cmNetPortPcpDEDecDropEligible is a read-write boolean giving the drop eligibility decoded from an incoming PCP value on this network port, separate from the decoded priority itself. An administrator relies on this object to determine whether an arriving frame's PCP encoding marked it safe to discard under congestion, independent of what priority level it maps to. For example, two frames could decode to the same internal priority yet be treated differently downstream because this object reports one as drop-eligible and the other as not.