The broad objective of the research paper is to evaluate and compare the performance of two protocol stacks (IPv4 and IPv6) in OMNeT++ in terms of various parameters that have to be analyzed when the data is being transmitted from one client to another or to a server over a wired network. In this we have designed wired networks on basis of IPv4 and IPv6 protocols in OMNeT++, which is a network simulation platform. Simulation techniques allow us to analyze the behavior of networking protocols depending on available computing power for running the simulation experiment. The network comprises of various components like servers, routers, clients, etc. The purpose of this paper is to assess basic throughput, packet loss, latency, etc.