... the R1-R2link. (Because there is no congestion on the first link, the UDParrival rate at the first router is the same as the UDP sendingrate.) The bold line (at the top of the graph) shows the ... shows, when the sending rate of the UDP flowis small, the TCP flows have high goodput, and use almost all of the bandwidth on the R1-R2 link. When the sending rate of the UDP flow is larger, the UDP ... uses the scenario in Figure 1, with the bandwidth of the R2-S4 linkset to 128 Kbps, 9% of the bandwidth of the R1-R2 link. Be-cause the final link in the path for the UDP traffic (R2-S4) isof...