This read-create Unsigned32 holds bits of the Service OAM Excess Information Rate (SOAM-EIR) on a per-COS access-port QoS Shaper, the burst allowance above the reserved SOAM-CIR for OAM traffic at the access edge. It matters when an admin wants OAM/CFM frames to tolerate occasional bursts (such as a burst of loss-measurement PDUs) right at the access port without being dropped alongside excess customer traffic. For example, during a maintenance test that briefly increases CFM frame volume on an access port, a nonzero SOAM-EIR configured via this object lets those extra OAM frames pass rather than being discarded.