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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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Configuring the Triggering Policy of Dynamic BFD for LDP LSP

Configuring the Triggering Policy of Dynamic BFD for LDP LSP


There are two triggering policies to establish the session of dynamic BFD for LDP LSP:
  • Host mode: is used when all host addresses need to be triggered to create BFD session. You can specify parameters of nexthop and outgoing-interface to define LSPs that can create a BFD session.

  • FEC list mode: is used when only a part of host addresses need to be triggered to create a BFD session. You can use the fec-list command to specify host addresses.

You can configure the triggering policy on the source end of the detected LSP.


  1. Run system-view

    The system view is displayed.

  2. (Optional) If you need the FEC list triggering policy, perform the following operations in this step:
    1. Run fec-list list-name

      A FEC list is created, and the FEC list view is displayed.

      By default, no FEC list is created.

    2. Run fec-node ip-address [ nexthop ip-address | outgoing-interface interface-type interface-number ] *

      A FEC node is added to the FEC list.

      By default, no FEC node is created.

    3. Run quit

      Return to the system view.

  3. Run mpls

    The MPLS view is displayed.

  4. Run mpls bfd-trigger [ host [ nexthop next-hop-address | outgoing-interface interface-type interface-number ] * | fec-list list-name ]

    The triggering policy to establish the session of dynamic BFD for LDP LSP is configured.

    By default, no trigger policy for an LDP BFD session is configured.

    After the command is run, the BFD session is started to create.

Updated: 2019-04-08

Document ID: EDOC1100065745

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