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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 ISDN BRI Interface

Configuring an ISDN BRI Interface

The ISDN BRI interface configuration includes maximum transmission unit (MTU), interface description, and the link layer protocol.

Pre-configuration Tasks

Before configuring an ISDN BRI interface, complete the following task:

  • Install a 1BST interface card on the router and ensuring that it is registered successfully.

Context

Before configuration, clarify the following points:

  • The interface provided by the ISP is an ISDN BRI U interface or an ISDN BRI S/T interface. The 1BST interface card supported by the device provides an ISDN BRI S/T interface.
  • Whether the applied ISDN service supports digital services. The ISDN network supports digital or voice services. Devices communicate in digital format. Therefore, the applied ISDN service must provide digital services; otherwise, the devices cannot communicate.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run interface bri interface-number

    The ISDN BRI interface view is displayed.

  3. Run mtu mtu

    The MTU of the ISDN BRI interface is set.

    By default, the MTU of an ISDN BRI interface is 1500 bytes.

  4. (Optional) Run description description

    A description is configured for the ISDN BRI interface.

  5. Run either of the following commands to configure a link layer protocol for the ISDN BRI interface:

    • Run link-protocol ppp

      PPP is configured as the link layer protocol of the interface.

    • Run link-protocol fr [ ietf | nonstandard ]

      FR is configured as the link layer protocol of the interface.

    By default, the link layer protocol of an ISDN BRI interface is PPP.

Verifying the Configuration

Run the display interface bri [ interface-number ] command to check the running status and statistics of the specified ISDN BRI interface.

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Updated: 2019-03-06

Document ID: EDOC1100069331

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