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Configuration Guide - Ethernet Switching

S7700 and S9700 V200R011C10

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) Configuring the Working Mode of an Eth-Trunk in an E-Trunk

(Optional) Configuring the Working Mode of an Eth-Trunk in an E-Trunk

Context

You can configure the working mode for only the Eth-Trunks that have been added to an E-Trunk. The working mode of an Eth-Trunk can be automatic, forced master, or forced backup.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run interface eth-trunk trunk-id

    The Eth-Trunk interface view is displayed.

    Only Eth-Trunks in LACP mode can be added to an E-Trunk.

  3. Run e-trunk mode { auto | force-master | force-backup }

    A working mode of the Eth-Trunk in the E-Trunk is configured.

    By default, an Eth-Trunk in an E-Trunk works in automatic mode.

    The e-trunk mode command is valid only for the Eth-Trunk in an E-Trunk. When the Eth-Trunk is deleted from the E-Trunk, the configuration is deleted automatically.

    When an Eth-Trunk works in automatic mode, its master/backup status depends on the E-Trunk status of the local device and fault information of the remote Eth-Trunk.
    • If the local E-Trunk is the master, the local Eth-Trunk works in master state.

    • If the local E-Trunk is the backup and the remote member Eth-Trunk fails, the local Eth-Trunk works in master state. When the local Eth-Trunk receives a notification that the remote Eth-Trunk has recovered, the local Eth-Trunk becomes the backup.

    NOTE:

    During E-Trunk running, changing the hello packet sending interval or timeout interval will cause the E-Trunk to alternate between the master and the backup. Before changing the hello packet sending interval or timeout interval, you are advised to configure member Eth-Trunks to work in forcible master/backup state. After the new configuration takes effect, restore the working mode to automatic.

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Updated: 2019-10-18

Document ID: EDOC1000178310

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