assume that in the network shown in Figure 4.1 two parallel TCP transmissions are performed. TCP1...

  

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assume that in the network shown in Figure 4.1 two parallel TCP transmissions are performed. TCP1 is a transmission between Source A and Sink A that uses TCP Tahoe. TCP2 is a transmission between Source B and Sink B that uses TCP Reno. Initial ssthresh for both TCP transmissions is set to 32. In this specific scenario no additional delay through forwarding is introduced. Thus, the RTT is only composed of the sums of the delay indicated on each link, times two. Router 3 Source A 10 ms 10 ms Source B Router 1 10 ms Router 2 15 ms 5 ms 15 ms Sink B Figure 4.1 Network Layout for Question 4 Sink A (a) For the TCP 1 transmission, draw the resulting congestion window, assuming a packet loss (triple duplicate ACKS) is detected at time t=900ms. You should include a description in words of how you are making this drawing. A template is given in Figure 4.2 [9 marks] Congestion window (segments) 40 35 30 25 20 15 10 5 0 0.00 100.00 200.00 300.00 400.00 500.00 600.00 700.00 800.00 900.00 1000.00 Time (ms) Figure 4.2 Template for solution to Question 4 1100.00 1200.00 (b) For the TCP 2 transmission, draw the resulting congestion window on the same graph as for part a, this time assuming that a packet loss (triple duplicate ACKs) is detected at time t=650ms. You should include a description in words of how you are making this drawing. [9 marks] assume that in the network shown in Figure 4.1 two parallel TCP transmissions are performed. TCP1 is a transmission between Source A and Sink A that uses TCP Tahoe. TCP2 is a transmission between Source B and Sink B that uses TCP Reno. Initial ssthresh for both TCP transmissions is set to 32. In this specific scenario no additional delay through forwarding is introduced. Thus, the RTT is only composed of the sums of the delay indicated on each link, times two. Router 3 Source A 10 ms 10 ms Source B Router 1 10 ms Router 2 15 ms 5 ms 15 ms Sink B Figure 4.1 Network Layout for Question 4 Sink A (a) For the TCP 1 transmission, draw the resulting congestion window, assuming a packet loss (triple duplicate ACKS) is detected at time t=900ms. You should include a description in words of how you are making this drawing. A template is given in Figure 4.2 [9 marks] Congestion window (segments) 40 35 30 25 20 15 10 5 0 0.00 100.00 200.00 300.00 400.00 500.00 600.00 700.00 800.00 900.00 1000.00 Time (ms) Figure 4.2 Template for solution to Question 4 1100.00 1200.00 (b) For the TCP 2 transmission, draw the resulting congestion window on the same graph as for part a, this time assuming that a packet loss (triple duplicate ACKs) is detected at time t=650ms. You should include a description in words of how you are making this drawing. [9 marks]

Answer rating: 100% (QA)

Unfortunately Im not able to create drawings or images However I can certainly guide you through how to draw the resulting congestion window for both ... View the full answer