Energy efficiency in optical networks

This paper proposes a new framework, specifically designed for introducing and suitably managing/using green metrics in ASON/GMPLS Optical Transport Networks (OTNs). The core element of such a framework is the Green Abstraction Layer (GAL), a standard interface proposed by the ECONET project, which has been specifically designed to give a simplified a common view of power management primitives available in next-generation green network equipment. The Green Abstraction Layer allows to extract available power management settings, and to set the desired configuration into a device, hiding heterogeneous and complex details of device internal physical architecture of nodes.