ATMLib - uma biblioteca de classes para a construção de simuladores de redes ATM: proposta e implementação.

Abstract

The growing demand for communication systems which are able to deal with different media over high speed links in an integrated fashion has lead the scientific and industrial community to choose A TM as the transfer mode for these networks. Despite of all efforts in consolidating this technology, many aspects still to be improved in order to use ATM. Evaluation tools, which are suficiently flexible, are need to evaluate the performance of these networks as modifications or new proposals are introduced. Object oriented paradigm and Java programming language are very useful in developing such tools. In this context, we propose and implement a library supporting the development of A TM network simulators in a fast, efficient and economical way. Classes from this library model the basic elements of A TM networks. These classes may be extended in order to agregate future new funcionalities. However, it's important to emphasize that software library are complex sistems and they must be developed based on Software Engineering principles. ATMLib was developed through traditional life-cycle phases: Requirements Especification, Analysis, Project, Implementation and Tests. UML (Unified Modelling Language) was used in order to describe the problem domain and to acquire the solution for it. Results from theses phases were implemented using the Java programming language and tested using a test tool called J Unit. Test results showed that ATMLib behaves as expected.