This read-create Unsigned32 holds the lower 32 bits of the Committed Information Rate (CIR) configured on a QoS policer profile, paired with cmQosPolicerProfileCIRHi to form a full-width rate value. An administrator sets it as part of defining the guaranteed bandwidth a policer will always admit. For example, configuring a 100 Mbps CIR requires setting this low-order value together with the corresponding high-order bits to represent the full rate in bits per second.