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AR100-S, AR110-S, AR120-S, AR150-S, AR160-S, AR200-S, AR1200-S, AR2200-S, and AR3200-S V200R009 CLI-based Configuration Guide - Ethernet Switching

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(Optional) Setting the LACP System Priority

(Optional) Setting the LACP System Priority

Context

LACP system priority differentiates priorities of devices at both ends. In LACP mode, active interfaces selected by devices at both ends must be consistent; otherwise, the LAG cannot be set up. To keep active interfaces consistent at both ends, you can set the priority of one device to be higher than that of the other device so that the other device can select active interfaces according to those selected by the device with a higher priority.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run lacp priority-command-mode { default | system-priority }

    The configuration mode of the LACP system priority is set.

    By default, the configuration mode of the LACP system priority is default.

    If the lacp priority command used to set the LACP interface priority is executed in the system view, the Eth-Trunk in LACP mode may alternate between Up and Down. To prevent this situation, run the lacp priority-command-mode command in the system view to set the configuration mode of the LACP system priority to system-priority. This mode can be used to differentiate the LACP system priority and LACP interface priority.

  3. Use either of the following methods to set the LACP system priority based on the configuration mode.
    • default mode

      Run the lacp priority priority command to set the LACP system priority.

    • system-priority mode

      Run the lacp system-priority priority command to set the LACP system priority.

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

    The end with a smaller priority value functions as the Actor. If the two ends have the same priority, the end with a smaller MAC address functions as the Actor.

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Updated: 2019-05-17

Document ID: EDOC1000174108

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