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, With growing users' needs, networking models should evolve not only in terms of service provisioning but in the capability to improve energy efficiency and mitigate environmental impact by reducing CO 2 emissions. Acceptable solutions to this challenge are required in order to provide the green support to the network. Throughout this thesis, we have addressed some of the most challenging issues regarding the design of energy-aware routing solutions by reducing the number of active network elements and implementing the adaptive link rate in SDN. It should be highlighted that all the contributions of this research stand as novel and original proposals which were designed from scratch. This thesis is focused on green routing and has proposed a few methods for reducing the environmental impact of wide-range core networks. We here briefly describe the main outcomes of this research in order to assess the fulfillment of research objectives
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