Computer Network Modeling and Analysis Using XML - Descriptions Technical Report

This article examines the supporting mathematical methods for modeling and simulation of computer networks. The authors discuss approaches to composition of analysis-able mathematical models for computer networks. The DFG (Dichromatic Functional Graph) is investigated as a relevant theoretical basis. Furthermore, the approaches to modeling of elements and transmission media on the basis of event-driven algorithms or queueing networks are considered. An organization of an object-oriented ESM (Equivalent element Substitution Model) is proposed. All concepts mentioned above are encapsulated via a retrieved data structure for computer networks – the informational model NDM (Network Design Model). They can be described via NDML (Network Design Markup Language), a special XML-based project language, also sketched in this paper. The discussed approaches are implemented in CANDY (Computer-Aided Network Design utilitY).