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A Framework for a Bandwidth Based Network Performance Model for CS Students

D. Veal, G. Kohli, S. P. Maj J. Cooper

Edith Cowan University Curtin University of Technology Western Australia Western Australia d.veal@ecu.edu.au

Abstract

There are currently various methods by which network and internetwork performance can be addressed. Examples include simulation modeling and analytical modeling which often results in models that are highly complex and often mathematically based (e.g. queuing theory). The authors have developed a new model which is based upon simple formulae derived from an investigation of computer networks. This model provides a conceptual framework for performance analysis based upon bandwidth considerations from a constructivist perspective. The bandwidth centric model uses high level abstraction decoupled from the implementation details of the underlying technology. This paper represents an initial attempt to develop this theory further in the field of networking education and presents a description of some of our work to date. This paper also includes details of experiments undertaken to measure bandwidth and formulae derived and applied to the investigation of converging data streams.

Introduction

There are many ways of approaching computer networking education. Davies notes that: “Network courses are often based on one or more of the following areas: The OSI model; Performance analysis; and Network simulation” 1. The OSI model is a popular approach that is used extensively in the Cisco Networking Academy Program (CNAP) 2 and in other Cisco learning materials. With respect to simulation Davis describes the Optimized Network Engineering Tools (OPNET) system that that can model networks and sub-networks, individual nodes and stations and state transition models that defines a node 1. However, Davies gives no indication as to the accuracy of this simulation or of the limits of its application. The development and testing of networking simulations may depend upon student’s possessing knowledge and having suitable experience in computer programming languages that many networking students might not possess.

Performance analysis can use analytical based models that are often specialized in their area of application and may involve the use of complex mathematics which could be problematic for many computer networking students. Its advantages include Proceedings of the 2005 American Society for Engineering Education Annual Conference & Exposition Copyright  2005, American Society for Engineering Education

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Kohli, G., & Maj, S. P., & Veal, D. (2005, June), A Framework For A Bandwidth Based Network Performance Model For Cs Students Paper presented at 2005 Annual Conference, Portland, Oregon. 10.18260/1-2--14395