Performance comparison of different TCP versions designed for networks with high speeds and over long distances

TCP protocol is responsible for reliable transport and regulation of data flow from source to destination, through the Internet network. This paper presents the results of comparing performance of different versions of the TCP protocol, designed for the networks with high speeds and over long distances, which are obtained by simulations on NS-2 simulator. The paper demonstrates how the significant performance improvements in high-speed networks can be achieved, using some recent versions of the TCP protocol.