A high fidelity ATM traffic and network simulator

Abstract

The design of an ATM Traffic and Network (ATM-TN) simulator which characterizes cell level network behavior is presented. The simulator incorporates three classes of ATM traffic source models: an aggregate ethernet model, an MPEG model and a World Wide Webb transactions model. Six classes of ATM switch architectures ate modeled including output buffered, shared memory buf€ered and cross bar switch models, and then multistage switches which can be built from these three basic models.The ATM-TN simulator can be used to charxterize arbitrary ATM networks with dynamic multimedia traffic loads. Call set up and tear down via ATh4 s i m n g is implemented in addition to the various types of cell traffic streams generated by voice, video and data. The simulator is built on a simple, efficient simulation language called SimKit which is capable of support& both fast sequential and parallel execution. Parallel execution is supported using WarpKit, an optimistically synchronized kemel that is aimed at shared memory multiprocessor platforms such as the Silicon Graphics Powerchallenge and Sun Sparc 1000 series machines.The paper outlines general requirements for ATM W i c and network simulation, presents an ATM-TN simulator architecture, describes its major components and discusses the major issues associated with cell level ATM modeling and simulation.

Synthetic Traffic Generation Techniques For ATM Network Simulations

“…; comparative evaluation of algorithms for Connection Admission Control (CAC), such as those proposed by Gibbens-Hunt [11] and Norros [12]). What is desired in our ATM network simulator [13] is a traffic source model for which the user can easily set m (the mean bit rate, in bits per second (bps)), a (the Norros variance coefficient, in bit-sec), and H (the Hurst parameter), for such performance studies. This paper reports on such a modeling approach for bursty LRD traffic, which is similar to the modeling approach proposed in [14].…”

Modeling and Parallel Simulation of Large ATM Switch Fabrics

“…Simulation is an essential tool in creating such a virtual environment for the development, testing, and performance evaluation of communication systems [1]. Sequential simulation of large and complex systems, however, is often computation intensive and requires large computer memory.…”

The performance of TCP over ATM on lossy ADSL networks

“…Our simulation experiments are built upon the ATM-TN simulator environment, which has been used extensively in prior work [27]. A description of the TCP model used in ATM-TN appears in [ 121, along with its validation against the simulation results from [22].…”