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CLI-based Configuration Guide - Interface Management

AR100, AR120, AR160, AR1200, AR2200, AR3200, and AR3600 V300R003

This document provides the basic concepts, configuration procedures, and configuration examples of the interfaces supported by the device.
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Configuring the Duplex Mode for an Ethernet Interface

Configuring the Duplex Mode for an Ethernet Interface

Context

Duplex modes include:

  • Half-duplex mode: An Ethernet interface only receives or sends data within the specified maximum transmission distance at a time.
  • Full-duplex mode: An Ethernet interface receives and sends data at the same time. The maximum throughput in the full-duplex mode doubles that in the half-duplex mode, and there is no limit on the maximum transmission distance.

You can set the duplex mode for an Ethernet electrical interface in either the auto-negotiation or non-auto negotiation mode.

  • In auto-negotiation mode, interfaces on both ends of a link negotiate their duplex mode. If the negotiated duplex mode is not the required one, you can set the duplex mode manually. For example, two interfaces support both the full-duplex mode and half-duplex mode. If the two interfaces negotiate to work in half-duplex mode, but they are required to work in full-duplex mode, run the auto duplex full command to set the full-duplex mode for the two interfaces.
  • In non-auto negotiation mode, you can manually set the required duplex mode for interfaces.

Procedure

  • Setting the duplex mode in auto-negotiation mode
    1. Run system-view

      The system view is displayed.

    2. Run interface interface-type interface-number

      The Ethernet interface view is displayed.

    3. Run negotiation auto

      The Ethernet interface is configured to work in auto-negotiation mode.

    4. Run auto duplex { full | half }*

      The duplex mode in auto-negotiation mode is set for the Ethernet interface.

    By default, interfaces on both ends of a link negotiate their duplex mode.

  • Setting the duplex mode in non-auto negotiation mode
    1. Run system-view

      The system view is displayed.

    2. Run interface interface-type interface-number

      The Ethernet interface view is displayed.

    3. Run undo negotiation auto

      The Ethernet interface is configured to work in non-auto negotiation mode.

    4. Run duplex { full | half }

      The duplex mode is set for the Ethernet interface.

    By default, an Ethernet interface works in full-duplex mode.

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Updated: 2019-03-06

Document ID: EDOC1100069331

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