This read-create Integer32 (1..8) uniquely identifies a Quality-of-Service shaper instance directly on an access port, with the range matching the eight possible COS values (0..7) each shaper index can represent. It matters because, unlike the flow-level shaper index which can go up to 16 for duplicate shapers, this access-port-level index is scoped one-to-one with a COS value, so an admin configuring per-COS shaping on the port picks the index matching the COS they intend to shape. For example, to configure a dedicated shaper for COS 3 traffic directly on an access port, an admin would use cmAccPortQosShaperIndex value 4 (index = COS + 1) to address that specific COS's shaper row.