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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 an Interface to the VPN Instance

Binding an Interface to the VPN Instance

Context

The configuration on the Hub-PE involves two interfaces or sub-interfaces: one is bound to the VPN-in and receives the routes advertised by the Spoke-PE; the other is bound with the VPN-out and advertises the routes of the Hub and all the Spokes.

  • After configuring a VPN instance on a PE, bind the interface that belongs to the VPN to the VPN instance. If the interface belonging to the VPN is not bound to the VPN instance, the interface functions as a public network interface and cannot forward VPN data.
  • An interface becomes a private network interface after being bound to a VPN instance. You must configure an IP address for the interface so that the PE can exchange routing information with its connected CE.
  • After an interface is bound to a VPN instance, configuration of 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, the address family is deleted from the interface. If no address family is configured on the interface, the interface is unbound from the VPN instance.

Perform the following steps on the Hub-PE and all the Spoke-PEs.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The view of the interface to be bound to a VPN instance 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

    The interface is bound to the VPN instance.

  5. Run ipv6 enable

    IPv6 is enabled on the interface.

    private network interface

  6. Run ipv6 address { ipv6-address prefix-length | ipv6-address/prefix-length }

    An IPv6 address is configured for the interface.

    Some Layer 3 features such as route exchange between the PE and CE can be configured only after an IPv6 address is configured for the private network interface on the PE.

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Updated: 2019-04-08

Document ID: EDOC1100065751

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