Title :
TCP over ATM: simulation model and performance results
Author :
Gurski, Remi J. ; Williamson, Carey L.
Author_Institution :
Dept. of Comput. Sci., Saskatchewan Univ., Saskatoon, Sask., Canada
Abstract :
While the transmission control protocol (TCP) generally provides robust performance across many network environments, several researchers have identified the poor end-to-end performance achieved by TCP on asynchronous transfer mode (ATM) networks. The performance problems arise for several reasons: (1) a size mismatch between TCP segments and ATM cells; (2) the simple protocols used for segmentation and reassembly in ATM, and for retransmission in TCP; (3) specific “optimizations” in TCP, made primarily for low-bandwidth Internet environments which do not work well in high speed ATM networks; (4) features (or misfeatures) in most TCP protocol implementations; and (5) subtle interactions between all of these factors. This paper describes a simulation model that we have constructed to study TCP performance on ATM networks, as well as a set of simulation experiments conducted using the model. The TCP model is detailed enough to recreate many of the performance problems identified by other researchers, as well as to evaluate potential solutions to the performance problems. The TCP model adds to the traffic modeling toolkit available in our existing ATM network simulator, and enables the further study of performance issues in TCP over ATM
Keywords :
asynchronous transfer mode; simulation; transport protocols; ATM; TCP; asynchronous transfer mode; performance; reassembly; retransmission; segmentation; simulation model; size mismatch; traffic modeling; transmission control protocol; Asynchronous transfer mode; Computational modeling; Computer science; Computer simulation; IP networks; Local area networks; Metropolitan area networks; Robust control; Throughput; Transport protocols;
Conference_Titel :
Computers and Communications, 1996., Conference Proceedings of the 1996 IEEE Fifteenth Annual International Phoenix Conference on
Conference_Location :
Scottsdale, AZ
Print_ISBN :
0-7803-3255-5
DOI :
10.1109/PCCC.1996.493653