Maya: a Multi-Paradigm Network Modeling Framework
Proceedings of the seventeenth workshop on Parallel and distributed simulation
Improving Scalability of Network Emulation through Parallelism and Abstraction
ANSS '05 Proceedings of the 38th annual Symposium on Simulation
Advanced concepts in large-scale network simulation
WSC '05 Proceedings of the 37th conference on Winter simulation
Performance of a GridFTP overlay network
Future Generation Computer Systems
Toward Scalable Routing Experiments with Real-Time Network Simulation
Proceedings of the 22nd Workshop on Principles of Advanced and Distributed Simulation
Hybrid Testbed Enabling Run-Time Operations for Wireless Applications
Proceedings of the 22nd Workshop on Principles of Advanced and Distributed Simulation
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Testing distributed applications over the Internet is fraught with problems: due to the inability to control a wide area network consistent, reproducible performance experiments are not possible. Here a system is described that uses a parallel discrete event simulator that can act as a real-time network emulator. Real Internet Protocol (IP) traffic generated by application programs running on user workstations can interact with modeled traffic in the emulator, thus providing a controlled test environment for distributed applications. Parallel execution enables the emulator to simulate large virtual networks and to model traffic interactions that could not be done in real-time sequentially.This paper gives an overview of the emulator and explores the various external data routing methods that the emulator supports. These routing methods allow the emulator to be operated in shared environments with certain constraints, as well as in dedicated test environments. Preliminary performance results are included.