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S12700 V200R010C00 Configuration Guide - Ethernet Switching

This document describes the configuration of Ethernet services, including configuring link aggregation, VLANs, Voice VLAN, VLAN mapping, QinQ, GVRP, MAC table, STP/RSTP/MSTP, SEP, and so on.
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(Optional) Setting the LACP Interface Priority

(Optional) Setting the LACP Interface Priority


In LACP mode, LACP interface priorities are set to prioritize interfaces of the same device. Interfaces with higher priorities are selected as active interfaces.


  1. Run:


    The system view is displayed.

  2. Run:

    interface interface-type interface-number

    The member interface view is displayed.

  3. Run:

    lacp priority priority

    The LACP priority of the member interface is configured.

    By default, the LACP interface priority is 32768. A smaller priority value indicates a higher LACP priority.

    By default, the system selects active interfaces based on interface priorities. However, low-speed member interfaces with high priorities may be selected as active interfaces. To select high-speed member interfaces as active interfaces, run the lacp selected { priority | speed } command to configure the system to select active interfaces based on the interface rate.

    If the max active-linknumber link-number command is run in the Eth-Trunk interface view, you need to run the lacp preempt enable command to enable LACP preemption on the current Eth-Trunk interface. Otherwise, interfaces with high LACP priorities may fail to be selected as active interfaces.

Updated: 2019-08-21

Document ID: EDOC1000142081

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