This read-create Unsigned32 holds the lower 32 bits of the Committed Information Rate (CIR) configured on a QoS Flow Policer, the guaranteed rate below which traffic is always marked in-profile ('green'). Admins set this to enforce the guaranteed portion of a customer's contracted bandwidth at the ingress policing point, before traffic even reaches any downstream shaper. For example, policing a customer's uplink to guarantee at least 10 Mbps as green traffic, an admin would set cmQosFlowPolicerCIRLo to represent that 10 Mbps rate.