Abstract-In this paper we propose energy efficient design and operation of infrastructures incorporating integrated optical network and IT resources. For the first time we quantify significant energy savings of a complete solution jointly optimizing the allocation and provisioning of both network and IT resources. Our approach involves virtualization of the infrastructure resources and it is proposed and developed in the framework of the European project GEYSERS -Generalised Architecture for Dynamic Infrastructure Services.

No abstract

The foundations for the definition of the network of the future should be based on a correct user and community characterizations to minimize the fragmentation of the experiences during the global interactions with information communication infrastructures. This paper describes some of the complex objectives and main challenges that telecommunication solution and services have to deal with in order to respect both specific requirements of global user interactions, habits and personalization, and framework requirements about green environments.

Abstract. Over the years, the Internet has become a central tool for society. The extent of its growth and usage raises critical issues associated with its design principles that need to be addressed before it reaches its limits. Many emerging applications have increasing requirements in terms of bandwidth, QoS and manageability. Moreover, applications such as Cloud computing and 3D-video streaming require optimization and combined provisioning of different infrastructure resources and services that include both network and IT resources. Demands become more and more sporadic and variable, making dynamic provisioning highly needed. As a huge energy consumer, the Internet also needs to be energyconscious. Applications critical for society and business (e.g., health, finance) or for real-time communication demand a highly reliable, robust and secure Internet. Finally, the future Internet needs to support sustainable business models, in order to drive innovation, competition, and research. Combining optical network technology with Cloud technology is key to addressing the future Internet/Cloud challenges. In this con- text, we propose an integrated approach: realizing the convergence of the IT-and optical-network-provisioning models will help bring revenues to all the actors involved in the value chain. Premium advanced network and IT managed services integrated with the vanilla Internet will ensure a sustainable future Internet/Cloud enabling demanding and ubiquitous applications to coexist.

Energy efficiency is well-known to have recently become one of the most important aspects for both today's and tomorrow's telecommunications infrastructures. To curb their energy requirements, next-generation hardware platforms of network devices are expected to include advanced power management capabilities, which may allow a dynamic trade-off between power consumption and network performance. At the same time, network protocols are going to evolve in order to carry energy-aware information, and to add them to classical performance indexes in network optimisation strategies. However, the question of how to map energy-aware indexes, often arising from low-level local hardware details, and the ones related to network performance is still an open issue. Starting from these considerations, we propose the Green Abstraction Layer (GAL), a device internal interface that provides a standard way of accessing and organising energy-aware information from the low-level hardware components to control processes. The GAL is specifically designed to hide the heterogeneous hardware implementation details, and to provide a simple, hierarchical, and common view of underlying power management capabilities to network control processes