A Virtual Network Reconfiguration Algorithm Oriented to Energy Consumption

In the process of adopting network virtualization method to solve the network ossification problem, reconfiguration can effectively improve the acceptance ratio of virtual network requests and the resource utilization of substrate network. Energy consumption as an important evaluation factors, and combined with a reconfiguration algorithm, this paper propose energy-aware reconfiguration algorithm. The target physical nodes are chosen on the constraint of the minimum energy consumption, after then, the virtual node will be migrated to the target physical node, and then the virtual links that need be migrated will be remapped to the physical links by shortest path algorithm. This method can effectively improve the virtual network request acceptance ratio and reduce the energy consumption of the substrate network after reconfiguration. The results of simulation verify the effectiveness of this algorithm.