This read-create Unsigned32 holds part of the Excess Information Rate (EIR) for a QoS shaper on an F3 network port; notably its own source description labels it as the higher 32 bits despite the object's Lo suffix, an apparent inconsistency in how this particular object was documented in the MIB. An administrator sets it, together with the shaper's other EIR-related field, to define how much traffic above the committed rate the port's shaper will still pass. For example, when provisioning excess capacity for bursty backup traffic on a network port, an engineer configuring this field should verify against the paired EIR object rather than trust the Lo/Hi naming alone.