ContactPerson: qiao@computer.org Remote host: time.cse.buffalo.edu ### Begin Citation ### Do not delete this line ### %R 2003-13 %U /web/faculty/qiao/TCP-OBS-TR2003-13.pdf %A Yu, Xiang, Qiao, Chunming , Liu, Yong and Towsley, Don %T Performance Evaluation of TCP Implementations in OBS Networks %D July 1, 2003 %I Department of Computer Science and Engineering, SUNY Buffalo %K Optical Burst Switching, TCP, Reno, SACK, Performance modeling %Y Computer Communications Networks, Network Protocol, C.2.2 %X Since TCP traffic is and may remain as the most popular traffic type in the Internet, it is important to evaluate the performance of TCP in networks employing optical burst switching (OBS), a promising paradigm for the next generation Optical Internet. This work is the first comprehensive study of the TCP performance in OBS networks. Our results provide valuable insights into the interactions between the TCP congestion control mechanism and OBS-specific mechanisms such as burst assembly/disassembly and buffer-less burst switching. In particular, we identify various factors that result in TCP throughput gains and penalties, and determine optimal burst assembly times to be used in OBS networks. In addition, TCP throughput models are developed for the three most popular TCP implementations, i.e., SACK, Reno and New-Reno, and are validated through simulations.