The LACP preemption function ensures that the interface with the highest LACP priority will return to functioning as an active interface after recovering from a fault. If LACP preemption is disabled, the interface cannot become active interface after it recovers.
The LACP preemption delay is the period that an inactive interface waits before changing to the active interface. The LACP preemption delay reduces the chances of instable data transmission on an Eth-Trunk due to frequent status changes of some links.
The system view is displayed.
The Eth-Trunk interface view is displayed.
LACP preemption is enabled.
By default, LACP preemption is disabled. To ensure normal running of an Eth-Trunk, enable or disable LACP preemption at both ends of the Eth-Trunk.
The LACP preemption delay is set.
By default, the LACP preemption delay is 30 seconds. If both devices of an Eth-Trunk use different preemption delays, the longer preemption delay becomes effective.