Source 1 10 Mbps Ethernet Router Dest 1.5 Mbps T1 Link 100 Mbps FDDI Source 2
Source 1 Router Dest 1 Router Source 2 Router Dest 2 Source 3 Power = Throughput Delay Optimal Load Load
Flow 1 Flow 2 Service Flow 3 Flow 4
Flow 1 Output Flow 2 F=10 F=8 F=5 Flow 1 Flow 2 (arriving) (being sent) Output F=10 F=2
Source Destination . . .
70 60 50 40 KB 30 20 10 0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 Time in seconds
Source Destination . . .
70 60 50 40 KB 30 20 10 0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 Time in seconds
segment 1 segment 2 segment 3 ack 1 segment 4 ack 2 segment 5 ack 2 segment 6 ack 2 ack 2 retransmit segment 3 ack 6 70 60 50 40 KB 30 20 10 0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 Time in seconds
Queue Length Current Time Time Previous Current Cycle Cycle Averaging Interval
MaxThreshold MinThreshold AvgLength
110 220 330 440 550 660 770 880 990 70 60 50 40 KB 30 20 10 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 Time in seconds 110 220 330 440 550 660 770 880 990 1100 1000 900 800 Sending KB/S 700 600 500 400 300 200 100 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 Time in seconds 10 Queue size in router 5 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 Time in seconds
110 220 330 440 550 660 770 880 990 70 60 50 40 KB 30 20 10 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 Time in seconds 110 220 330 440 550 660 770 880 990 240 200 160 CAM KB/S 120 80 40 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 Time in seconds
Real 0 1 2 3 4 5 6 Time (ms) Flow 1 1 2 3 4 5 6 Flow 2 2 4 6 Output 1 2 2 3 4 4 5 6 6 Flow 1 7 8 9 10 Flow 2 6 8 10 12 10 12 10 inserted into queue, 10 Queue 8 9 9 10 12 dropped 6 8 8 8 8 9 Output 7 6 8 8 9 10 10
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