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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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(Optional) Blocking Synchronization Between LDP and IS-IS on an Interface

(Optional) Blocking Synchronization Between LDP and IS-IS on an Interface

Context

The ldp-sync enable command run in an IS-IS process enables synchronization between LDP and IS-IS on all local IS-IS interfaces. On an IS-IS interface transmits importance services, LDP and IS-IS synchronization may affect service transmission. If the link is working properly and an LDP session over the link fails, IS-IS sends link state PDUs (LSPs) to advertise the maximum cost of the link. As a result, IS-IS does not select the route for the link, which affects important service transmission.

To prevent the preceding problem, block LDP and IS-IS synchronization on an IS-IS interface that transmits important services.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The IS-IS interface view is displayed.

  3. (Optional) On an Ethernet interface, run undo portswitch

    The interface is switched to Layer 3 mode.

    By default, an Ethernet interface works in Layer 2 mode.

  4. Run isis ldp-sync block

    Synchronization between LDP and IS-IS is blocked on the interface.

    By default, synchronization between LDP and IS-IS is not blocked on an interface.

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Updated: 2019-04-08

Document ID: EDOC1100065745

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