Comparision of SACK TCP performance with and without LSS for high speed network

TCP transports layer protocol. Transmission control Protocol (TCP), is a connection-oriented, reliable protocol that is responsible for process-to-process delivery of packet, part of message, from one process to another.In recent years, the demand for network bandwidth is growing due to increase in global population of internet and verity of application. Optical data communication has been acknowledged as the best solution to meet the bandwidth requirement of users. Optical fiber Network give higher throughput and bandwidth but when large network (like, internet´s connection undersea over the world) at a tine same congestion problem as copper wire. To solve such problem require improving TCP protocol. LSS is an optional modification for SACK TCP´s slow-start with large congestion windows. In current SACK TCP if you use large congestion window at time large number of packet will be dropped in one round-trip time. Limited Slow-Start as an optional mechanism for limiting the number of segments by which the congestion window is increased for one window of data during slow-start, in order to improve performance for SACK TCP connections with large congestion windows. So, in this paper attempts to study, simulate, analyze and compare SACK TCP performance with and without LSS for different high speed network condition.