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The Experts below are selected from a list of 8058 Experts worldwide ranked by ideXlab platform

Kenneth Van Surksum - One of the best experts on this subject based on the ideXlab platform.

Panagiotis Papadimitriou - One of the best experts on this subject based on the ideXlab platform.

  • towards a scalable software defined network Virtualization Platform
    Network Operations and Management Symposium, 2014
    Co-Authors: Zdravko Bozakov, Panagiotis Papadimitriou
    Abstract:

    Software-defined networking (SDN) has emerged to circumvent the difficulty of introducing new functionality into the network. The widespread adoption of SDN technologies, such as OpenFlow, can facilitate the deployment of novel network functions and new services. Network infrastructure providers can significantly benefit from the SDN paradigm by leasing network slices with SDN support to Service Providers and end-users. Currently, the deployment of arbitrary virtual SDN topologies entails significant configuration overhead for SDN operators. To this end, we present a SDN Virtualization layer that orchestrates the deployment and management of virtual SDNs (vSDN). The so-called SDN hypervisor generates and installs the forwarding entries required for vSDN setup and also coordinates the necessary switch flow table modifications for seamless resource migration. Furthermore, the hypervisor transparently rewrites all control messages enforcing flowspace isolation while giving to the vSDN operator the illusion of exclusive access control. We explore the design space and prerequisites for SDN Virtualization, including the selection and encoding of packet identifiers, the resolution of flowspace identifiers, and the configuration and consolidation of multiple virtual flow tables onto a single switch in order to provide support for arbitrary topologies. Furthermore, we discuss the scalability of the SDN control and data plane.

  • NOMS - Towards a scalable software-defined network Virtualization Platform
    2014 IEEE Network Operations and Management Symposium (NOMS), 2014
    Co-Authors: Zdravko Bozakov, Panagiotis Papadimitriou
    Abstract:

    Software-defined networking (SDN) has emerged to circumvent the difficulty of introducing new functionality into the network. The widespread adoption of SDN technologies, such as OpenFlow, can facilitate the deployment of novel network functions and new services. Network infrastructure providers can significantly benefit from the SDN paradigm by leasing network slices with SDN support to Service Providers and end-users. Currently, the deployment of arbitrary virtual SDN topologies entails significant configuration overhead for SDN operators. To this end, we present a SDN Virtualization layer that orchestrates the deployment and management of virtual SDNs (vSDN). The so-called SDN hypervisor generates and installs the forwarding entries required for vSDN setup and also coordinates the necessary switch flow table modifications for seamless resource migration. Furthermore, the hypervisor transparently rewrites all control messages enforcing flowspace isolation while giving to the vSDN operator the illusion of exclusive access control. We explore the design space and prerequisites for SDN Virtualization, including the selection and encoding of packet identifiers, the resolution of flowspace identifiers, and the configuration and consolidation of multiple virtual flow tables onto a single switch in order to provide support for arbitrary topologies. Furthermore, we discuss the scalability of the SDN control and data plane.

Zdravko Bozakov - One of the best experts on this subject based on the ideXlab platform.

  • towards a scalable software defined network Virtualization Platform
    Network Operations and Management Symposium, 2014
    Co-Authors: Zdravko Bozakov, Panagiotis Papadimitriou
    Abstract:

    Software-defined networking (SDN) has emerged to circumvent the difficulty of introducing new functionality into the network. The widespread adoption of SDN technologies, such as OpenFlow, can facilitate the deployment of novel network functions and new services. Network infrastructure providers can significantly benefit from the SDN paradigm by leasing network slices with SDN support to Service Providers and end-users. Currently, the deployment of arbitrary virtual SDN topologies entails significant configuration overhead for SDN operators. To this end, we present a SDN Virtualization layer that orchestrates the deployment and management of virtual SDNs (vSDN). The so-called SDN hypervisor generates and installs the forwarding entries required for vSDN setup and also coordinates the necessary switch flow table modifications for seamless resource migration. Furthermore, the hypervisor transparently rewrites all control messages enforcing flowspace isolation while giving to the vSDN operator the illusion of exclusive access control. We explore the design space and prerequisites for SDN Virtualization, including the selection and encoding of packet identifiers, the resolution of flowspace identifiers, and the configuration and consolidation of multiple virtual flow tables onto a single switch in order to provide support for arbitrary topologies. Furthermore, we discuss the scalability of the SDN control and data plane.

  • NOMS - Towards a scalable software-defined network Virtualization Platform
    2014 IEEE Network Operations and Management Symposium (NOMS), 2014
    Co-Authors: Zdravko Bozakov, Panagiotis Papadimitriou
    Abstract:

    Software-defined networking (SDN) has emerged to circumvent the difficulty of introducing new functionality into the network. The widespread adoption of SDN technologies, such as OpenFlow, can facilitate the deployment of novel network functions and new services. Network infrastructure providers can significantly benefit from the SDN paradigm by leasing network slices with SDN support to Service Providers and end-users. Currently, the deployment of arbitrary virtual SDN topologies entails significant configuration overhead for SDN operators. To this end, we present a SDN Virtualization layer that orchestrates the deployment and management of virtual SDNs (vSDN). The so-called SDN hypervisor generates and installs the forwarding entries required for vSDN setup and also coordinates the necessary switch flow table modifications for seamless resource migration. Furthermore, the hypervisor transparently rewrites all control messages enforcing flowspace isolation while giving to the vSDN operator the illusion of exclusive access control. We explore the design space and prerequisites for SDN Virtualization, including the selection and encoding of packet identifiers, the resolution of flowspace identifiers, and the configuration and consolidation of multiple virtual flow tables onto a single switch in order to provide support for arbitrary topologies. Furthermore, we discuss the scalability of the SDN control and data plane.

Chung-ho Chen - One of the best experts on this subject based on the ideXlab platform.

  • CASL hypervisor and its Virtualization Platform
    2013 IEEE International Symposium on Circuits and Systems (ISCAS2013), 2013
    Co-Authors: Chien-Te Liu, Kuan-chung Chen, Chung-ho Chen
    Abstract:

    In this paper, we present an ARM-based hardwareassisted hypervisor, named CASL-Hypervisor, and a full system Virtualization Platform developed in SystemC which enables software/hardware co-simulation of virtual machine systems. CASL-Hypervisor takes advantage of an additional processor mode, extended memory management unit, configurable hardware traps and specialized hardware devices to virtualize unmodified Linux-based guest operating systems. By utilizing hardware extensions, development effort of CASL-Hypervisor can be greatly reduced and the hypervisor has achieved relatively low Virtualization overhead. Evaluation is demonstrated on an approximately-timed manner so it is able to do fast software/hardware co-simulation and evaluations. We use the ARM-v7A instruction set simulator as the host processor. The hypervisor overhead can be quantified through instruction count ratio of guest operating system to the hypervisor. The results show that CASL-Hypervisor successfully virtualizes four guest operating systems with about 9.78% overhead.

  • ISCAS - CASL hypervisor and its Virtualization Platform
    2013 IEEE International Symposium on Circuits and Systems (ISCAS2013), 2013
    Co-Authors: Chien-Te Liu, Kuan-chung Chen, Chung-ho Chen
    Abstract:

    In this paper, we present an ARM-based hardwareassisted hypervisor, named CASL-Hypervisor, and a full system Virtualization Platform developed in SystemC which enables software/hardware co-simulation of virtual machine systems. CASL-Hypervisor takes advantage of an additional processor mode, extended memory management unit, configurable hardware traps and specialized hardware devices to virtualize unmodified Linux-based guest operating systems. By utilizing hardware extensions, development effort of CASL-Hypervisor can be greatly reduced and the hypervisor has achieved relatively low Virtualization overhead. Evaluation is demonstrated on an approximately-timed manner so it is able to do fast software/hardware co-simulation and evaluations. We use the ARM-v7A instruction set simulator as the host processor. The hypervisor overhead can be quantified through instruction count ratio of guest operating system to the hypervisor. The results show that CASL-Hypervisor successfully virtualizes four guest operating systems with about 9.78% overhead.

Chien-Te Liu - One of the best experts on this subject based on the ideXlab platform.

  • CASL hypervisor and its Virtualization Platform
    2013 IEEE International Symposium on Circuits and Systems (ISCAS2013), 2013
    Co-Authors: Chien-Te Liu, Kuan-chung Chen, Chung-ho Chen
    Abstract:

    In this paper, we present an ARM-based hardwareassisted hypervisor, named CASL-Hypervisor, and a full system Virtualization Platform developed in SystemC which enables software/hardware co-simulation of virtual machine systems. CASL-Hypervisor takes advantage of an additional processor mode, extended memory management unit, configurable hardware traps and specialized hardware devices to virtualize unmodified Linux-based guest operating systems. By utilizing hardware extensions, development effort of CASL-Hypervisor can be greatly reduced and the hypervisor has achieved relatively low Virtualization overhead. Evaluation is demonstrated on an approximately-timed manner so it is able to do fast software/hardware co-simulation and evaluations. We use the ARM-v7A instruction set simulator as the host processor. The hypervisor overhead can be quantified through instruction count ratio of guest operating system to the hypervisor. The results show that CASL-Hypervisor successfully virtualizes four guest operating systems with about 9.78% overhead.

  • ISCAS - CASL hypervisor and its Virtualization Platform
    2013 IEEE International Symposium on Circuits and Systems (ISCAS2013), 2013
    Co-Authors: Chien-Te Liu, Kuan-chung Chen, Chung-ho Chen
    Abstract:

    In this paper, we present an ARM-based hardwareassisted hypervisor, named CASL-Hypervisor, and a full system Virtualization Platform developed in SystemC which enables software/hardware co-simulation of virtual machine systems. CASL-Hypervisor takes advantage of an additional processor mode, extended memory management unit, configurable hardware traps and specialized hardware devices to virtualize unmodified Linux-based guest operating systems. By utilizing hardware extensions, development effort of CASL-Hypervisor can be greatly reduced and the hypervisor has achieved relatively low Virtualization overhead. Evaluation is demonstrated on an approximately-timed manner so it is able to do fast software/hardware co-simulation and evaluations. We use the ARM-v7A instruction set simulator as the host processor. The hypervisor overhead can be quantified through instruction count ratio of guest operating system to the hypervisor. The results show that CASL-Hypervisor successfully virtualizes four guest operating systems with about 9.78% overhead.

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