We propose a distributed approach in which an Internet Service Provider (ISP) and a Content Provider (CP) cooperate to minimize total power consumption. Our solution is distributed between the ISP and the CP to limit shared information, such as network topology and servers' load. In particular, we adopt a dual decomposition technique. We investigate the performance of the proposed solution on realistic case-studies.We compare our algorithms with a centralized model, whose aim is to minimize total power consumption. We consider different power models for devices. Results show that the distributed algorithm is close to the optimal solution, with a power efficiency loss less than 17%.
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