... simulation in Figure 4 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 ... router is the same as the UDP sending rate. ) The bold line (at the top of the graph) shows the aggre-gate goodput.As Figure 2 shows, when the sending rate of the UDP flowis small, the TCP flows ... terms of the increasing deployment of such traffic in the Internet. The In- ternet is now at a cross-roads in terms of the use of end -to- end congestion control for best-effort traffic. It is in a...