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Configuration Guide - MPLS

S7700 and S9700 V200R011C10

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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Configuring Dynamic BFD for LDP LSPs

Configuring Dynamic BFD for LDP LSPs

Context

You do not need to specify BFD parameters when configuring dynamic BFD for LDP LSPs. Dynamic BFD for LDP LSPs speeds up link fault detection and reduces the configuration workload. This configuration is simple and flexible.

When configuring dynamic BFD for LDP LSPs, pay attention to the following points:
  • Dynamic BFD only monitors the LDP LSP that is established using a host route.
  • The forwarding modes on the forwarding path and reverse path can be different (for example, an IP packet is sent from the source to the destination through an LSP, and is sent from the destination to the source in IP forwarding mode), but the forwarding path and reverse path must be established over the same link. If they use different links, BFD cannot identify the faulty path when a fault is detected.

Pre-configuration Tasks

Before configuring the dynamic BFD for LDP LSP, configure a local LDP session. For details, see Configuring Basic Functions of MPLS LDP.

Configuration Procedure

Configure dynamic BFD for LDP LSPs according to the following sequence.

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Updated: 2019-10-18

Document ID: EDOC1000178315

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