This attribute indicates the discard priority of frames sent to and
received from the ATM connection.
When discardPriority is dp3 the frames belonging to this
connection will be discarded first when the FrAtm/n Dlci/n Siwf and
the ATM End-Point experience congestion.
When discardPriority is dp2 the frames belonging to this
connection will be discarded after all the dp3 priority frames are
discarded when the FrAtm/n Dlci/n Siwf and the ATM End-Point
experience congestion.
When discardPriority is dp1 the frames belonging to this
connection will be discarded after all the dp2 and dp3 priority
frames are discarded when the FrAtm/n Dlci/n Siwf and the ATM
End-Point experience congestion.