Presentations

• Network Convergence: Looking Forward
  Networking Research Challenges Workshop
  September 28-30, 2008
  Seattle, Washington
  slides
  Author:
  Tom Lehman, (USC/ISI)
  

  Abstract:
  This talk presents the status of Multi-Layer, Multi-Domain Networking and a vision for how networks and network services may converge over time.

• Hybrid Network Architectures: A Forward-Looking Vision
  Presentation at January 08 ESCC/Joint Techs
  slides
  
  Authors:
  Tom Lehman, (USC/ISI)
  Xi Yang, (USC/ISI)
  Chin Guok, Energy Sciences Network (ESnet)
  John Vollbrecht, Internet2
  Andrew Lake, Internet2
  Nasir Ghani, Tennessee Tech University
  Nagesware Rao, Oak Ridge National Laboratory
  

  Abstract:
  This talk presents the status of an effort to define a generic control plane architecture for Multi-Layer Hybrid Networks. This includes specification of the key properties of the topology definition and exchange, multi-domain path computation, and signaling. ESNet SDN (Science Data Network) and Internet2 DCN (Dynamic Circuit Network) are reviewed as two early instantiations of this architecture. Plans for advanced scheduling, incorporation of WDM layer into the dynamic provisioning, network "virtualization," and use of OPNET modeling and/or simulation to assist with detailed design and performance modeling are also presented. This work is part of the DOE Office of Science-funded "Hybrid Multi-Layer Network Control for Emerging Cyber-Infrastructure" project.

• Hybrid Network Control Plane Interoperation Between Internet2 and ESnet
  Presentation at July 07 ESCC/Joint Techs
  slides
  
  Authors:
  Tom Lehman, (USC/ISI)
  Chin Guok, Energy Sciences Network (ESnet)
  John Vollbrecht, Internet2
  Andrew Lake, Internet2
  

  Abstract:
  An important capability for hybrid networks will be the ability to dynamically set up paths on a multi-domain, multi-technology basis. This presentation will provide an update on a joint effort between Internet2 and ESnet to develop an Inter-Domain Controller which will enable this type of multi-domain provisioning. This includes combining technologies developed as part of the OSCARS and DRAGON projects to allow Internet2 HOPI/DCS and ESnet IP/SDN networks to interoperate. Status of our efforts to complete similar interoperability testing with GEANT will also be presented.

• Heterogeneous Data Plane Testing on USN, ESnet, and Internet2 Networks
  Presentation at July 07 ESCC/Joint Techs
  slides
  
  Authors:
  Nasir Ghani, (Tennessee Tech University)
  Chin Guok, Energy Sciences Network (ESnet)
  Tom Lehman, (USC/ISI)
  John Moore, ITEC - North Carolina
  Nagesware Rao, Oak Ridge National Laboratory
  John Vollbrecht, Internet2
  

  Abstract:
  Multi-layer, multi-domain hybrid network architectures present several new issues due to the heterogeneous nature of the data plane. These networks provide the ability to establish paths (circuits) at various technology levels such as lambda, SONET, Ethernet, and router MPLS. This talk presents an overview of an effort to evaluate and characterize data paths constructed at the various technology layers as well as data paths constructed via the concatenation of multiple technology-diverse segments. The approach is to combine data collection with advanced simulation and modeling capabilities to predict the performance of existing hybrid networks and also assist in the design of alternative hybrid network architectures. This work is utilizing the infrastructures of UltraScience Net, ESnet, and Internet2 for data collection and as the basis for the analysis work.

• Multi-Layer, Multi-Domain Hybrid Network Interoperation and Performance
  Presentation at February 07 ESCC/Joint Techs
  slides
  
  Authors:
  Tom Lehman, (USC/ISI)
  Nasir Ghani, (Tennessee Tech University)
  Chin Guok, Energy Sciences Network (ESnet)
  Nagesware Rao, Oak Ridge National Laboratory
  John Vollbrecht, Internet2
  John Moore, ITEC - North Carolina
  

  Abstract:
  Multi-Layer, Multi-Domain Hybrid Network architectures present several new data plane and control plane issues which require some basic analysis and design work. At the data plane level, hybrid networks provide the ability to establish paths (circuits) at various technology levels such as Lambda, SONET, Ethernet, and Router MPLS. There is currently little data to inform us as to the relative performance of data paths constructed at the various technology layers. Likewise, little is known about the performance of a data path constructed via the concatenation of multiple technology-diverse segments. At the control plane layer, there are several important issues relative to provisioning paths across multiple domains, each which may be operating at a different technology layer. This talk presents the status of a project to characterize and quantify these unique features of multi-dimensional hybrid networks. The approach is to combine data collection with advanced simulation and modeling capabilities to predict the performance of existing hybrid networks and also assist in the design of alternative hybrid network architectures.

-- TomLehman - 06 May 2008