Ara es mostren els items 4-23 de 29

    • Demonstration of C/S based hardware accelerated QoT estimation tool in dynamic impairment-aware optical network 

      Simeonidou, Dimitra; Nejabati, Reza; Qin, Yixuan; Cheng, Kevin C.S.; Triay Marquès, Joan; Escalona, Eduard; Zervas, Georgios S.; Zarris, George; Amaya González, Norberto; Cervelló Pastor, Cristina (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
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      An enhanced version of hardware accelerated QoT estimation tool in impairment-aware optical network is demonstrated and evaluated against the different number of lightpaths and wavelengths per link. It outperforms the ...
    • Demonstration of reconfigurable virtual data center networks enabled by OPS with QoS guarantees 

      Miao, Wang; Peng, Shuping; Spadaro, Salvatore; Bernini, Giacomo; Agraz Bujan, Fernando; Ferrer Ferré, Àlex; Perelló Muntan, Jordi; Zervas, Georgios; Nejabati, Reza; Ciulli, Nicola; Simeonidou, Dimitra; Dorren, Harm; Calabretta, Nicola (Institute of Electrical and Electronics Engineers (IEEE), 2014)
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      We demonstrate a reconfigurable virtual datacenter network by utilizing statistical multiplexing offered by scalable and flow-controlled optical switching system. Results show QoS guarantees by the priority assignment and ...
    • Demonstration of the benefits of SDN technology for all-optical data centre virtualisation 

      Jackson, Chris; Nejabati, Reza; Agraz Bujan, Fernando; Pagès Cruz, Albert; Galili, Michael; Spadaro, Salvatore; Simeonidou, Dimitra (Institute of Electrical and Electronics Engineers (IEEE), 2017)
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      An integrated software stack made up of extended OpenStack, OpenDaylight and custom OpenFlow agents enabling Virtual Data Centre deployment on an all-optical architecture employing hollow-core fibre, TDM fast switches and ...
    • Dynamic impairment-aware optical networking: some experimental results of the EU DICONET project 

      Spadaro, Salvatore; Perelló Muntan, Jordi; Agraz Bujan, Fernando; Angelou, Marianna; Azodolmolky, Siamak; Qin, Yixuan; Nejabati, Reza; Simeonidou, Dimitra; Tomkos, Ioannis (2011)
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      The paper presents some results from the experimental validation of the achievements of the EU DICONET project. Specifically, the DICONET test-bed is presented and the experiments conducted for the performance evaluation ...
    • Enabling multi-tenancy in hybrid optical packet/circuit switched data center networks 

      Peng, Shuping; Nejabati, Reza; Guo, Bingli; Shu, Yan; Zervas, Georgios; Spadaro, Salvatore; Pagès Cruz, Albert; Simeonidou, Dimitra (2014)
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      In a flattened optical data center network employing hybrid technologies, multi-tenancy is enabled by a new virtual data center embedding method that is equipped with network-aware VM placement exploiting the advanced but ...
    • Experimental assessment of an SDN-based control of OPS switching nodes for intra-data center interconnect 

      Agraz Bujan, Fernando; Miao, Wang; Ferrer Delgado, Alejandro; Bernini, Giacomo; Dorren, Harm; Calabretta, Nicola; Ciulli, Nicola; Perelló Muntan, Jordi; Peng, Shuping; Zervas, Georgios; Simeonidou, Dimitra; Junyent Giralt, Gabriel; Spadaro, Salvatore (Institute of Electrical and Electronics Engineers (IEEE), 2014)
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      An SDN-based control framework for OPS switches is experimentally assessed. The OpenFlow messages enabling control communication between SDN controller and OPS switch are validated. Dynamic OPS virtual network slices for ...
    • Experimental assessment of VDC provisioning in SDN/OpenStack-based DC infrastructures with optical DCN 

      Pagès Cruz, Albert; Agraz Bujan, Fernando; Montero Herrera, Rafael; landi, Giada; Monno, Roberto; Aznar, Jose; Viñes, Albert; Jackson, Chris; Simeonidou, Dimitra; Spadaro, Salvatore (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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      VDC provisioning requires the coordinated configuration of several types of resources. We present a DC architecture for the orchestration and provisioning of VDC instances on top of DCs with optical DCN and experimentally ...
    • Experimental demonstration of a novel QoS-aware hybrid optical network 

      Simeonidou, Dimitra; Escalona, Eduard; Qin, Yixuan; Zervas, Georgios; Triay Marquès, Joan; Zarris, George; Amaya González, Norberto; Nejabati, Reza; Cervelló Pastor, Cristina (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
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      This paper presents a hybrid optical test-bed controlled by a hardware-accelerated control plane capable of dynamically provisioning the most suitable route according to the requirements of the client technology and the ...
    • Experimental demonstration of a self-optimised multi-bit-rate optical network 

      Simeonidou, Dimitra; Zervas, Georgios S.; Zarris, George; Amaya González, Norberto; Triay Marquès, Joan; Escalona, Eduard; Qin, Yixuan; Cervelló Pastor, Cristina; Nejabati, Reza (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
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      This paper proposes an innovative self-managed optical network architecture for heterogenous transparent optical networks. A self-optimized dynamic network testbed that comprises multiple multi bit-rate ligthpaths on a ...
    • GMPLS/PCE/OBST architectures for guaranteed sub-wavelength mesh metro network services 

      Triay Marquès, Joan; Zervas, Georgios S.; Cervelló Pastor, Cristina; Simeonidou, Dimitra (2011)
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      This paper presents three innovative GMPLS/PCE/OBST interworking architectures for mesh metro networks which deliver guaranteed contention-free sub-wavelength services with enhanced channel utilization, yet enabling ...
    • ICT BONE views on the network of the future: the role of optical networking 

      Pattavina, Achille; Vlachos, Kyriakos; Petropoulos, Periklis; Callegati, Franco; Spadaro, Salvatore; Castoldi, Piero; Mitchell, John; Franzl, Gerald; Politi, Tanya; Tzanakaki, Anna; O'Mahony, Michael; Katrinis, Kostas; Van Daele, Peter; Pickavet, Mario; Simeonidou, Dimitra; Stavdas, Alexandros (2010)
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      Part of the activities of the ICT EU Network of Excellence “Building the future Optical Network in Europe” (BONE) project is the development of the European Roadmap on Optical Networking in the context of the “Network ...
    • LIGHTNESS: a deeply-programmable SDN-enabled data centre network with OCS/OPS Multicast/Unicast switch-over 

      Saridis, JM; Peng, Shpuping; Yan, Yan; Aguado, Alejandro; Buo, Bingli; Arslan, M; Jackson, C; Miao, Wang; Calabretta, Nicola; Agraz Bujan, Fernando; Spadaro, Salvatore; Bernini, Giacomo; Ciulli, Nicola; Zervas, G; Nejabati, Reza; Simeonidou, Dimitra (Institute of Electrical and Electronics Engineers (IEEE), 2015)
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      We demonstrate an all-optical dynamic DCN utilizing a fully SDN-enabled data-plane including programmable FPGA-based NICs, offering Network Function Virtualization OCS/OPS driven multicasting for Virtual DC applications ...
    • MANTICORE II: IP Network as a Service Pilots at HEAnet, NORDUnet and RedIRIS 

      Cabello, Isidro; Simeonidou, Dimitra; Lonvich, Chris; Uze, Jean Marc; de Miguel, Tomas P.; Fischer, Lars; Wilson, Dave; Reijs, Victor; Grasa Gras, Eduard; Figuerola, Sergi; Barrera, Xavier; Ferrao, Laia; Baez, Carlos; Minoves, Pau; Hesselbach Serra, Xavier; Botero Vega, Juan Felipe (2010)
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      MANTICORE II follows the Infrastructure as a Service (IaaS) paradigm to enable National Research and Education Networks (NRENs) and other e-infrastructure providers to enhance their service portfolio by building and piloting ...
    • Multi-service MAC-enabled OBS networks 

      Triay Marquès, Joan; Zervas, Georgios; Cervelló Pastor, Cristina; Nejabati, Reza; Simeonidou, Dimitra (2010-03)
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      In this paper, a novel multi-service architectural solution based on a MAC protocol for mesh OBS networks is designed and the network performance among TDM services and connectionless burst transmissions is evaluated through ...
    • Multi-tenant software-defined hybrid optical switched data centre 

      Peng, Shuping; Guo, Bingli; Jackson, Chris; Najabati, Reza; Agraz Bujan, Fernando; Spadaro, Salvatore; Bernini, Giacomo; Ciulli, Nicola; Simeonidou, Dimitra (2015-08-01)
      Article
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      We introduce a holistic solution for software-defined optical data centres (DC). Hybrid optical circuit/packet switching technologies are employed in the data plane, while a software-defined networking (SDN) controller ...
    • Multiservice QoS-enabled MAC for optical burst switching 

      Triay Marquès, Joan; Zervas, Georgios S.; Cervelló Pastor, Cristina; Simeonidou, Dimitra (IEEE Press. Institute of Electrical and Electronics Engineers, 2010-07-14)
      Article
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      The emergence of a broad range of network-driven applications (e.g., multimedia, online gaming) brings in the need for a network environment able to provide multiservice capabilities with diverse quality-of-service (QoS) ...
    • Optimal virtual slice composition toward multi-tenancy over hybrid OCS/OPS data center networks 

      Pagès Cruz, Albert; Pérez Sanchis, Miguel; Peng, Shuping; Perelló Muntan, Jordi; Simeonidou, Dimitra; Spadaro, Salvatore (Institute of Electrical and Electronics Engineers (IEEE), 2015-10-01)
      Article
      Accés obert
      Multi-tenancy is a key feature of modern data centers. It allows for the existence of multiple independent virtual infrastructures, called virtual slices, on top of the same physical infrastructure, each of them specially ...
    • Orchestrating virtual slices in data centre infrastructures with optical DCN 

      Pagès Cruz, Albert; Agraz Bujan, Fernando; Montero Herrera, Rafael; Landi, Giada; Capitani, Marco; Gallico, Domenico; Biancani, Matteo; Nejabati, Reza; Simeonidou, Dimitra; Spadaro, Salvatore (2019-07-01)
      Article
      Accés obert
      The emergence of new paradigms and services is pushing the limits of nowadays cloud infrastructures. It is a fact that current solutions lack in the flexibility and configurability to adapt to heterogeneous requirements ...
    • Planning of dynamic virtual optical cloud infrastructures: the GEYSERS approach 

      Tzanakaki, Anna; Anastasopoulos, Markos; Landi, Giada; Bernini, Giacomo; Ciulli, Nicola; Riera, Jordi; Escalona Zorita, Eduard; García Espin, Joan Antoni; Hesselbach Serra, Xavier; Figuerola Fernández, Sergi; Peng, Shuping; Nejabati, Reza; Simeonidou, Dimitra; Parniewicz, Damian; Belter, Bartosz (2014-01-01)
      Article
      Accés restringit per política de l'editorial
      This article focuses on planning and replanning of virtual infrastructures over optical cloud infrastructures comprising integrated optical network and IT resources. This concept has been developed in the context of the ...
    • QoS-Enabled distributed access on optical burst-switched networks 

      Triay Marquès, Joan; Zervas, Georgios; Cervelló Pastor, Cristina; Nejabati, Reza; Simeonidou, Dimitra (IEEE Press. Institute of Electrical and Electronics Engineers, 2010-01)
      Comunicació de congrés
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      Optical Burst Switching (OBS) has been proposed as an efficient technology to cope with the ever increasing bursty traffic on the Internet. The emergence of a broad range of network-driven applications (e.g. multimedia, ...