The peak information rate (PIR) defines the maximum rate at which packets are allowed to exit the meter. It does not specify the maximum rate at which packets may enter the meter; this is determined 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 native rates in hardware that are used to determine the operational PIR for the meter. The user has some 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 the interpretation of the administrative PIR in Adaptation rule for meters.
The PIR for meters is provisioned on service ingress and access uplink ports or network port ingress within service ingress QoS policies and network QoS policies, respectively.