OPNET PROJECT 1, - John Jenkins CIT 372 OPNET Project 1...

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John Jenkins CIT 372 OPNET Project 1 April 17, 2007
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Topic: o TCP and the congestion control algorithms. Objectives: o To chart and compare WAN performance with regard to dropped packets and the absence/presence of TCP congestion control algorithms. With Fast Recovery/Fast Retransmit both enabled and disabled, the congestion control window will be examined. Implementation: o The model was implemented with a Wide Area Network spanning from the east coast to the west coast. See figure 1-1. o Three scenarios were set up: One with dropped packets and disabled Fast Recovery/Fast Retransmit. Another with dropped packets and Fast Recovery/Fast Retransmit enabled. And a third with no dropped packets. Figure 1–1 o The simulations were run simultaneously and statistics were collected based upon a 10 minute simulation of real-time network activity.
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Results: o With Fast Recovery/Fast Retransmit enabled, the results show that the congestion window experiences the most rapid recovery, therefore allowing the data flow to stay constant, or to
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