When an Eth-Trunk in LACP mode goes Up and Down frequently due to unstable physical links, LACP flaps. As a result, services transmitted on the Eth-Trunk link are affected. After the LACP preemption delay is set, the LACP negotiation is not performed during the delay. The possibility of LACP flapping is reduced and services will not be affected.
You can run the lacp preempt enable command on the interface view to enable the LACP preemption on the Eth-Trunk and run the lacp preempt delay delay-time command to set the LACP preemption delay.
