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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 an Async Interface

Configuring an Async Interface

Configuring an async interface includes setting the working mode and attributes for the async interface.

Applicable Environment

To transmit upper-layer data services on an async interface, set attributes for the interface to ensure that its physical layer status and link layer status are Up.

Physical and link layer parameters of the async interface have default values. To modify these parameters, perform the following steps.

Pre-configuration Tasks

Before configuring an async interface, complete the following task:

  • Installing an 8AS interface card on the device and ensuring that it is registered successfully


  1. Run system-view

    The system view is displayed.

  2. Run interface async interface-number

    The async interface view is displayed.

  3. Run async mode { flow | protocol }

    The working mode is set for the async interface.

    By default, an async interface works in protocol mode.

  4. (Optional) Run detect dsr-dtr

    Detection of DSR and DTR signals is enabled on the async interface.

    By default, detection of DSR and DTR signals is enabled on an async interface.

  5. (Optional) Run phy-mru mrusize

    The MRU is set for the async interface.

    The default MRU of an async interface is 1700 bytes.

  6. (Optional) Run mtu mtu

    The MTU is set for the async interface.

    The default MTU of an async interface is 1500 bytes.

Verifying the Configuration

  • Run the display interface async command to check basic configurations and packet statistics about the async interface.

  • Run the display interface brief command to check brief information about the async interface, including the physical status, link protocol status, bandwidth utilization, and number of error packets.

  • Run the display ip interface brief command to check the physical status and IP address of the async interface.

Updated: 2019-03-06

Document ID: EDOC1100069331

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