The peak information rate (PIR) defines the maximum rate at which packets are allowed to exit the meter. The PIR does not specify the maximum rate at which packets can enter the meter; this is controlled by the ability of the meter to absorb bursts and is defined by its maximum burst size (MBS).When defining the PIR for a meter, the value specified is the administrative PIR for the meter. The 7210 SAS devices have a number of rates in the hardware that determine the operational PIR for the meter. The user has limited control over how the administrative PIR is converted to an operational PIR if the hardware does not support the exact CIR and PIR combination specified. See Adaptation rule for meters for more information about the interpretation of the administrative PIR.
The in-profile and out-profile values assigned determine the meter behavior for the packet. See Ingress profile assignment for information.