This paper elaborates the performance analysis of a unicast network when two protocols, SCTP (Stream Control Transmission Protocol) and TCP (Transmission Control Protocol) coexist in the network. These two protocols are tested using File Transfer Protocol (FTP) and Constant Bit Rate (CBR) based traffic. From the simulations, it could be concluded that SCTP could achieve better throughput compared to TCP in both FTP and CBR based traffic, with sufficiently high fairness index of both intrafairness and interfairness. The increase of simulation time yields to the increase and relatively stable network performance. The increase of the number of sessions of small bandwidth applications resulted in the increase of troughput and link utilization. The simulations show that implementation of SCTP and TCP in a unicast network generally could be done without having to degrade the network performance, with relatively high fairness index, over 0.85 for various traffic variations.

Bahasa Abstract

Makalah ini menguraikan analisis kinerja jaringan unicast pada saat protokol-protokol SCTP (Stream Control Transmission Protocol) dan TCP (Transmission Control Protocol) berada bersama dalam satu jaringan. Kedua protokol tersebut di ujicoba dengan aplikasi File Transfer Protocol (FTP) dan aplikasi traffic Constant Bit Rate (CBR). Dari simulasi dapat disimpulkan bahwa SCTP mampu mencapai throughput yang lebih tinggi dibandingkan TCP baik pada aplikasi FTP maupun pada aplikasi traffic CBR dengan tingkat fairness, baik intrafairness maupun interfairness; yang cukup tinggi. Peningkatan waktu simulasi menghasilkan nilai kinerja jaringan yang meningkat dan relatif stabil. Peningkatan jumlah sesi pada kapasitas bandwidth kecil menghasilkan peningkatan total throughput dan utilisasi jalur. Hasil simulasi menyatakan bahwa penerapan SCTP dan TCP dalam satu jaringan unicast umumnya dapat dilakukan tanpa menurunkan kinerja jaringan secara keseluruhan dan masih menghasilkan indeks fairness yang tinggi, diatas 0.85 untuk berbagai variasi traffic.


R. Braden et al., IntServ. in the Internet Architec.: an Overview, IETF RFC 1633, June 1994.

S. Blake et al, An Architec. for DiffServ., IETF RFC 2475, December 1998

R. Stewart et. al., Stream Control Transmission Protocol, IETF RFC 2960, October 2000.

S. Fu and M. Atiquzzaman, Improving End-to-End Throughput of Mobile IP Using SCTP, Submitted

for 2003 Worksh. on High Pero. Switch. & Nets., http://www.ce.ou.edu/àtiq/papers - accessed November 2003.

K. Zhang, Multi-homing Feature Studying of SCTP Using NS-2 Network Simulator, CSCI 8211 Class Project, Univ. of Minnesota, 2003.

I. A. Rodríguez, SCTP: The Design of a New Reliable Transp. Prot. for IP Nets., Submitted for Master’s Thesis, Dept. of Elec. & Comm. Eng., Helsinki Univ. of Tech., Feb. 2002.

M. Atiquzzaman dan W. Ivancic, Eval. of SCTP Multistreaming Over Satellite Links, http://www.cs.ou.edu/~atiq/papers- accessed Oct. 2003.

R. Alamgir, M. Atiquzzaman, dan W. Ivancic, Effect of Congestion control on the Perf. of TCP & SCTP over Satellite-Nets., http://esto.nasa.gov/conferences/estc-2002/papers - accessed Oct. 2003.

R.R. Steward, Q. Xie, Introduction to SCTP, Addison Wesley, Boston, 2002, p.12.

The NS-2: http://www.isi.edu/ nsnam/ns, accessed November 2003.

NS-2 SCTP Module: http://pel.cis.udel.edu, accessed November 2003.

Williams Stallings, High Speed Networks & Internets: Performance & Quality of Service, 2nd Eds., Prentice Hall Inc., 2002, p.105.

D. Chiu, R. Jain, Analysis of the Increase and Decrease Alg. for Congest. Avoid. in Computer Networks, Computer Networks and ISDN Systems, 17, (1989) 1-14.



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.