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Cloud computing is a new model of consuming and delivering IT and infrastructure resources. It enables users to obtain what they need, as they need it, from advanced applications to IT infrastructure and platform services, including virtual infrastructure, servers and storage. It can provide significant economies of scale and greater business agility, while(More)
With network virtualization, the physical infrastructure can be partitioned into multiple parallel virtual networks for sharing purposes. However, different transport technologies or quality of service (QoS) levels may impact both the requested amount of resources and the characteristics of different virtual instances that can be built on top of a single(More)
Future high-performance network-based applications are delivered over the high-capacity dynamic optical network. Each of these applications requires dedicated network service, which can be provided by the virtual optical network (VON) created by optical network virtualization. The virtualizable bandwidth variable transceiver (V-BVT) is a key enabling(More)
Nowadays, several devices supporting OpenFlow versions beyond 1.0 are available on the market. However, existent OpenFlow testbeds like OFELIA do not provide support for such devices, therefore it is hard for the research community to explore and test the newest functionalities of the protocol in realistic environments. This paper gives a short overview of(More)
Future Internet services are characterized by global delivery of heterogeneous network-based applications over high performance dynamic networks. To meet these applications needs, architectural enhancements and changes in the current Internet are essential. However, since there exists multiple stakeholders in the current Internet, it is almost impossible to(More)
Optical orthogonal frequency division multiplexing (O-OFDM) is a promising transport technology for virtualization and bandwidth sharing over high-capacity optical fibers. In this paper, we propose an IP-over O-OFDM optical network architecture utilizing network virtualization across IP and optical layers. A design goal of this architecture is to provide(More)
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