Simulation Study of TCP Eifel Algorithms
Guan Ye, Bart Van den Broeck, Jan Potemans, Johan Theunis, Dagang Li, Emmanuel H. Van Lil, Antoine Van de Capelle · 2005
Recent researches on TCP performance show that spurious timeouts due to an unexpected delay increase can considerably degrade TCP performance. When experiencing spurious timeouts, common TCP implementations misjudge the long delay as an indication of packet loss and prematurely resort to loss recovery. To diminish the consequent penalty, the TCP Eifel algorithms have been introduced to detect the occurrence of spurious timeouts and properly revert to the congestion control status. In this work, we extend the OPNET TCP model with both the Eifel detection and response algorithms, compare simulation results among different TCP flavors, and present a deep investigation on how the Eifel algorithms improve TCP performance under spurious timeouts.