Routing is a vital part of today’s communication networks and without it; data can never get past its originating subnet. It requires the implementation of a set of communication rules and guidelines called Routing Protocols. Each of these protocols has different features and performance capabilities, with different architectures and route processing algorithms. The data travels between local and wide area networks via different network topologies and is handled by different protocols within and outside different Autonomous Systems (AS). A secure and scalable communication platform relies on the selection of the right communication protocols. This plays an important role in the establishment and maintenance of successful communication grids, with the dynamic nature of the Internet connections and communication between different Autonomous Systems. This research paper presents a simulation as a comparative study of the Interior Gateway Routing Protocols (IGRP) in varying scenarios. Their performance was analysed and discussed by observing the generated traffic to identify the best combination of protocols for efficient data delivery. GNS3 network simulation software was used to create and implement the scenarios, and WireShark was used to capture the data packets

In this paper, we apply a non-standard finite difference method to find the numerical solution of dynamic nonlinear ordinary differential equation. The results of standard and non-standard finite difference schemes are also compared with each other. Some examples have been provided to show the ability of the method to show the  adequacy of non-standard method, the results of two methods are compared with the exact solutions.