This read-only ProtocolStateType, indexed by ifIndex in the mellanoxDCBPortTable, reports the administratively configured PFC state on a specific port. Admins use it to confirm which ports have PFC intentionally enabled for lossless traffic before checking whether that configuration is actually operational, since PFC must be correctly configured on both ends of a link to avoid packet loss for sensitive traffic classes. For example, an admin auditing a fabric for RoCE readiness would check that this object reads enabled on every port carrying storage traffic.