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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 Ethernet over GRE Reliability

(Optional) Configuring Ethernet over GRE Reliability


A VE interface will become invalid if the card where the interface resides is faulty or absent. In this case, services will be interrupted. To solve this problem, a tunnel interface on a switch can be bound to two VE interfaces. Only one VE interface takes effect at a time. If a VE interface fails, traffic is switched to the other VE interface.


  • Perform operations in Configuring Basic Ethernet over GRE Functions repeatedly to configure two VE interfaces and bind them to the same tunnel interface.


    Ensure that the two VE interfaces have the same configuration.

    If the faulty VE interface becomes valid again, service traffic will not be switched back to it.

Updated: 2019-04-08

Document ID: EDOC1100065751

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