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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 Loopback Detection

Configuring Loopback Detection

Context

Performing loopback detection affects system performance. After loopback detection is performed, run the undo loopback command to disable loopback detection in a timely manner.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run controller e3 interface-number

    The CE3 interface view is displayed.

  3. Run loopback { local | remote }

    Loopback detection is enabled, and the loopback detection mode is set.

Follow-up Procedure

The subsequent configuration differs according to the loopback detection mode.

  • When internal loopback is enabled on the CE3 interface using the local command, run the display interface serial interface-number command on the local device to check whether the physical status of the serial interface on the local device is Up.

    If the value of current state is UP, the local device can send and receive packets. If the value of current state is not UP, the local device cannot send or receive packets.

  • When external loopback is enabled on the CE3 interface using the remote command, run the display interface serial interface-number command on the remote device to check whether the physical status of the serial interface on the remote device is Up.

    If the value of current state is UP, the link between the local and remote devices is normal. If the value of current state is not UP, the link between the local and remote devices is faulty.

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Updated: 2019-03-06

Document ID: EDOC1100069331

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