2.3 Q3: Effects of Multiplexing Next, assume multiple hosts connected to sl want
ID: 3748567 • Letter: 2
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2.3 Q3: Effects of Multiplexing Next, assume multiple hosts connected to sl want to simultaneously talk to hosts connected to s6 A. What is the expected latency and throughput when two pairs of hosts are communicating simultaneously? Fill in Table 3 with your predictions Use ping and iPerf to measure the latency and throughput when there are two pairs of hosts communicating simultaneously; it does not matter which pairs of hosts are com- municating as long as one is connected to s1 and one is connected to s6. Use the same parameters as above (20 packets / 20 seconds) and fill in the table with your actual mea- surements. Briefly explain the results. If your prediction was wrong, explain why. B. Repeat for three pairs of hosts communicating simultaneously and fill in the table with vour predictions and actual measurements, Don't worry too much about starting the clients at the exact same time. As long as the connections overlap significantly, you should achieve the correct results. One simple way is to open up terminals for each of the hosts you'll use, start the iPerf servers, type in the iPerf client command on each of the client hosts without hitting ENTER, and then quickly hit ENTER on all client hosts so that they start at roughly the same time Dr. K., 2018 CPSC 4550: Computer Networks Fall 2018 Predict Throughput Actual Throughput Predict Latency Actual Latency Wo airs Three airsExplanation / Answer
Host A calls Host B
=> 1 -> 3 -> 6 (3 hops)
Host B calls Host E
=> 6 -> 3 -> 1 (3 Hops)
Host D calls Host A
=> 4 -> 1 (2 Hops)
Host C calls Host E
=> 5 -> 4 -> 1 (3 Hops)
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