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Configuration Guide - MPLS

S7700 and S9700 V200R010C00

This document describes MPLS configurations supported by the switch, including the principle and configuration procedures of static LSPs, MPLS LDP, MPLS TE, MPLS QoS, MPLS OAM, Seamless MPLS, and MPLS common features, and provides configuration examples.
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LDP Session Is Down

LDP Session Is Down

Fault Description

An LDP session is Down after being established.

Procedure

  1. Check whether the license file containing the MPLS function has been activated on the switch.

    Run the display license command in any view. If the command output does not contain the control item MPLS, contact the device distributor to purchase a license.

  2. Check whether the interface where the LDP session is established is shut down.

    Run the display this command in the interface view. If the following information is displayed:

    shutdown

    The interface is shut down.

    If the interface is shut down, run the undo shutdown command to start the interface.

  3. Check whether the MPLS-related configurations are deleted.

    Run the display current-configuration command in any view to check whether MPLS-related configurations exist.

    • If the output does not include the following information:
      mpls
      
      The MPLS configuration is deleted.
    • If the output does not include the following information:
      mpls ldp
      
      The MPLS LDP configuration is deleted.
    • If the output does not include the following information:
      mpls ldp remote-peer
      
      The remote LDP session is deleted.

    If MPLS-related configurations are deleted, run the corresponding commands to restore the configurations.

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Updated: 2019-04-18

Document ID: EDOC1000141902

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