Now showing items 1-20 of 35

    • A Generic Framework for Parallelization of Network Simulations 

      Riley, George F.; Fujimoto, Richard M.; Ammar, Mostafa H. (Mostafa Hamed) (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, Inc., New York, 1999-10)
      Discrete event simulation is widely used within the networking community for purposes such as demonstrating the validity of network protocols and architectures. Depending on the level of detail modeled within the simulation, ...
    • Stateless Routing in Network Simulations 

      Riley, George F.; Ammar, Mostafa H. (Mostafa Hamed); Fujimoto, Richard M. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, Inc., New York, 2000)
      The memory resources required by network simulations can grow quadratically with size of the simulated network. In simulations that use routing tables at each node to perform per-hop packet forwarding, the storage ...
    • Network Aware Time Management and Event Distribution 

      Riley, George F.; Fujimoto, Richard M.; Ammar, Mostafa H. (Mostafa Hamed) (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, Inc., New York, 2000-05)
      In this paper we discuss new synchronization algorithms for Parallel and Distributed Discrete Event Simulations (PDES) which exploit the capabilities and behavior of the underlying communications network. Previous work ...
    • Split Protocol Stack Network Simulations Using the Dynamic Simulation Backplane 

      Xu, Donghua; Riley, George F.; Ammar, Mostafa H. (Mostafa Hamed); Fujimoto, Richard M. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, Inc., New York, 2001)
      We introduce and discuss a methodology for heterogeneous simulations of computer networks using the dynamic simulation backplane. This methodology allows for exchanging of protocol information between simulators across ...
    • Efficient Routing Using NIx-Vectors 

      Riley, George F.; Ammar, Mostafa H. (Mostafa Hamed); Zegura, Ellen W. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, Inc., New York, 2001)
      We introduce the concept of Neighbor-Index Vector (NIx-Vector) routing which gives efficient and consistent routing of packets in Internet routers. A NIx-Vector is a compact representation of a routing path, which is small ...
    • Distributed Network Simulations Using the Dynamic Simulation Backplane 

      Riley, George F.; Ammar, Mostafa H. (Mostafa Hamed); Fujimoto, Richard M.; Xu, Donghua; Perumalla, Kalyan S. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, Inc., New York, 2001-04)
      Presents an approach for creating distributed, component-based simulations of communication networks by interconnecting models of sub-networks drawn from different network simulation packages. This approach supports the ...
    • Experiences Parallelizing a Commercial Network Simulator 

      Wu, Hao; Fujimoto, Richard M.; Riley, George F. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, Inc., New York, 2001-12)
      Most current approaches of parallel simulation focus on building new parallel simulation engines that require the development of new models and software. An alternate, emerging approach is to extend sequential simulators ...
    • Experiences Applying Parallel and Interoperable Network Simulation Techniques in On-line Simulations of Military Networks 

      Perumalla, Kalyan S.; Fujimoto, Richard M.; McLean, Thom; Riley, George F. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, Inc., New York, 2002)
      We present a case study in which we apply parallel simulation methods and interoperability techniques to network simulations for simulation-based on-line control of military communication networks. The on-line simulations ...
    • IPA for Loss Volume and Buffer Workload in Tandem SFM 

      Wardi, Yorai; Riley, George F. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, Inc., New York, 2002)
      This paper considers congestion-related performance metrics in tandem networks of Stochastic Fluid Models (SFMs), and derives their IPA gradient estimators with respect to buffer sizes. Specifically, the performance ...
    • Integrated Fluid and Packet Network Simulations 

      Riley, George F.; Jaafar, Talal Mohamed; Fujimoto, Richard M. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, Inc., New York, 2002-10)
      A number of methods exist that can be used to create simulation models for measuring the performance of computer networks. The most commonly used method is packet level simulation, which models the detailed behavior of ...
    • Exploiting the Predictability of TCP’s Steady-state Behavior to Speed Up Network Simulation 

      He, Qi; Ammar, Mostafa H. (Mostafa Hamed); Riley, George F.; Fujimoto, Richard M. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, Inc., New York, 2002-10)
      In discrete-event network simulation, a significant portion of resources and computation are dedicated to the creation and processing of packet transmission events. For large-scale network simulations with a large number ...
    • On Standardized Network Topologies For Network Resesrch 

      Riley, George F. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, Inc., New York, 2002-12)
      Simulation has become the evaluation method of choice for many areas of computer networking research. When designing new or revised transport protocols, queuing methods, routing protocols, (just to name a few), a common ...
    • Intrusion Detection Testing and Benchmarking Methodologies 

      Athanasiades, Nicholas; Abler, Randal T.; Levine, John G. (John Glenn); Owen, Henry L., III; Riley, George F. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, Inc., New York, 2003-03)
      The ad-hoc methodology that is prevalent in today’s testing and evaluation of network intrusion detection algorithms and systems makes it difficult to compare different algorithms and approaches. After conducting a ...
    • University Methodology for Internetworking Principles and Design Projects 

      Abler, Randal T.; Owen, Henry L., III; Riley, George F. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, Inc., New York, 2003-05)
      An undergraduate engineering internetworking learning environment that presents both internetworking principles and laboratory experimentation is described. The learning environment uses the source code availability of ...
    • Scalable RTI-Based Parallel Simulation of Networks 

      Perumalla, Kalyan S.; Park, Alfred; Fujimoto, Richard M.; Riley, George F. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, Inc., New York, 2003-06)
      Federated simulation interfaces such as the High Level Architecture (HLA) were designed for interoperability, and as such are not traditionally associated with high performance computing. In this paper, we present ...
    • Enabling Large-Scale Multicast Simulation by Reducing Memory Requirements 

      Xu, Donghua; Riley, George F.; Ammar, Mostafa H. (Mostafa Hamed); Fujimoto, Richard M. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, Inc., New York, 2003-06)
      The simulation of large–scale multicast networks often requires a significant amount of memory that can easily exceed the capacity of current computers, both because of the inherently large amount of state necessary to ...
    • Creating Realistic BGP Models 

      Dimitropoulos, Christos Xenofontas A.; Riley, George F. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, Inc., New York, 2003-10)
      Modeling the Internet infrastructure is a challenging endeavor. Complex interactions between protocols, increasing traffic volumes and the irregular structure of the Internet lead to demanding requirements for the simulation ...
    • SPADES - A Distributed Agent Simulation Environment With Software-in-the-Loop Execution 

      Riley, Patrick F.; Riley, George F. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, Inc., New York, 2003-12)
      Simulations are used extensively for studying artificial intelligence. However, the simulation technology in use by and designed for the artificial intelligence community often fails to take advantage of much of the ...
    • Space–Parallel Network Simulations Using Ghosts 

      Riley, George F.; Jaafar, Talal Mohamed; Fujimoto, Richard M.; Ammar, Mostafa H. (Mostafa Hamed) (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, Inc., New York, 2004-05)
      We discuss an approach for creating a federated network simulation that eases the burdens on the simulator user that typically arise from more traditional methods for defining space-parallel simulations. Previous approaches ...
    • Large–Scale Simulation Models of BGP 

      Dimitropoulos, Christos Xenofontas A.; Riley, George F. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, Inc., New York, 2004-10)
      The complex nature of the Border Gateway Protocol (BGP) is not amenable to analytical modeling, and thus simulation–based analysis methods are needed to understand its behavior. To this end, we investigate techniques that ...