The Experts below are selected from a list of 60 Experts worldwide ranked by ideXlab platform

Bernard Cousin - One of the best experts on this subject based on the ideXlab platform.

  • Equal Cost Multiple Path Energy-Aware Routing in Carrier-Ethernet Networks with Bundled Links
    2017
    Co-Authors: Rihab Maaloul, Lamia Chaari, Raouia Taktak, Bernard Cousin
    Abstract:

    The reduction of operational expenditure has become a major concern for telecommunication operators and Internet service providers. In this paper, we propose an energy aware routing (EAR) in Carrier Ethernet Networks operating with Shortest Path Bridging (SPB) protocol with equal cost multi-path (ECMP). Since traffic load has no influence on power consumption of Carrier Ethernet Network elements, the conventional solution to reduce power consumption is to find the maximal set of Network elements that can be turned off/on so that the Network performance is not deteriorated. To tackle this optimization problem, we propose an exact method based on Mixed Integer Linear Programming (MILP) formulation, called SPB energy-aware routing (SPB-EAR). Since SPB-EAR is proved to be NP-hard, we present two heuristics algorithm suitable for large-sized Networks, called Green SPB (G-SPB) and Fast Greedy SPB (FG-SPB). In this work, we consider that a connection between two nodes is represented by bundled link consisting of multiple cables. Experimentations on four realistic Network topologies show that G-SPB and FG-SPB can save almost as much power consumption as SPB-EAR.

  • Study of Energy Saving in Carrier-Ethernet Network
    2014
    Co-Authors: Rihab Maaloul, Lamia Chaari Fourati, Bernard Cousin
    Abstract:

    Energy saving is a really interesting topic in today's Networks. Indeed Information and Communication Technologies (ICT) systems are energy greedy, they require more and more energy and as energy is more and more expensive we seek to save it. Accordingly, energy saving has recently received considerable attention, as a promising approach for delivering ICT services with environmentally conscious use of technology by implementing energy aware strategies in Networks infrastructures which lead to improve Network resources utilization. Thus this paper addresses the issue of energy consumption in telecommunication Networks and especially in Carrier-Ethernet Networks. We review and describe relevant works currently proposed for energy-efficient operation of wired Network infrastructure. Besides surveying some of the different technical issues that researchers are currently facing to reduce the energy consumption in Networking, this paper identifies some of the remaining key research challenges that arise when such energy-saving techniques are extended for use in Carrier Ethernet Networks.

Gee-kung Chang - One of the best experts on this subject based on the ideXlab platform.

  • Ethernet Services Transport Protocol with Configurable-QoS Attributes for Carrier Ethernet
    2015
    Co-Authors: Claudio Estevez, Georgios Ellinas, Gee-kung Chang
    Abstract:

    Abstract. Carrier-grade Ethernet has evolved greatly since its creation. Its simplicity, scalability, and inexpensiveness have made it an attractive technology for enterprises to interconnect their metro area Networks (MANs). Today, Carrier Ethernet can span over 10,000 km. Ethernet Services were created to enable companies to distribute their own services through the Carrier-grade Network. All the data that enters the Carrier Ethernet Network (CEN) is policed by the CEN provider based on the service level agreement (SLA). Among the QoS attributes that are agreed upon is the packet loss rate (PLR) guarantee, committed information rate (CIR) and excess information rate (EIR). In this work we study the relation between PLR and throughput performance. This relationship can then be used to increase the throughput performance of the Ethernet Services transport protocol (ESTP). It achieves this by configuring an ESTP parameter that allows the CEN provider to increase the user’s throughput at the cost of PLR or vice versa. This increase is done while main maintaining the throughput above the CIR and below the EIR using only transport-layer algorithms

  • GLOBECOM Workshops - Ethernet-Services transport protocol design oriented to Carrier Ethernet Networks
    2012 IEEE Globecom Workshops, 2012
    Co-Authors: Claudio Estevez, Georgios Ellinas, Sergio Angulo, Alfonso Ehijo, Gee-kung Chang
    Abstract:

    A Carrier Ethernet Network (CEN) is a versatile, standardized, ubiquitous, Carrier-class Network. It possess several attributes that distinguish it from Metro Ethernet Networks (MENs), quality of service (QoS) being an integral one. Because CENs are designed to cover large areas (thousands of km) and transmit at high data rates (100 Gbps), these Networks have a high bandwidth-delay product (BDP). Long distance transmissions that require data integrity suffer a transport-layer throughput bottleneck effect. Under these conditions, systems (including testbeds) exhibit a detrimental performance evaluation reduction as the round-trip time (RTT) increases. A new transport protocol is proposed to overcome the difficulties these Networks incur, while providing QoS guarantees at the transport-layer level, hence maintaining the committed throughput levels established in the service level agreement (SLA). The proposed protocol, which is called Ethernet Services transport protocol (ESTP), is able to obtain congestion level feedback using only layer-4 information rather than assuming congestion based on a single packet loss event. An important aspect of this work is that it is validated by theoretical, simulated, and experimental results.

  • BROADNETS - Ethernet Services Transport Protocol with Configurable-QoS Attributes for Carrier Ethernet
    Lecture Notes of the Institute for Computer Sciences Social Informatics and Telecommunications Engineering, 2010
    Co-Authors: Claudio Estevez, Georgios Ellinas, Gee-kung Chang
    Abstract:

    Carrier-grade Ethernet has evolved greatly since its creation. Its simplicity, scalability, and inexpensiveness have made it an attractive technology for enterprises to interconnect their metro area Networks (MANs). Today, Carrier Ethernet can span over 10,000 km. Ethernet Services were created to enable companies to distribute their own services through the Carrier-grade Network. All the data that enters the Carrier Ethernet Network (CEN) is policed by the CEN provider based on the service level agreement (SLA). Among the QoS attributes that are agreed upon is the packet loss rate (PLR) guarantee, committed information rate (CIR) and excess information rate (EIR). In this work we study the relation between PLR and throughput performance. This relationship can then be used to increase the throughput performance of the Ethernet Services transport protocol (ESTP). It achieves this by configuring an ESTP parameter that allows the CEN provider to increase the user’s throughput at the cost of PLR or vice versa. This increase is done while main maintaining the throughput above the CIR and below the EIR using only transport-layer algorithms.

Cousin Bernard - One of the best experts on this subject based on the ideXlab platform.

  • Equal Cost Multiple Path Energy-Aware Routing in Carrier-Ethernet Networks with Bundled Links
    HAL CCSD, 2017
    Co-Authors: Maaloul Rihab, Taktak Raouia, Chaari Lamia, Cousin Bernard
    Abstract:

    International audienceThe reduction of operational expenditure has become a major concern for telecommunication operators and Internet service providers. In this paper, we propose an energy aware routing (EAR) in Carrier Ethernet Networks operating with Shortest Path Bridging (SPB) protocol with equal cost multi-path (ECMP). Since traffic load has no influence on power consumption of Carrier Ethernet Network elements, the conventional solution to reduce power consumption is to find the maximal set of Network elements that can be turned off/on so that the Network performance is not deteriorated. To tackle this optimization problem, we propose an exact method based on Mixed Integer Linear Programming (MILP) formulation, called SPB energy-aware routing (SPB-EAR). Since SPB-EAR is proved to be NP-hard, we present two heuristics algorithm suitable for large-sized Networks, called Green SPB (G-SPB) and Fast Greedy SPB (FG-SPB). In this work, we consider that a connection between two nodes is represented by bundled link consisting of multiple cables. Experimentations on four realistic Network topologies show that G-SPB and FG-SPB can save almost as much power consumption as SPB-EAR

  • Study of Energy Saving in Carrier-Ethernet Network
    'Institute of Electrical and Electronics Engineers (IEEE)', 2014
    Co-Authors: Maaloul Rihab, Chaari Fourati Lamia, Cousin Bernard
    Abstract:

    International audienceEnergy saving is a really interesting topic in today's Networks. Indeed Information and Communication Technologies (ICT) systems are energy greedy, they require more and more energy and as energy is more and more expensive we seek to save it. Accordingly, energy saving has recently received considerable attention, as a promising approach for delivering ICT services with environmentally conscious use of technology by implementing energy aware strategies in Networks infrastructures which lead to improve Network resources utilization. Thus this paper addresses the issue of energy consumption in telecommunication Networks and especially in Carrier-Ethernet Networks. We review and describe relevant works currently proposed for energy-efficient operation of wired Network infrastructure. Besides surveying some of the different technical issues that researchers are currently facing to reduce the energy consumption in Networking, this paper identifies some of the remaining key research challenges that arise when such energy-saving techniques are extended for use in Carrier Ethernet Networks

Rihab Maaloul - One of the best experts on this subject based on the ideXlab platform.

  • Equal Cost Multiple Path Energy-Aware Routing in Carrier-Ethernet Networks with Bundled Links
    2017
    Co-Authors: Rihab Maaloul, Lamia Chaari, Raouia Taktak, Bernard Cousin
    Abstract:

    The reduction of operational expenditure has become a major concern for telecommunication operators and Internet service providers. In this paper, we propose an energy aware routing (EAR) in Carrier Ethernet Networks operating with Shortest Path Bridging (SPB) protocol with equal cost multi-path (ECMP). Since traffic load has no influence on power consumption of Carrier Ethernet Network elements, the conventional solution to reduce power consumption is to find the maximal set of Network elements that can be turned off/on so that the Network performance is not deteriorated. To tackle this optimization problem, we propose an exact method based on Mixed Integer Linear Programming (MILP) formulation, called SPB energy-aware routing (SPB-EAR). Since SPB-EAR is proved to be NP-hard, we present two heuristics algorithm suitable for large-sized Networks, called Green SPB (G-SPB) and Fast Greedy SPB (FG-SPB). In this work, we consider that a connection between two nodes is represented by bundled link consisting of multiple cables. Experimentations on four realistic Network topologies show that G-SPB and FG-SPB can save almost as much power consumption as SPB-EAR.

  • Study of Energy Saving in Carrier-Ethernet Network
    2014
    Co-Authors: Rihab Maaloul, Lamia Chaari Fourati, Bernard Cousin
    Abstract:

    Energy saving is a really interesting topic in today's Networks. Indeed Information and Communication Technologies (ICT) systems are energy greedy, they require more and more energy and as energy is more and more expensive we seek to save it. Accordingly, energy saving has recently received considerable attention, as a promising approach for delivering ICT services with environmentally conscious use of technology by implementing energy aware strategies in Networks infrastructures which lead to improve Network resources utilization. Thus this paper addresses the issue of energy consumption in telecommunication Networks and especially in Carrier-Ethernet Networks. We review and describe relevant works currently proposed for energy-efficient operation of wired Network infrastructure. Besides surveying some of the different technical issues that researchers are currently facing to reduce the energy consumption in Networking, this paper identifies some of the remaining key research challenges that arise when such energy-saving techniques are extended for use in Carrier Ethernet Networks.

Claudio Estevez - One of the best experts on this subject based on the ideXlab platform.

  • Ethernet Services Transport Protocol with Configurable-QoS Attributes for Carrier Ethernet
    2015
    Co-Authors: Claudio Estevez, Georgios Ellinas, Gee-kung Chang
    Abstract:

    Abstract. Carrier-grade Ethernet has evolved greatly since its creation. Its simplicity, scalability, and inexpensiveness have made it an attractive technology for enterprises to interconnect their metro area Networks (MANs). Today, Carrier Ethernet can span over 10,000 km. Ethernet Services were created to enable companies to distribute their own services through the Carrier-grade Network. All the data that enters the Carrier Ethernet Network (CEN) is policed by the CEN provider based on the service level agreement (SLA). Among the QoS attributes that are agreed upon is the packet loss rate (PLR) guarantee, committed information rate (CIR) and excess information rate (EIR). In this work we study the relation between PLR and throughput performance. This relationship can then be used to increase the throughput performance of the Ethernet Services transport protocol (ESTP). It achieves this by configuring an ESTP parameter that allows the CEN provider to increase the user’s throughput at the cost of PLR or vice versa. This increase is done while main maintaining the throughput above the CIR and below the EIR using only transport-layer algorithms

  • GLOBECOM Workshops - Ethernet-Services transport protocol design oriented to Carrier Ethernet Networks
    2012 IEEE Globecom Workshops, 2012
    Co-Authors: Claudio Estevez, Georgios Ellinas, Sergio Angulo, Alfonso Ehijo, Gee-kung Chang
    Abstract:

    A Carrier Ethernet Network (CEN) is a versatile, standardized, ubiquitous, Carrier-class Network. It possess several attributes that distinguish it from Metro Ethernet Networks (MENs), quality of service (QoS) being an integral one. Because CENs are designed to cover large areas (thousands of km) and transmit at high data rates (100 Gbps), these Networks have a high bandwidth-delay product (BDP). Long distance transmissions that require data integrity suffer a transport-layer throughput bottleneck effect. Under these conditions, systems (including testbeds) exhibit a detrimental performance evaluation reduction as the round-trip time (RTT) increases. A new transport protocol is proposed to overcome the difficulties these Networks incur, while providing QoS guarantees at the transport-layer level, hence maintaining the committed throughput levels established in the service level agreement (SLA). The proposed protocol, which is called Ethernet Services transport protocol (ESTP), is able to obtain congestion level feedback using only layer-4 information rather than assuming congestion based on a single packet loss event. An important aspect of this work is that it is validated by theoretical, simulated, and experimental results.

  • BROADNETS - Ethernet Services Transport Protocol with Configurable-QoS Attributes for Carrier Ethernet
    Lecture Notes of the Institute for Computer Sciences Social Informatics and Telecommunications Engineering, 2010
    Co-Authors: Claudio Estevez, Georgios Ellinas, Gee-kung Chang
    Abstract:

    Carrier-grade Ethernet has evolved greatly since its creation. Its simplicity, scalability, and inexpensiveness have made it an attractive technology for enterprises to interconnect their metro area Networks (MANs). Today, Carrier Ethernet can span over 10,000 km. Ethernet Services were created to enable companies to distribute their own services through the Carrier-grade Network. All the data that enters the Carrier Ethernet Network (CEN) is policed by the CEN provider based on the service level agreement (SLA). Among the QoS attributes that are agreed upon is the packet loss rate (PLR) guarantee, committed information rate (CIR) and excess information rate (EIR). In this work we study the relation between PLR and throughput performance. This relationship can then be used to increase the throughput performance of the Ethernet Services transport protocol (ESTP). It achieves this by configuring an ESTP parameter that allows the CEN provider to increase the user’s throughput at the cost of PLR or vice versa. This increase is done while main maintaining the throughput above the CIR and below the EIR using only transport-layer algorithms.