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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 Physical Layer Fault Notification

(Optional) Configuring Physical Layer Fault Notification


Physical layer fault notification speeds up fault detection and notification. This function implements the transfer of fault information between a PW and an AC. The PE device on the primary PW shuts down the corresponding AC interface when it detects a PW failure. The dual-homed CE devices then detect the link failure and trigger link switching.

Physical layer fault notification can only be configured on Ethernet interfaces that have set up VC connections. Perform the following operations on the PE devices to which the CE device is dual-homed:


  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The AC interface view is displayed.

  3. Run mpls l2vpn trigger if-down

    Physical layer fault notification is enabled.

Updated: 2019-04-08

Document ID: EDOC1100065751

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