This read-create Unsigned32 holds the low-order 32 bits of the Policer's Excess Information Rate (EIR), the additional rate above CIR that is still permitted but marked as excess (yellow). An administrator configures this alongside EIRHi to size how much bursting above the committed rate the policer will tolerate before discarding traffic outright. For example, allowing a flow point to burst modestly above its guaranteed rate during short traffic spikes means setting a nonzero EIR across this Lo object and its Hi counterpart.