Abstract
Asynchronous Transfer Mode (ATM) has been recommended and has been accepted by industry as the transfer mode for Broadband network. Currently, large scale effort has been undertaken both in the industry and academic environment to design and build high speed ATM networks for corporate bodies. These networks are meant to support both real-time and non-real time applications with different quality of service (QoS) requirements. The resources to support the applications QoS requirements are typically limited and therefore the need to dynamically allocate resource in a fair manner becomes inevitable. In this work, an evaluation is carried out on the performance of enterprise-wide network that its backbone is based on leased trunk. The performance of the leased trunk is evaluated when loaded with homogeneous and heterogeneous traffic. The evaluation is carried out in order to determine the exact effect of traffic overload on resources-trunk transmission capacity and buffer. The aim is to define the optimum loading level and the associated QoS parameter values. A typical network was adopted, modeled and simulated in MATLAB environment by using Simulink tool and the results obtained were analyzed by using Microsoft Excel.
Highlights
Telecommunication networks whose fundamental purpose is to ensure the transfer of information from one point to another with high fidelity, has witnessed unprecedented and explosive growth over the years in the areaHow to cite this paper: Augustine, A., Chukwudi, I. and Cosmas, A. (2015) Performance Evaluation of Enterprise-Wide Network that It’s Backbone Is Based on Leased Trunk
asynchronous transfer mode (ATM) which is an outgrowth of effort to develop broadband integrated service digital network (ISDN) capability provides a transport mechanism that allows digital data to be effectively transmitted over high speed links
The single server was used because ATM multiplexer was used for providing statistical multiplexing service for the BISDN service supported by the network and carried via a leased trunk
Summary
Telecommunication networks whose fundamental purpose is to ensure the transfer of information from one point to another with high fidelity, has witnessed unprecedented and explosive growth over the years in the area. ATM based enterprise networks are cooperated network whose access nodes are ATM switches These nodes provide highly effective congestion control and high flexibility in allocating bandwidth [3]. Many large national and multinational enterprises choose to install and run their own private integrated voice and data networks for all enterprise-wide communications [7] Such networks comprise an intelligent switching node at each site and these are interconnected by high bit rate digital leased circuits to form an enterprise-wide network. The switching nodes are based on intelligent multiplexers with the bandwidth of the leased circuits assigned in a fixed way—N x 64 kbps—to meet the particular inter-site voice (PABX), and data (terminal and LAN) traffic. The evaluation is carried out in order to determine the exact effect of traffic overload on resource-trunk transmission capacity and buffer
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