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Configuration Guide - VPN

S7700 and S9700 V200R013C00

This document describes the configurations of VPN, including GRE, IPSec, BGP/MPLS IP VPN, BGP/MPLS IPv6 VPN, VLL, PWE3, VPLS, L2VPN Access to L3VPN.
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(Optional) Configuring BFD for PW

(Optional) Configuring BFD for PW


BFD for PW is recommended because it speeds up fault detection.

You can configure static BFD for PW or dynamic BFD for PW on the PE devices at both ends of a PW.
  • To configure static BFD for PW, BFD parameters must be specified. Static BFD for PW applies to small-size networks.
  • To configure dynamic BFD for PW, BFD parameters do not need to be specified. Dynamic BFD for PW applies to large-size networks.


For details, see the following topics.
  • BFD for PW on both PEs at the two ends must be configured or deleted simultaneously. Otherwise, the statuses of PWs on the PEs are inconsistent.
  • To monitor statuses of tunnels that carry PWs, configure BFD for tunnel. For detailed configurations, see MPLS LDP Configuration and MPLS TE Configuration in the S7700 and S9700 V200R013C00 Configuration Guide - MPLS.
Updated: 2019-04-08

Document ID: EDOC1100065751

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