FAST TCP in High-Speed Networks: An Experimental Study

Various experiments are conducted using FAST TCP on two high-speed networks and uncovered some of the hidden problems affecting high-speed TCP implementations in practice. While FAST TCP achieved good performance in many scenarios, there were also a number of cases, where adverse conditions, both host related and network related, prevented it from obtaining the expected throughput. Furthermore, tests with other protocols confirmed the existence of performance bottlenecks, some of which are still unknown.