This read-write PcpDEEncType object is a port-level control specifying the mode of drop-eligibility encoding in the PCP bits of the VLAN tag within an encapsulation header, distinct from the plain (non-encapsulated) PCP DE encoding object. It matters for services using an encapsulation header (such as a pseudowire or tunnel encapsulation) where the relevant PCP bits live in that encap header's tag rather than the outer customer-facing tag. For example, on a port terminating an encapsulated pseudowire service, an admin would set cmEthernetNetPortEncapPcpDEEncodingType to match the encoding scheme used inside that encapsulation header rather than relying on the outer-tag encoding object.