Bgp Mpls Ip Vpn Configuration - Huawei quidway s7700 Configuration Manual

Quidway S7700 Smart Routing Switch
Configuration Guide - VPN
3
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 S7700
The S7700 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
A VPN instance isolates VPN routes from public network routes.
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 networking of Hub and Spoke, 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 OptionB, through MP-EBGP, two ASBRs receive VPNv4 routes from PEs in
their respective ASs and then exchange the VPNv4 routes with each other.
3.8 Configuring HoVPN
HoVPN indicates a hierarchical VPN, in which multiple PEs play different roles and form a
hierarchical structure. In this manner, these PEs function as one PE, and the performance
requirement for PEs are lowered.
3.9 Configuring OSPF Sham Link
Issue 01 (2011-07-15)

BGP MPLS IP VPN Configuration

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