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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 CR-LSP Backup

Configuring CR-LSP Backup

CR-LSP backup provides an end-to-end protection mechanism. If a primary CR-LSP fails, traffic rapidly switches to a backup CR-LSP, ensuring uninterrupted traffic transmission.

Pre-configuration Tasks

Before configuring CR-LSP backup, complete the following tasks:
  • Configure a dynamic MPLS TE or DS-TE tunnel. For details, see Configuring a Dynamic MPLS TE Tunnel.
  • Enable MPLS, MPLS TE, and RSVP-TE globally and on interfaces of each node along a backup CR-LSP.

If CR-LSP hot standby is configured, perform the operation of Configuring Static BFD for CR-LSPs or Configuring Dynamic BFD for CR-LSPs to implement fast switching at the millisecond level.

Configuration Procedure

Configuring forcible switchover, locking a backup CR-LSP attribute template, configuring dynamic bandwidth for hot-standby CR-LSPs, and configuring a best-effort path are optional.

Updated: 2019-10-18

Document ID: EDOC1000178315

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