The Experts below are selected from a list of 246 Experts worldwide ranked by ideXlab platform

Daniel J. Blumenthal - One of the best experts on this subject based on the ideXlab platform.

Wei Wang - One of the best experts on this subject based on the ideXlab platform.

Nikos Pleros - One of the best experts on this subject based on the ideXlab platform.

  • a 1024 port optical uni and Multicast packet switch fabric
    Journal of Lightwave Technology, 2019
    Co-Authors: Miltiadis Moralispegios, Nikolaos Terzenidis, George Mourgiasalexandris, Konstantinos Vyrsokinos, Nikos Pleros
    Abstract:

    Novel Data Center (DC) architectures based on resource disaggregation hold the potential to increase the resource utilization at a reduced energy and cost envelope, imposing, however, significant challenges in the underlying DC network infrastructure that has to provide high-radix and high-bandwidth connectivity, while maintaining sub-μs latency. At the same time, the explosive growth of AI applications has transformed the traffic profiles on the majority of DC workloads calling for support of advanced network functionalities, such as Multicasting. In this direction, we scale-up the Hipoλaos optical packet switch architecture to a thousand-port layout, at the same time upgrading its functionality to allow latency-free intra-tray Multicasting. The feasibility of a 10.24-Tb/s capacity switch fabric with a 10-Gb/s line rate in a 1024-port configuration, with four-packet buffering capacity is experimentally demonstrated, revealing error-free performance with <3.4-dB power penalty. Optical Multicasting to up-to five nodes is also experimentally validated at 10 Gb/s, with a power penalty variation of less than 1 dB between the different output ports, while Multicast Operation across the whole required spectral range of a 1024-port switch is investigated, utilizing pairs of wavelengths with different channel spacing. Network-level analysis of the 1024-port Hipoλaos switch revealed sub-μs p90-latency and ∼85% throughput, for the unicast case, when utilizing a two-packet-buffer design. Finally, the simulation model was extended to support the Hipoλaos Multicast friendly layout, revealing up to 4250% throughput improvement, as compared to the conventional layout, while maintaining sub-μs latency.

  • Multicasting in a High-Port Sub- $\mu$ sec Latency Hipo $\lambda$ aos Optical Packet Switch
    IEEE Photonics Technology Letters, 2018
    Co-Authors: Nikolaos Terzenidis, Konstantinos Vyrsokinos, Miltiadis Moralis-pegios, George Mourgias-alexandris, Nikos Pleros
    Abstract:

    We demonstrate a Hipoλaos optical packet switch (OPS) configuration that can support optical data Multicasting in a sub-μsec 256-port layout. The proposed Multicast OPS relies on the low-latency and high-port Hipoλaos OPS architecture, extending its capabilities from unito Multicast Operation through simple modifications at its egress wavelength-routing stage. It exploits the WDM cyclic properties of the arrayed waveguide grating router stage in conjunction with multi-wavelength conversion (WC) in semiconductor optical amplifier-Mach-Zehnder interferometer (SOA-MZI) toward scaling from a unito a Multicast OPS design, with the level of multi-wavelength WC defining the Multicast degree. Optical Multicasting up to five nodes is experimentally demonstrated at 10 Gb/s, revealing error-free Operation at 10 -9 with less than 2-dB power penalty compared with the unicast Operation. The broadband Operational characteristics of the Multicast Operation have been also investigated at 10 Gb/s, utilizing pairs of wavelengths with different channel spacing and validating the Multicast credentials of the switch across all the necessary wavelength channels for a 256-port configuration. Finally, a mixed traffic scenario involving both unicast and Multicast optical traffic is demonstrated at 10 Gb/s, revealing error-free performance for all cases, with a

  • ECOC - Multicasting in a 256-Port Sub- $\mu \text{sec}$ Latency $\text{Hipo}\lambda\text{aos}$ Switch Architecture for Disaggregated DataCenters
    2018 European Conference on Optical Communication (ECOC), 2018
    Co-Authors: Miltiadis Moralis-pegios, Nikolaos Terzenidis, George Mourgias-alexandris, Konstantinos Vyrsoklnos, Nikos Pleros
    Abstract:

    We demonstrate experimentally a Multicast enabling $\text{Hipo}\lambda\text{aos}$ optical packet switch in a 256×256 port configuration with 4 packet optical buffering capacity for 10 Gb/s data, Multicasting up to 5 receiver nodes along with a broadband Multicast Operation analysis.

Charles E Perkins - One of the best experts on this subject based on the ideXlab platform.

  • Multicast Operation of the ad hoc on demand distance vector routing protocol
    ACM IEEE International Conference on Mobile Computing and Networking, 1999
    Co-Authors: E M Royer, Charles E Perkins
    Abstract:

    An ad-hoc network is the cooperative engagement of a collection of (typically wireless) mobile nodes without the required intervention of any centralized access point or existing infrastructure. To provide optimal communication ability, a routing protocol for such a dynamic self-starting network must be capable of unicast, broadcast, and Multicast. In this paper we extend Ad-hoc On-Demand Distance Vector Routing (AODV), an algorithm for the Operation of such ad-hoc networks, to offer novel Multicast capabilities which follow naturally from the way AODV establishes unicast routes. AODV builds Multicast trees as needed (i.e., on-demand) to connect Multicast group members. Control of the Multicast tree is distributed so that there is no single point of failure. AODV provides loop-free routes for both unicast and Multicast, even while repairing broken links. We include an evaluation methodology and simulation results to validate the correct and efficient Operation of the AODV algorithm.

  • MobiCom - Multicast Operation of the ad-hoc on-demand distance vector routing protocol
    Proceedings of the 5th annual ACM IEEE international conference on Mobile computing and networking - MobiCom '99, 1999
    Co-Authors: E M Royer, Charles E Perkins
    Abstract:

    An ad-hoc network is the cooperative engagement of a collection of (typically wireless) mobile nodes without the required intervention of any centralized access point or existing infrastructure. To provide optimal communication ability, a routing protocol for such a dynamic self-starting network must be capable of unicast, broadcast, and Multicast. In this paper we extend Ad-hoc On-Demand Distance Vector Routing (AODV), an algorithm for the Operation of such ad-hoc networks, to offer novel Multicast capabilities which follow naturally from the way AODV establishes unicast routes. AODV builds Multicast trees as needed (i.e., on-demand) to connect Multicast group members. Control of the Multicast tree is distributed so that there is no single point of failure. AODV provides loop-free routes for both unicast and Multicast, even while repairing broken links. We include an evaluation methodology and simulation results to validate the correct and efficient Operation of the AODV algorithm.

L. Rau - One of the best experts on this subject based on the ideXlab platform.