You have set up an End-to-End monitor for an E_Port trunk. You configure a monitor on that trunk.
What happens when the master port goes offline?
End-to-end monitoring is disabled until that initial master comes back online.
End-to-end monitoring moves to the new master port.
End-to-end monitoring is moved to the last slave to come online.
End-to-end monitoring is applied to all other ports in the trunk group.