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Configuration Guide - VPN

S1720, S2700, S5700, and S6720 V200R010C00

This document describes the VPN configuration procedures and provides configuration examples.
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Establishing MP-IBGP Peer Relationships Between PE Devices

Establishing MP-IBGP Peer Relationships Between PE Devices

Context

Perform the following steps on the PE devices.

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    bgp { as-number-plain | as-number-dot }

    The BGP view is displayed.

  3. Run:

    peer ipv4-address as-number as-number

    The peer PE is configured as a BGP peer.

  4. Run:

    peer ipv4-address connect-interface loopback interface-number

    An interface is used to set up a Transmission Control Protocol (TCP) connection with the BGP peer.

    NOTE:

    A PE must use a loopback interface address with a 32-bit mask to set up an MP-IBGP peer relationship with the peer PE so that VPN routes can be iterated to tunnels. The route to the local loopback interface is advertised to the peer PE using an IGP on the MPLS backbone network.

  5. Run:

    ipv4-family vpnv4 [ unicast ]

    The BGP-VPNv4 address family view is displayed.

  6. Run:

    peer ipv4-address enable

    The ability to exchange VPN IPv4 routes with the BGP peer is enabled.

Related Tasks

When a large number of PE devices on the backbone network need to establish MP-IBGP peer relationships to exchange VPN routes, configure a route reflector (RR) to reduce the number of MP-IBGP connections between PE devices. The PE devices only need to establish MP-IBGP peer relationships with the RR. For detailed configuration, see Configuring Route Reflection to Optimize the VPN Backbone Layer.

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Updated: 2019-08-21

Document ID: EDOC1000141944

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