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NE40E V800R010C00 Configuration Guide - MPLS 01

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(Optional) Configuring a Policy for Triggering LSP Establishment

(Optional) Configuring a Policy for Triggering LSP Establishment

A policy can be configured to enable LDP to use eligible routes to establish LSPs.


To establish ingress and egress LSPs on a public network, a policy can be configured to enable LDP to use eligible routes to establish LSPs.

An LSP can be established only when each LSR along the LSP has a route matching the FEC for the LSP.


  1. Run:


    The system view is displayed.

  2. Run:


    The MPLS view is displayed.

  3. Run:

    lsp-trigger { all | host | ip-prefix prefix-name| none }

    A policy for triggering LSP establishment is configured.

    • all: allows LDP to use IGP routes and static routes to establish LSPs. Neither public network BGP routes nor default routes can be used to establish LSPs.

    • ip-prefix: allows LDP to use FECs filtered by an IP address prefix list to establish LSPs.

    • none: disables LDP from establishing LSPs.


    If the triggering policy is changed from all to host, the LSPs that have been established using host routes are not reestablished.

  4. Run:


    The configurations are committed.

Updated: 2018-07-12

Document ID: EDOC1100028530

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