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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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Configuring MP-EBGP Between ASBRs in Different ASs

Configuring MP-EBGP Between ASBRs in Different ASs


In inter-AS VPN Option B, you need not create VPN instances on ASBRs. The ASBR does not filter the VPNv6 routes received from the PE in the same AS based on VPN targets. Instead, it advertises the received routes to the peer ASBR through MP-EBGP.

In the switch, an ASBR can only change the next-hop address of a VPNv6 route to the ASBR's address before advertising the route to a PE.

Perform the following steps on the ASBR.


  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The view of the interface connected to the ASBR interface is displayed.

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

    The IPv4 address of the interface is configured.

  4. Run mpls

    MPLS is enabled on the interface.

  5. Run quit

    Return to the system view.

  6. Run bgp { as-number-plain | as-number-dot }

    The BGP view is displayed.

  7. Run peer ipv4-address as-number as-number

    The peer ASBR is specified as the EBGP peer.

  8. Run ipv6-family vpnv6

    The BGP IPv6 VPN address family view is displayed.

  9. Run peer ipv4-address enable

    The exchange of VPN-IPv6 routes with the peer ASBR is enabled.

Updated: 2019-04-08

Document ID: EDOC1100065751

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