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Riera J.F.,Fundacio I2CAT | Hesselbach X.,Polytechnic University of Catalonia | Zotkiewicz M.,Warsaw University of Technology | Szostak M.,Warsaw University of Technology | Botero J.-F.,University of Antioquia
International Conference on Transparent Optical Networks

The NFV is focused at virtualizing network functions such as gateways, path computing devices, resource allocation mechanisms, proxies, firewalls and transcoders, traditionally carried out by specialized hardware devices, and migrating these functions to software-based appliances. In this paper, an analytic model for the NFV forwarding graph is proposed with the aim to optimize the execution time of the network services deployed. © 2015 IEEE. Source

Riera J.F.,Fundacio I2CAT | Hesselbach X.,Polytechnic University of Catalonia | Escalona E.,Fundacio I2CAT | Garcia-Espin J.A.,Fundacio I2CAT | Grasa E.,Fundacio I2CAT
International Conference on Transparent Optical Networks

Software-Defined Networking and Network Functions Virtualisation has brought a revolution 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. We provide in this article an overview of the SDN/NFV technologies over optical networks, as well as we provide the first formalisation model for the virtual network function complex scheduling problem. The article aims at being used as starting point in order to optimally solve the scheduling problem of virtual network functions that compose network services to be provisioned within the SDN paradigm. © 2014 IEEE. Source

Szegedi P.,Trans European Research and Education Networking Association | Riera J.F.,Fundacio I2CAT | Garcia-Espin J.A.,Fundacio I2CAT | Hidell M.,KTH Royal Institute of Technology | And 11 more authors.
IEEE Communications Magazine

The Internet, undoubtedly, is the most influential technical invention of the 20th century that affects and constantly changes all aspects of our day-to-day lives nowadays. Although it is hard to predict its long-term consequences, the potential future of the Internet definitely relies on future Internet research. Prior to every development and deployment project, an extensive and comprehensive research study must be performed in order to design, model, analyze, and evaluate all impacts of the new initiative on the existing environment. Taking the ever-growing size of the Internet and the increasing complexity of novel Internet-based applications and services into account, the evaluation and validation of new ideas cannot be effectively carried out over local test beds and small experimental networks. The gap which exists between the small-scale pilots in academic and research test beds and the realsize validations and actual deployments in production networks can be bridged by using virtual infrastructures. FEDERICA is one of the facilities, based on virtualization capabilities in both network and computing resources, which creates custom-made virtual environments and makes them available for Future Internet Researchers. This article provides a comprehensive overview of the state-of-the-art research projects that have been using the virtual infrastructure slices of FEDERICA in order to validate their research concepts, even when they are disruptive to the test bed's infrastructure, to obtain results in realistic network environments. © 2010 IEEE. Source

Grasa E.,Fundacio I2CAT | Trouva E.,Fundacio I2CAT | Bunch S.,TRIA Network Systems LLC | Dewolf P.,TRIA Network Systems LLC | Day J.,Boston University
Proceedings of the 7th International Conference on Future Internet Technologies, CFI'12

RINA is a very promising internetwork architecture based on the fundamental patterns presented in the "Patterns in Network Architecture" book. This paper describes the rationale, major design choices and implementation of a RINA prototype over UDP/IP. The prototype is mainly a tool for research and experimentation, the outcome of this work is not meant to be the final solution, but a vehicle to think deeply and experiment around RINA open research areas. Copyright © 2012 by the Association for Computing Machinery, Inc. Source

Bock C.,Fundacio I2CAT | Figuerola S.,Fundacio I2CAT | Parker M.C.,University of Essex | Quinlan T.,University of Essex | Walker S.D.,University of Essex
International Conference on Transparent Optical Networks

This paper presents an innovative high-bandwidth access network architecture that offers transparent transport services for fixed and mobile applications. Key to this is the development of a high-functionality, low-energy active remote node (ARN) offering high-speed switching and statistical- multiplexing features for maximal exploitation of available network resources, together with radio, wavelength conversion and legacy systems compatibility. The proposed architecture features an optimized and sophisticated management and control plane, allowing service providers to transparently monitor their connections, so simplifying network management and application interoperability with heterogeneous networks. Although inherently future-proofed, the proposed network platform is also intrinsically compatible with existing PON and wireless access solutions: fixed fibre and radio access, LTE and beyond, and legacy services (CATV and DSL technologies) can all be delivered and managed in an open access environment. In addition, its low-energy and low-cost design offers an environmentally sustainable technology solution, whilst acting as a critical enabler for new smart services, e-society initiatives, and intelligent lifestyle management. © 2012 IEEE. Source

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