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NE40E-M2 V800R010C10SPC500 Configuration Guide - WAN Access 01

This is NE40E-M2 V800R010C10SPC500 Configuration Guide - WAN Access
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Configuring the Loopback Function for an E1 Interface

Configuring the Loopback Function for an E1 Interface

This section describes how to configure the loopback function on a channelized E1 interface. The loopback function is used to check the interface or cable status. In normal situations, the loopback function is disabled.

Context

The loopback function has two types:
  • Local loopback: is used to locate a system fault.
  • Remote loopback: is used to locate a link fault or test the quality of a link.
NOTE:
  • To enable local loopback on an E1 interface, ensure that the clock of the E1 interface works in master mode.
  • To enable remote loopback on an E1 interface, ensure that the clock of the E1 interface works in slave mode.

This configuration process is supported only on the Admin-VS.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run controller e1 controller-number

    The E1 interface view is displayed.

  3. Run loopback { local | remote } [ autoclear period hold-time ]

    The loopback function is enabled on the E1 interface.

    To enable the E1 interface to delete the loopback configuration after a specified period, specify autoclear period hold-time in the command. This function takes effect when loopback is enabled. After the time specified by hold-time elapses, the loopback configuration is automatically deleted.

  4. Restart the E1 interface.
    1. Run shutdown

      The interface is disabled.

    2. Run commit

      The configuration is committed.

    3. Run undo shutdown

      The interface is enabled.

    NOTE:

    After the configuration is complete, the configuration takes effect only after the interface is restarted.

  5. Run commit

    The configuration is committed.

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Updated: 2019-01-02

Document ID: EDOC1100058399

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