Performance analysis of routers with TCP and UDP connections with priority and RED control

Authors:
Vinod Sharma;Atul Gupta
Affiliations:
Dept. of ECE, Indian Institute of Science, Bangalore, 560012, India;CDOT, 71/1 Millers Road, Bangalore, 560052, India
Venue:
ICCC '02 Proceedings of the 15th international conference on Computer communication
Year:
2002

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Abstract

We analyse the performance of a router with multiple TCP and UDP connections. The UDP stream has pre-emptive resume or non pre-emptive priority over the TCP connections. The UDP stream modeled as a Markov modulated Poisson process can actually be a superposition of several UDP streams. The TCP streams can have different propagation delays, packet size distributions and maximum window sizes. We obtain the stability and closed form expressions for various performance parameters. For example the formulae for the throughputs of various TCP streams , their mean sojourn times and the mean sojourn time of the UDP stream are provided. Next we obtain all the above results when the router deploys the RED congestion control algorithm. Our approximations are verified through extensive simulation results.