Opnet Based simulation for route redistribution in EIGRP, BGP and OSPF network protocols

Abstract

Route redistribution (RR) has become an integral part of IP network design as the result of a growing need for disseminating certain routes across routing protocol boundaries. While RR is widely used and resembles BGP in several non-trivial aspects, surprisingly, the safety of RR has not been systematically studied much by the networking community. This paper presents the study of the model in opnet for understanding the route redistribution in a network comprising of different AS. The behaviour of routing protocols EIGRP, OSPF, BGP is studied. The performance of each routing protocol is different from each other. Each of them has different architecture, adaptability, routing algorithms, processing delays and convergence capabilities. Among different routing protocols, EIGRP and OSPF have been considered as the pre-eminent routing protocols for the real-time application. To select a right protocol, several parameters such as network convergence time, bandwidth, scalability are considered. This paper reports a simulation based study between EIGRP, BGP and OSPF. In order to evaluate the performance of EIGRP and BGP three network scenarios are configured viz route redistribution, FFC with route redistribution and to fasten the BGP process the header changes are done.