The committed burst size parameter specifies the maximum burst size that can be transmitted by the source at the CIR while still complying with the CIR. If the transmitted burst is lower than the CBS value, the packets are marked as in-profile by the meter to indicate that the traffic is complying with meter-configured parameters.
The operational CBS set by the system is adapted from the user-configured value by using the minimum constraint. The burst size configured by the user affects the rate step-size used by the system. The system uses the step size in a manner that both the burst-size and rate parameter constraints are met.