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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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Setting the LACP Mode

Setting the LACP Mode


Link aggregation can work in manual mode or LACP mode.

In LACP mode, you must manually create an Eth-Trunk and add member interfaces to the Eth-Trunk. LACP then determines active interfaces through negotiation.

If an Eth-Trunk interface has member interfaces, you can switch the Eth-Trunk interface's working mode between manual mode and LACP mode. However, if the Eth-Trunk interface is added to an E-Trunk, you cannot change its working mode.

To delete existing member interfaces, run the undo eth-trunk command in the interface view or the undo trunkport interface-type interface-number command in the Eth-Trunk interface view.


  1. Run:


    The system view is displayed.

  2. Run:

    interface eth-trunk trunk-id

    The Eth-Trunk interface view is displayed.

  3. Run:

    mode lacp

    The Eth-Trunk is configured to work in LACP mode.

    By default, an Eth-Trunk works in manual mode.

    Before configuring an Eth-Trunk, ensure that both ends use the same Eth-Trunk mode. If the local end works in LACP mode, the remote end must use the LACP mode.

Updated: 2019-08-21

Document ID: EDOC1000142081

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