Analysis of the impact of interior gateway protocols on the network performance

In an Autonomous System (AS), network devices communicate through interior gateway protocols. Because they have characteristics such as high throughput, flexibility, low overhead, scalability, easy configuration, and high bandwidth and CPU utilization, interior gateway protocols are among the routing protocols with the fastest growing usage in networking technologies. Despite the fact that convergence time is a critical issue in any of these routing protocols, The network's updated, comprehensive, and correct information is summarized during convergence time. Numerous studies have examined interior gateway protocols; however, only a small number of these studies have taken link failure into account while employing various network scenarios. This study makes a contribution in this field. (Graphical Network Simulator) GNS3 software simulates a ten-router setup to mimic a complex real-time enterprise-level network. Every protocol is put into practice using the intended topology. Methods/Statistical Analysis: The interior gateway protocols Routing Information Protocol (RIP), Open Shortest Path First (OSPF), Enhanced Interior Gateway Routing Protocol (EIGRP), and Intermediate System to Intermediate System (IS-IS) are analyzed in a complex enterprise-level network using GNS3 version 2.2.34 software. Results: End-to-end delay, jitter, and convergence time for each protocol implemented in the planned topology are examined. Each node has authentication capabilities to guarantee secure data delivery. Finding the best practical interior gateway routing protocol for various traffic scenarios is the study's main goal. In this paper, results are shown. The EIGRP protocol is superior in terms of end-to-end delay and convergence time after the results are tallied. While OSPF is supposed to have lower jitter than other Interior Gateway Protocols, in terms of convergence time, IS-IS outperforms OSPF. The results indicate that RIP protocols had the worst delays and convergence times.