This read-create Unsigned32 holds the low-order 32 bits of the Shaper's Excess Information Rate (EIR), the rate at which traffic above the committed rate is still allowed but treated as excess. An administrator sets this alongside the EIR Hi object to define how much burst-above-CIR bandwidth the shaper permits. For example, allowing a customer's flow point to burst briefly above its committed rate during peak usage means configuring a nonzero EIR across this Lo object and its Hi counterpart.