Performance Analysis of TCP in a Multiple Reliable Connections environment with UDP Traffic Flows using
Performance Analysis of TCP in a Multiple Reliable Connections environment with UDP Traffic Flows using
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Date
2011-03
Authors
Yakubu, Friday
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Abstract
This study is about the performance of TCP in multiple reliable
connections environment with UDP traffic flows using OPNET simulator.
The performance analysis is subjected to the bottleneck of competing
traffics of UDP and TCP, accessed via a limited router buffer size connected
to limited wireless link. Using simulation methodology, the analyses of the
different TCP enhancements by comparing them with each other on the
different test cases made. The research work establishes facts on the effect
of data rate, router buffer size and TCP technology on the behavior of the
TCP in the emulation environment in the presence of UDP traffic flows.
Based on the analyses of the simulation results, different buffer capacity,
data rate and TCP technology have effect on the TCP behavior in different
ways. TCP connections suffer significantly because of the adaptability
behavior and the number of unnecessary retransmissions is usually higher
with large router buffer. Using the selected sizes, smallest router buffer
increases the probability of having a retransmitted packet dropped and use
of medium router buffer size does not cause as low TCP performance as use
of the smallest router buffer, because the larger router buffers avoid several
packets drop problem which was present when using the smallest router
buffer. Similarly, with selected data rate, moderate data rate offers better
performance. For this simulation test-bed, moderate data rate, medium
router buffer size with NewReno offers a good performance of TCP followed
by Reno Technology.
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Keywords
Performance, Analysis, TCP, Multiple, Reliable, Connections, UDP, environment, Traffic, Flows, using, OPNET, Simulator