Abstract: One of the vital practice in the internet is routing of data packets. A routing protocol specifies the method of communication among routers used in the inter connection of networks. A routing table in the memory of a router keeps track of routes to particular network destination. There are varios routing protocols which have application on the internet like Routing Information Protocol (RIPv2), Open Shortest Path First (OSPF), Interior Gateway Routing Protocol (IGRP), Enhanced Interior Gateway Routing Protocol (EIGRP), Intermediate System To Intermediate System (IS-IS), etc. Every single protocol has its unique way of packet routing. This paper presents a simple relative study of RIP, OSPF, EIGRP and IS-IS dynamic routing protocols. The Routing Information Protocol (RIP) comes under the distance vector algorithm while Enhanced Interior Gateway Routing Protocol (EIGRP) is an advanced distance-vector routing protocol, the Open Shortest Path First Protocol (OSPF) is a link state routing algorithm. Intermediate System to Intermediate System (IS-IS) regulates the superlative route for information through a packet-switched network. The crucial objective of this research work is to illustrate the comparitive performance analysis of dynamic routing protocols and redistribution among the protocols. Cisco routers were used in our simulated network topology.

Keywords: Routing Protocols, Topology, Convergence, Comparison.