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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 Asynchronous Serial Interface

Configuring an Asynchronous Serial Interface

Configuring an asynchronous serial interface includes setting the working mode and parameters for the asynchronous serial interface.

Applicable Environment

To transmit upper-layer data services on an asynchronous serial interface, set the working mode and parameters for the interface to ensure that its physical layer status and link layer status are Up.

Parameters of an asynchronous serial interface have default values. To modify these parameters, perform the following steps.

Pre-configuration Tasks

Before configuring an asynchronous serial interface, complete the following task:

  • Install an 1SA, 2SA, or 8SA interface card on the device and ensuring that it is registered successfully; or power on the AR162F and ensure that their self-tests are successful.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run interface serial interface-number

    The serial interface view is displayed.

  3. Run physical-mode async

    The serial interface is configured to work in asynchronous mode.

    By default, a serial interface works in synchronous mode.

  4. Run async mode { flow | protocol }

    The working mode is set for the asynchronous serial interface.

    By default, an asynchronous serial interface works in protocol mode.

  5. Run detect dsr-dtr

    Detection of Data Set Ready (DSR) and Data Terminal Ready (DTR) signals is enabled on the asynchronous serial interface.

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

  6. Run phy-mru mrusize

    The MRU is set for the asynchronous serial interface.

    The default MRU of an asynchronous serial interface is 1700 bytes.

  7. Run mtu mtu

    The MTU is set for the asynchronous serial interface.

    The default MTU of an asynchronous serial interface is 1500 bytes.

Verifying the Configuration

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

  • Run the display interface brief command to check brief information about the serial 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 serial interface.

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Updated: 2019-03-06

Document ID: EDOC1100069331

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