Huawei AR1200 Series - 3 BGP MPLS IP VPN Configuration

3 BGP MPLS IP VPN Configuration
About This Chapter
This chapter describes the BGP/MPLS IP VPN configuration, including the introduction to the
BGP/MPLS IP VPN, common networking of the BGP/MPLS IP VPN, and configurations to
ensure the reliability of the BGP/MPLS IP VPN.
3.1 Introduction to BGP/MPLS IP VPN
This section describes the concepts and roles of the PE, P, and CE.
3.2 BGP/MPLS IP VPN Features Supported by the AR1200
The AR1200 supports basic and typical networking of the BGP/MPLS IP VPN, and such features
as reliability and QoS of the BGP/MPLS IP VPN.
3.3 Configuring a VPN Instance Enabled with the IPv4 Address Family
A VPN instance isolates VPN routes from public network routes. Configuring a VPN instance
enabled with the IPv4 address family allows a PE to advertise IPv4 routes and forward data.
3.4 Configuring Basic BGP/MPLS IP VPN
The basic BGP/MPLS IP VPN refers to a VPN that is established on one SP's MPLS backbone
network that does not span multiple ASs. The role of each PE, P, or CE of the basic BGP/MPLS
IP VPN is unique. For example, a router cannot function as both a PE and a CE.
3.5 Configuring Hub and Spoke
In the Hub and Spoke networking, an access control device is specified in the VPN, and users
communicate with each other through the access control device.
3.6 Configuring Inter-AS VPN Option A
In inter-AS VPN OptionA, an ASBR takes the peer ASBR as its CE and advertises VPNv4 routes
to the peer ASBR through EBGP.
3.7 Configuring Inter-AS VPN Option B
In inter-AS VPN Option B through MP-EBGP, two ASBRs receive VPNv4 routes from PEs in
their respective ASs and exchange the VPNv4 routes with each other.
3.8 Configuring Inter-AS VPN Option C (Solution 1)
EBGP connections in multi-hop mode are established between PEs of different ASs to exchange
VPNv4 routes.
3.9 Configuring Inter-AS VPN Option C (Solution 2)
Huawei AR1200 Series Enterprise Routers
Configuration Guide - VPN 3 BGP MPLS IP VPN Configuration
Issue 01 (2012-04-20) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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