignment and that the proposed bandwidth resource scheduling increases bandwidth utilization by 10.92%.

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