Effect of Service Rate
Compliant throughput observed to be less than the reserved rate of service
Not all tokens generated are used to mark packets at the source, or token buffer overflows
TCP’s congestion control is overly conservative and does not exploit the reservation the connection has
TCP ceases to transmit due to ack compression (or gaps between successive acknowledgments)
In fast recovery, TCP cuts its window in half by halting additional transmissions until half the original window clears the network
Gaps in ack stream also form due to normal dynamics of network traffic