23. 25 Deliveryrate BDP BDP+BufSize RTT Optimal: max BW and min RTT (Kleinrock) amount in flight Optimal operating point 23 Deliveryrate BDP BDP+BufSize RTT Loss based CC (CUBIC / Reno) amount in flight Loss based congestion control in deep buffers BDP = (max BW) * (min RTT) 26 Deliveryrate BDP BDP+BufSize RTT amount in flight Est min RTT = windowed min of RTT samples Est max BW = windowed max of