Congestion control technique TCP-Tahoe

Zahtjevi krajnjih korisnika za velikim prijenosnim brzinama u paketskim mrežama u posljednje su vrijeme sve veći, no brzina prijenosa podataka, govora i videa je u velikoj mjeri uvjetovana mehanizmom kontrole zagušenja. U ovom radu opisani su principi rada protokola TCP i mehanizma kontrole zagušenja protokola TCP-Tahoe. U mrežnom simulatoru NS2 provedene su simulacije komunikacije protokolom TCP-Tahoe u mrežama s raznim ograničenjima te analiziran utjecaj tih ograničenja na performanse protokola. Promatrana je komunikacija s jednim prometnim tokom te s više prometnih tokova uz mjerenje propusnosti mreže.In recent times, end user demands for high transfer speeds in packet networks are increasing, and video, voice and file transfer speeds are greatly determined by congestion control. This thesis describes the principles behind TCP and the congestion control mechanism of TCP-Tahoe. Using the NS2 network simulator, we perform simulations of TCP-Tahoe in networks with varying types of limitations, in an effort to understand the influence of said limitations on the protocol's performance. We simulate and analyze communication scenarios with one data flow, and with multiple data flows