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REAL

Description

REAL is a network simulator originally intended for studying the dynamic behaviour of flow and congestion control schemes in packet-switched data networks. It provides users with a way of specifying such networks and to simulate their behavior. It provides around 30 modules (written in C) that exactly emulate the actions of several well-known flow control protocols (such as TCP), and 5 research scheduling disciplines (such as Fair Queueing and Hierarchical Round Robin). The modular design of the system allows new modules to be added to the system with little effort. Source code is provided so that interested users can modify the simulator to their own purposes. Online documentation and source code are part of the distribution.

The simulator takes as input a scenario, which is a description of network topology, protocols, workload and control parameters. It produces as output statistics such as the number of packets sent by each source of data, the queueing delay at each queueing point, and the number of dropped and retransmitted packets. This release includes a graphical user interface (GUI) written in java by Hani T. Jamjoom at Cornell University.The GUI allows users to quickly build simulation scenarios with a point-and-click interface. For more details, please see the RealEdit home page.

The GUI also allows scenarios to be simulated on a server generously loaned to Cornell University by Digital Inc. This makes it unnecessary for users to download, compile and build the simulator in order to run simulations. Instead, the scenarios, once created, are shipped to the server for execution, and the results are shipped back to the GUI for display.

Title::	Download REAL
Publisher:	Cornell Univ.
Review:	Not Available

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