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Bandwidth demands resulting from generated traffics by emerging applications, when aggregated at the edge of the networks for transport over core networks can only be met with high-capacity WDM circuit switched optical networks. An efficient end-to-end delivery of packet streams in terms of network control, operation and management is one of the key(More)
GEYSERS aims at defining an end-to-end network architecture that offers a novel planning, provisioning and operational framework for optical network and IT infrastructure providers and operators. In this framework, physical infrastructure resources (network and IT) are dynamically partitioned to virtual resources and then composed into a Virtual(More)
Application service providers (ASPs) now develop, deploy, and maintain complex computing platforms within multiple cloud infrastructures to improve resilience, responsiveness and elasticity of their applications. On the other hand, complex applications have little control and visibility over network resources, and need to use low-level hacks to extract(More)
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(More)
Future Internet services are characterized by global delivery of high-performance network-based applications over a high-capacity dynamic optical network. As these types of applications evolve, it is not feasible or scalable for network operators to setup and configure dedicated network for each Internet application type or category. Therefore, a key(More)
In this paper, a novel Infrastructure as a Service architecture for future Internet enabled by optical network virtualization is proposed. Central to this architecture is a novel virtual optical network (VON) composition mechanism capable of taking physical layer impairments (PLIs) into account. The impact of PLIs on VON composition is investigated based on(More)
G 2 MPLS is a Network Control Plane (NCP) architecture that implements the concept of Grid Network Services (GNS). In the Phosphorus framework, GNS allows the provisioning of network and Grid resources in a single-step through a set of seamlessly integrated procedures. The implementation of GNS poses a number of requirements on the Control Planes of the(More)
Software-Defined Networking and Network Functions Virtualization have initiated a new landscape within the telecom market landscape. Initial proof-of-concept prototypes for NFV-enabled solutions are being developed at the same time SDN models are identified as the futures solutions within the telecom realm. In this article, we provide a brief overview of(More)