An analytical model of a new packet marking algorithm for TCP flows

To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.comnet.2005.09.003 Byline: Giovanni Neglia (a), Vincenzo Falletta (a), Giuseppe Bianchi (b) Keywords: TCP marking; Differentiated services; Models Abstract: In Differentiated Services networks, packets may receive a different treatment according to their Differentiated Services Code Point (DSCP) label. As a consequence, packet marking schemes can also be devised to differentiate packets belonging to a same TCP flow, with the goal of improving the performance experienced. This paper presents an analytical model for an adaptive packet marking scheme proposed in our previous work. The model combines three specific sub-models aimed at describing (i) the TCP sources aggregate, (ii) the marker, and (iii) the network status. Preliminary simulation results show quite accurate predictions for throughput and average queue occupancy. Besides, the research suggests new interesting guidelines to model queues fed by TCP traffic. Author Affiliation: (a) Dipartimento di Ingegneria Elettrica, DIE, Universita degli Studi di Palermo, 90128 Palermo, Italy (b) Dipartimento di Ingegneria Elettronica, DIE, Universita degli Studi di Roma, Tor Vergata, 00133 Roma, Italy