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Configuration Guide - MPLS

S7700 and S9700 V200R013C00

This document describes the configurations of MPLS, including Static LSP, MPLS LDP, MPLS QoS, MPLS TE, MPLS OAM, Seamless MPLS.
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LDP LSP Alternates Between Up and Down States

LDP LSP Alternates Between Up and Down States

Fault Description

An LDP LSP alternates between Up and Down states after being established.


  • Check whether the LDP session flaps.

    Run the display mpls ldp session command to check the displayed Status field. You are advised to run this command once every 1s. If the LDP session status switches between Operational and non-operational, the LDP session flap occurs.

    If the LDP session flap occurs, rectify the fault by referring to LDP Session Alternates Between Up and Down States.

Updated: 2019-04-08

Document ID: EDOC1100065745

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