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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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Binding a VPN Instance to an Interface

Binding a VPN Instance to an Interface


A VPN instance has been created and the IPv4 address family has been enabled for the VPN instance.


  • After configuring a VPN instance on a PE device, bind the VPN instance to the interface that belongs to the VPN. Otherwise, the interface functions as a public network interface and cannot forward VPN data.
  • An interface becomes a private network interface after a VPN instance is bound to it. You must configure an IP address for the interface so that the PE device can exchange routing information with its attached CE device.
  • After a VPN instance is bound to an interface, configuration of the Layer 3 features (IPv4 and IPv6 features) including IP addresses and routing protocols is deleted from the interface.
  • When you disable an address family (IPv4 or IPv6 address family) in a VPN instance, configuration of the address family is deleted from the interface. No interface is bound to a VPN instance if no address family configuration exists in the VPN instance.

Perform the following steps on the PE devices.


  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The interface view is displayed.

  3. (Optional) On an Ethernet interface, run undo portswitch

    The interface is switched to Layer 3 mode.

    By default, an Ethernet interface works in Layer 2 mode.

  4. Run ip binding vpn-instance vpn-instance-name

    A VPN instance is bound to the interface.

    By default, an interface is a public network interface and is not associated with any VPN instance.

  5. Run ip address ip-address { mask | mask-length }

    An IP address is configured for the interface.

Updated: 2019-04-08

Document ID: EDOC1100065751

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