Comparison of Different Types of Sources of Traffic Using SFQ Scheduling Discipline

Authors: Alejandro Gomez Suarez, H. Srikanth Kamath

Abstract:

In this paper, SFQ (Start Time Fair Queuing) algorithm is analyzed when this is applied in computer networks to know what kind of behavior the traffic in the net has when different data sources are managed by the scheduler. Using the NS2 software the computer networks were simulated to be able to get the graphs showing the performance of the scheduler. Different traffic sources were introduced in the scripts, trying to establish the real scenario. Finally the results were that depending on the data source, the traffic can be affected in different levels, when Constant Bite Rate is applied, the scheduler ensures a constant level of data sent and received, but the truth is that in the real life it is impossible to ensure a level that resists the changes in work load.

Keywords: Cbq, Cbr, Nam, Ns2.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1083773

References:

[1] S. Keshav, An Engineering Approach to Computer Networking, Fifth Ed 2002, pages 209 -263.
[2] Rodrigo Sierra, Fair Queuing in Data Networks, Internetworking 2002 pages 1- 6.
[3] Marc Greis Tutorial, http://www.isi.edu/nsnam/ns/tutorial/
[4] NS2 Web Site www.isi.edu/nsnam/ns
[5] Eitan Altman and Tania Jimenez, NS Simulator for Beginners, December 2003, pages 33 - 38.