Abstract: This paper analysis the configuration of Enhanced Interior Gateway Routing Protocol (EIGRP) using the Virtual Private Network (VPN). The VPN enables service provider to implement point-to-point link connectivity between the customer locations. In this paper, the Hub and the Spoke topology are used to send traffic thus it provides safe and encrypted connection. They optimize their performance by taking automatic routing decisions for data transmission between the sites and enhance end to end connectivity. The proposed EIGRP uses the Diffusing Update Algorithm thus it takes place 90 milliseconds to achieve the convergence time. The proposed method ensures packet delay and does not have boundary decisions between routers. The main advantage of the proposed method is that the efficiency of the EIGRP is too better than the OSPF proposed. The GNS3 software result shows that EIGRP provides better performance than the OSPF protocol by their administrative distance, convergence time and metric calculations.

Keywords: Routing Information Protocol (RIP), Routing Protocol, GNS 3 software tool, Open Short Path First (OSPF), Enhanced Interior Gateway Routing Protocol (EIGRP).