A Comparative Analysis of Interior Gateway Protocols in Large-Scale Enterprise Topologies

Interior gateway protocols (IGPs) have gained popularity in networking technologies due to their capacity to enable standardized and flexible communication among these algorithms. In autonomous systems (AS), network devices communicate with one another via IGPs. This work presents a fresh investigation into the performance of inner gateway protocols in large-scale enterprise topologies. Also, the experiment lab using GNS3 simulation has been conducted to evaluate and examine the performance of RIP, EIGRP, OSPF, and IS-IS, taking into account convergence time, latency, and jitter in large-scale network topology. The work has used a tri-connected architecture, with ten (10) routers connected via three serial connections and fifteen (15) network subnets, resulting in thirty (30) different paths for routing data packets for each tested routing technique. End-to-end delay, jitter, and convergence time are three measurement measures used to investigate network topologies. The experiment's outcomes have revealed that EIGRP has superior delay and convergence time performance. Furthermore, the results have been showed that IS-IS outperformed OSPF in terms of convergence time. Overall, this work improves the field by giving a grand average computation approach for measuring the jitter metric, which has been compared to a standard method. The method has been thoroughly explored utilizing derivate statistical equations and associated pseudo code.