UFD operating notes
A port cannot be added to a trunk group if it already belongs to an LtM or LtD.
Ports that are already members of a trunk group cannot be assigned to an LtM or LtD.
Trunks that are configured as LtM or LtD cannot be deleted.
Configuring ports as LtM and LtD for track 3
switch# uplink-failure-detection track 3 links-to-monitor 5,6,7 links-to-disable 8,9,10
Removing a LtM port and an LtD port for track 3
switch# no uplink-failure-detection track 3 links-to-monitor 5 links-to-disable 8