The Experts below are selected from a list of 9213 Experts worldwide ranked by ideXlab platform

Leonid G. Kazovsky - One of the best experts on this subject based on the ideXlab platform.

  • Scaling Metropolitan Area Networks to 1Tb/s and beyond with HORNET
    2004
    Co-Authors: Leonid G. Kazovsky, M.s. Rogge
    Abstract:

    The backbone of large scale, high capacity Networks such as the Internet are almost exclusively interconnected with optical communication links. As of today, only optics can cost-effectively provide the link capacity and reach necessary for long-haul and Metropolitan Area Networks. Even before the Internet, the long distance telephone network relied on optical links to transmit voice traffic between and among cities. These Networks used Synchronous Optical Network (SONET), or Synchronous Digital Hierarchy (SDH) outside of North America. As the Internet burgeoned, carriers continued to deploy ever higher capacity SONET/SDH equipment, despite the fact that this type of physical layer was never designed to handle bursty data traffic. As SONET/SDH continually evolve to address their inefficiency in handling bursty traffic, newer protocols designed with the Internet in mind are materializing. In the Metropolitan Area network space, the Resilient Packet Ring (RPR) is emerging from the IEEE 802.17 working group. While efficiency is important, it is also clear that capacity requirements will continue to grow. Metropolitan Area Networks offering loads of 100s of Gigabits per second will not be uncommon. Such capacities will likely be addressed with wavelength division multiplexing (WDM). WDM systems, if not designed carefully, require an excessive amount of opto-electrical components and a correspondingly high cost. An ideal Metropolitan Area network (MAN) architecture efficiently handles Internet traffic and provides scalability toward a Terabit per second while allowing network operators to compete in the cost-sensitive MAN market. A new MAN architecture called HORNET has been developed at Stanford University's Photonics and Networking Research Laboratory (PNRL). The architecture uses fast-tunable packet transmitters and wavelength routing to significantly reduce the amount of opto-electronic equipment required at network nodes. HORNET cost-effectively scales to support aggregate loads beyond 1 Terabit per second and handles bursty traffic by design. The HORNET architecture is presented in this dissertation. HORNET protocols designed to support any-to-any guaranteed bit-rate circuits and best-effort packet services simultaneously are described. The subsystems developed to realize HORNET are discussed. An experimental testbed is built to investigate HORNET and demonstrate its features and feasibility.

  • Optical Metropolitan Area Networks
    OFC 2001. Optical Fiber Communication Conference and Exhibit. Technical Digest Postconference Edition (IEEE Cat. 01CH37171), 2001
    Co-Authors: Leonid G. Kazovsky, I M White, K Shrikhande, M.s. Rogge, D Wonglumsom
    Abstract:

    This paper discusses emerging issues in the development of future optical Metropolitan Area Networks and describes the pioneering research at Stanford University to address some of them. The optical MAN space is seeing great innovation in industry and research. Trends such as network-wide reconfiguration, Internet protocol (IP) over WDM transport, tunable OADMs and novel fibers will emerge at the networking and physical layers. Through our four MAN networking projects, the Stanford OCRL has made a significant contribution to this innovation, which will help build powerful and exciting optical MANs.

  • High capacity Metropolitan Area Networks for the next generation Internet
    Conference Record of Thirty-Fifth Asilomar Conference on Signals Systems and Computers (Cat.No.01CH37256), 2001
    Co-Authors: Leonid G. Kazovsky, I M White, K Shrikhande, M.s. Rogge
    Abstract:

    High capacity Metropolitan Area Networks must be developed to enable future generations of high-speed multimedia Internet applications and services. This paper discusses emerging issues in the development of future optical Metropolitan Area Networks and describes the pioneering research at Stanford University to address some of them. In particular, the HORNET project, which boasts a new architecture and novel subsystems for next generation high capacity Metropolitan Networks, is featured in this paper.

  • wdm Metropolitan Area network based on csma ca packet switching
    IEEE Photonics Technology Letters, 1999
    Co-Authors: S M Gemelos, I M White, D Wonglumsom, K Shrikhande, Leonid G. Kazovsky
    Abstract:

    The bursty nature of traffic in Metropolitan Area Networks results in underutilized and inefficient SONET Networks. The hybrid optoelectronic ring network (HORNET) is a network being developed at the Optical Communications Research Laboratory at Stanford University to address the problems of SONET transport in Metropolitan Area Networks (MAN's). HORNET performs packet switching using a fast-tunable wavelength transmitter, which hops to different wavelengths on a packet-by-packet basis. In this letter, we present simulation results which quantify the benefits of a wavelength tunable transmitter in a packet switched wavelength-division-multiplexed MAN. We show that a tunable transmitter is able to take advantage of imbalances in wavelength utilization, and provides a 45% improvement in packet latency characteristics. We also show that in order to maintain these benefits the tuning time of the transmitter cannot exceed 10% of the packet transmit time.

  • Future Optical Metropolitan Area Networks
    Optical Networking, 1999
    Co-Authors: S M Gemelos, I M White, D Wonglumsom, Leonid G. Kazovsky, K. Shrikhade, H. Huey
    Abstract:

    Building on well-known Stanford experimental WDM Networks — STARNET and CORD — the Optical Communications Research Laboratory (OCRL) at Stanford has continued to investigate future WDM Networks. In this paper, we describe two new Stanford experimental Networks, LEARN and HORNET. LEARN is a reconfigurable circuit switched WDM experimental network interconnecting the campuses of Sprint Advanced Technology Laboratories (An) in Burlingame, CA and Stanford OCRL in Stanford, CA. HORNET is a hybrid optoelectronic packet-switched WDM networking experiment designed to overcome the limitations of circuit switching. We discuss lessons learned from past Stanford projects and describe challenges to be met in the future concerning WDM Metropolitan Area Networks (MANs). Lastly, we describe the approach of Terabit Networks, Inc. to future WDM MANS. Terabit Networks is a new company building on Stanford technology to provide highly efficient high-bandwidth MAN solutions optimized for data traffic.

Sudhir Dixit - One of the best experts on this subject based on the ideXlab platform.

  • All-optical packet switching for Metropolitan Area Networks: opportunities and challenges
    IEEE Communications Magazine, 2001
    Co-Authors: S. J.ben Yoo, Biswanath Mukherjee, Sudhir Dixit
    Abstract:

    The fast evolution of Networks has been continuously driven by new advances in enabling technologies, as well as the growth of Internet traffic. All-optical packet switching provides high throughput, rich routing functionalities, and excellent flexibility. These characteristics make it an excellent candidate for next-generation Metropolitan Area Networks, which will be much more dynamic and demanding than today's Networks. In this article we not only discuss some of the architectural challenges involved in the design of all-optical packet switched Networks, but also present the reader a high-level picture of how such future Networks could be integrated with other network segments, to provide users end-to-end connectivity with performance and simplicity

S M Gemelos - One of the best experts on this subject based on the ideXlab platform.

  • wdm Metropolitan Area network based on csma ca packet switching
    IEEE Photonics Technology Letters, 1999
    Co-Authors: S M Gemelos, I M White, D Wonglumsom, K Shrikhande, Leonid G. Kazovsky
    Abstract:

    The bursty nature of traffic in Metropolitan Area Networks results in underutilized and inefficient SONET Networks. The hybrid optoelectronic ring network (HORNET) is a network being developed at the Optical Communications Research Laboratory at Stanford University to address the problems of SONET transport in Metropolitan Area Networks (MAN's). HORNET performs packet switching using a fast-tunable wavelength transmitter, which hops to different wavelengths on a packet-by-packet basis. In this letter, we present simulation results which quantify the benefits of a wavelength tunable transmitter in a packet switched wavelength-division-multiplexed MAN. We show that a tunable transmitter is able to take advantage of imbalances in wavelength utilization, and provides a 45% improvement in packet latency characteristics. We also show that in order to maintain these benefits the tuning time of the transmitter cannot exceed 10% of the packet transmit time.

  • Future Optical Metropolitan Area Networks
    Optical Networking, 1999
    Co-Authors: S M Gemelos, I M White, D Wonglumsom, Leonid G. Kazovsky, K. Shrikhade, H. Huey
    Abstract:

    Building on well-known Stanford experimental WDM Networks — STARNET and CORD — the Optical Communications Research Laboratory (OCRL) at Stanford has continued to investigate future WDM Networks. In this paper, we describe two new Stanford experimental Networks, LEARN and HORNET. LEARN is a reconfigurable circuit switched WDM experimental network interconnecting the campuses of Sprint Advanced Technology Laboratories (An) in Burlingame, CA and Stanford OCRL in Stanford, CA. HORNET is a hybrid optoelectronic packet-switched WDM networking experiment designed to overcome the limitations of circuit switching. We discuss lessons learned from past Stanford projects and describe challenges to be met in the future concerning WDM Metropolitan Area Networks (MANs). Lastly, we describe the approach of Terabit Networks, Inc. to future WDM MANS. Terabit Networks is a new company building on Stanford technology to provide highly efficient high-bandwidth MAN solutions optimized for data traffic.

  • WDM Metropolitan Area network based on CSMA/CA packet switching
    Photonics Technology Letters IEEE, 1999
    Co-Authors: S M Gemelos, I M White, D Wonglumsom, T One, K Shrikhande, Leonid G. Kazovsky
    Abstract:

    The bursty nature of traffic in Metropolitan Area Networks results in underutilized and inefficient SONET Networks. The hybrid optoelectronic ring network (HORNET) is a network being developed at the Optical Communications Research Laboratory at Stanford University to address the problems of SONET transport in Metropolitan Area Networks (MAN's). HORNET performs packet switching using a fast-tunable wavelength transmitter, which hops to different wavelengths on a packet-by-packet basis. In this letter, we present simulation results which quantify the benefits of a wavelength tunable transmitter in a packet switched wavelength-division-multiplexed MAN. We show that a tunable transmitter is able to take advantage of imbalances in wavelength utilization, and provides a 45% improvement in packet latency characteristics. We also show that in order to maintain these benefits the tuning time of the transmitter cannot exceed 10% of the packet transmit time

D Wonglumsom - One of the best experts on this subject based on the ideXlab platform.

  • Optical Metropolitan Area Networks
    OFC 2001. Optical Fiber Communication Conference and Exhibit. Technical Digest Postconference Edition (IEEE Cat. 01CH37171), 2001
    Co-Authors: Leonid G. Kazovsky, I M White, K Shrikhande, M.s. Rogge, D Wonglumsom
    Abstract:

    This paper discusses emerging issues in the development of future optical Metropolitan Area Networks and describes the pioneering research at Stanford University to address some of them. The optical MAN space is seeing great innovation in industry and research. Trends such as network-wide reconfiguration, Internet protocol (IP) over WDM transport, tunable OADMs and novel fibers will emerge at the networking and physical layers. Through our four MAN networking projects, the Stanford OCRL has made a significant contribution to this innovation, which will help build powerful and exciting optical MANs.

  • wdm Metropolitan Area network based on csma ca packet switching
    IEEE Photonics Technology Letters, 1999
    Co-Authors: S M Gemelos, I M White, D Wonglumsom, K Shrikhande, Leonid G. Kazovsky
    Abstract:

    The bursty nature of traffic in Metropolitan Area Networks results in underutilized and inefficient SONET Networks. The hybrid optoelectronic ring network (HORNET) is a network being developed at the Optical Communications Research Laboratory at Stanford University to address the problems of SONET transport in Metropolitan Area Networks (MAN's). HORNET performs packet switching using a fast-tunable wavelength transmitter, which hops to different wavelengths on a packet-by-packet basis. In this letter, we present simulation results which quantify the benefits of a wavelength tunable transmitter in a packet switched wavelength-division-multiplexed MAN. We show that a tunable transmitter is able to take advantage of imbalances in wavelength utilization, and provides a 45% improvement in packet latency characteristics. We also show that in order to maintain these benefits the tuning time of the transmitter cannot exceed 10% of the packet transmit time.

  • Future Optical Metropolitan Area Networks
    Optical Networking, 1999
    Co-Authors: S M Gemelos, I M White, D Wonglumsom, Leonid G. Kazovsky, K. Shrikhade, H. Huey
    Abstract:

    Building on well-known Stanford experimental WDM Networks — STARNET and CORD — the Optical Communications Research Laboratory (OCRL) at Stanford has continued to investigate future WDM Networks. In this paper, we describe two new Stanford experimental Networks, LEARN and HORNET. LEARN is a reconfigurable circuit switched WDM experimental network interconnecting the campuses of Sprint Advanced Technology Laboratories (An) in Burlingame, CA and Stanford OCRL in Stanford, CA. HORNET is a hybrid optoelectronic packet-switched WDM networking experiment designed to overcome the limitations of circuit switching. We discuss lessons learned from past Stanford projects and describe challenges to be met in the future concerning WDM Metropolitan Area Networks (MANs). Lastly, we describe the approach of Terabit Networks, Inc. to future WDM MANS. Terabit Networks is a new company building on Stanford technology to provide highly efficient high-bandwidth MAN solutions optimized for data traffic.

  • WDM Metropolitan Area network based on CSMA/CA packet switching
    Photonics Technology Letters IEEE, 1999
    Co-Authors: S M Gemelos, I M White, D Wonglumsom, T One, K Shrikhande, Leonid G. Kazovsky
    Abstract:

    The bursty nature of traffic in Metropolitan Area Networks results in underutilized and inefficient SONET Networks. The hybrid optoelectronic ring network (HORNET) is a network being developed at the Optical Communications Research Laboratory at Stanford University to address the problems of SONET transport in Metropolitan Area Networks (MAN's). HORNET performs packet switching using a fast-tunable wavelength transmitter, which hops to different wavelengths on a packet-by-packet basis. In this letter, we present simulation results which quantify the benefits of a wavelength tunable transmitter in a packet switched wavelength-division-multiplexed MAN. We show that a tunable transmitter is able to take advantage of imbalances in wavelength utilization, and provides a 45% improvement in packet latency characteristics. We also show that in order to maintain these benefits the tuning time of the transmitter cannot exceed 10% of the packet transmit time

I M White - One of the best experts on this subject based on the ideXlab platform.

  • Optical Metropolitan Area Networks
    OFC 2001. Optical Fiber Communication Conference and Exhibit. Technical Digest Postconference Edition (IEEE Cat. 01CH37171), 2001
    Co-Authors: Leonid G. Kazovsky, I M White, K Shrikhande, M.s. Rogge, D Wonglumsom
    Abstract:

    This paper discusses emerging issues in the development of future optical Metropolitan Area Networks and describes the pioneering research at Stanford University to address some of them. The optical MAN space is seeing great innovation in industry and research. Trends such as network-wide reconfiguration, Internet protocol (IP) over WDM transport, tunable OADMs and novel fibers will emerge at the networking and physical layers. Through our four MAN networking projects, the Stanford OCRL has made a significant contribution to this innovation, which will help build powerful and exciting optical MANs.

  • High capacity Metropolitan Area Networks for the next generation Internet
    Conference Record of Thirty-Fifth Asilomar Conference on Signals Systems and Computers (Cat.No.01CH37256), 2001
    Co-Authors: Leonid G. Kazovsky, I M White, K Shrikhande, M.s. Rogge
    Abstract:

    High capacity Metropolitan Area Networks must be developed to enable future generations of high-speed multimedia Internet applications and services. This paper discusses emerging issues in the development of future optical Metropolitan Area Networks and describes the pioneering research at Stanford University to address some of them. In particular, the HORNET project, which boasts a new architecture and novel subsystems for next generation high capacity Metropolitan Networks, is featured in this paper.

  • wdm Metropolitan Area network based on csma ca packet switching
    IEEE Photonics Technology Letters, 1999
    Co-Authors: S M Gemelos, I M White, D Wonglumsom, K Shrikhande, Leonid G. Kazovsky
    Abstract:

    The bursty nature of traffic in Metropolitan Area Networks results in underutilized and inefficient SONET Networks. The hybrid optoelectronic ring network (HORNET) is a network being developed at the Optical Communications Research Laboratory at Stanford University to address the problems of SONET transport in Metropolitan Area Networks (MAN's). HORNET performs packet switching using a fast-tunable wavelength transmitter, which hops to different wavelengths on a packet-by-packet basis. In this letter, we present simulation results which quantify the benefits of a wavelength tunable transmitter in a packet switched wavelength-division-multiplexed MAN. We show that a tunable transmitter is able to take advantage of imbalances in wavelength utilization, and provides a 45% improvement in packet latency characteristics. We also show that in order to maintain these benefits the tuning time of the transmitter cannot exceed 10% of the packet transmit time.

  • Future Optical Metropolitan Area Networks
    Optical Networking, 1999
    Co-Authors: S M Gemelos, I M White, D Wonglumsom, Leonid G. Kazovsky, K. Shrikhade, H. Huey
    Abstract:

    Building on well-known Stanford experimental WDM Networks — STARNET and CORD — the Optical Communications Research Laboratory (OCRL) at Stanford has continued to investigate future WDM Networks. In this paper, we describe two new Stanford experimental Networks, LEARN and HORNET. LEARN is a reconfigurable circuit switched WDM experimental network interconnecting the campuses of Sprint Advanced Technology Laboratories (An) in Burlingame, CA and Stanford OCRL in Stanford, CA. HORNET is a hybrid optoelectronic packet-switched WDM networking experiment designed to overcome the limitations of circuit switching. We discuss lessons learned from past Stanford projects and describe challenges to be met in the future concerning WDM Metropolitan Area Networks (MANs). Lastly, we describe the approach of Terabit Networks, Inc. to future WDM MANS. Terabit Networks is a new company building on Stanford technology to provide highly efficient high-bandwidth MAN solutions optimized for data traffic.

  • WDM Metropolitan Area network based on CSMA/CA packet switching
    Photonics Technology Letters IEEE, 1999
    Co-Authors: S M Gemelos, I M White, D Wonglumsom, T One, K Shrikhande, Leonid G. Kazovsky
    Abstract:

    The bursty nature of traffic in Metropolitan Area Networks results in underutilized and inefficient SONET Networks. The hybrid optoelectronic ring network (HORNET) is a network being developed at the Optical Communications Research Laboratory at Stanford University to address the problems of SONET transport in Metropolitan Area Networks (MAN's). HORNET performs packet switching using a fast-tunable wavelength transmitter, which hops to different wavelengths on a packet-by-packet basis. In this letter, we present simulation results which quantify the benefits of a wavelength tunable transmitter in a packet switched wavelength-division-multiplexed MAN. We show that a tunable transmitter is able to take advantage of imbalances in wavelength utilization, and provides a 45% improvement in packet latency characteristics. We also show that in order to maintain these benefits the tuning time of the transmitter cannot exceed 10% of the packet transmit time