The prime motive of this project is to demonstrate how routers communicate two different routing protocols. A Network topology is taken and routes from one routing protocol are being sent into the other through redistribution. For instance we have taken OSPF to EIGRP in our scenario. Also we know that IP addresses are limited, in order to avoid the wastage of these addresses we are using VLSM and CIDR. OSPF is link state protocol and it calculates metric based on cost while EIGRP is distance vector routing protocol and it calculates Composite cost metric © Research India Publications.