ABSTRACT
The industry has advocated and recognized Asynchronous Transfer Mechanism (ATM) as the transfer mode for Broadband networks. Currently, a lot of effort is being put in both in the industry and in academia to design and build high-speed ATM networks for businesses. These networks are designed to serve both real-time and non-real-time applications with varying levels of quality of service (QoS). Because the resources available to support an application’s QOS requirements are usually restricted, the necessity to dynamically assign resources in a fair manner becomes unavoidable. An evaluation of the performance of an enterprise-wide network with leased trunks as its backbone is carried out in this work. When the leased trunk was loaded with homogeneous and heterogeneous traffic, its performance was examined. The assessment was carried out to identify the actual impact of traffic overload on resources such as trunk transmission capacity and buffer. The goal is to determine the optimal loading level as well as the QoS parameter values that go with it. The findings were examined using Microsoft Excel after a typical network was adopted, designed, and simulated in the MATLAB environment using the Simulink tool.
CHAPTER ONE
INTRODUCTION
BACKGROUND OF THE STUDY
Enterprise wide networks, often known as cooperative networks, are privately owned and operated communication networks. This type of network provides a communication platform for an organization’s geographically dispersed sites (offices). An organization’s various offices could be located within a city, a state, a country, or all over the world. A computer network constructed by a firm to interconnect its multiple company sites (such as production sites, offices, and shops) in order to share computer resources is known as an enterprise private network.’ Also known as an enterprise wide area network (WAN), an enterprise wide area network (WAN) is a corporate network that connects geographically dispersed users areas located all over the world. The enterprise wide area network (WAN) connects LANs in different locations. The networking equipment in the LANs is frequently owned and managed by the company in issue. However, service providers typically connect LANs using leased trunks, giving access to geographically scattered sites [1, 2].
We give a brief overview of the current communication environment, including the characterization of the communication services to be offered, as well as the features and attributes of the underlying communication network that is meant to support the preceding services.
HISTORICAL BACKGROUND
A communication system’s primary function is to transfer data between two or more devices. Telecommunications has experienced unprecedented and explosive growth in terms of services delivered and technology over the years. Because of the wide variety of services that can be imagined, the key parameters of telecommunication services are difficult to identify. This is essentially the reason for the technology environment’s rapid change. In fact, a person living in the 1960s, who had to deal with the only provision of basic telephone service and the initial low-speed data services, could classify the basic aspects of these two services with relative ease.
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