3.4.1 Establishing the Configuration Task
3.4.2 Configuring a VPN Instance
3.4.3 Binding an Interface to the VPN Instance
3.4.4 Configuring Routing Exchange Between PEs
3.4.5 Configuring Routing Exchange Between PE and CE
3.4.6 Checking the Configuration
3.4.1 Establishing the Configuration Task
Applicable Environment
The BGP/MPLS IP VPN networking mentioned in this section involves only a carrier and an
MPLS backbone network does not cross domains. The functions of the PE, the P, and the CE
are simple. They cannot function as both the PE and the CE.
Certain special BGP/MPLS IP VPN networking scenarios, such as HoVPN, multi-role host and
inter-provider VPN, need additional configurations. For details, see the related sections in this
chapter.
The key task when configuring the BGP/MPLS IP VPN is to manage the advertisement of VPN
routes on the MPLS backbone networks. The management also includes managing the routes
advertisement between the PE and the CE, and between the PEs.
For the route exchange between PEs, you can configure MP-IBGP. For the route exchange
between the PE and the CE, you can configure static routes, RIP multi-instance, OSPF multi-
instance, IS-IS multi-instance or BGP according to the networking situations. Generally, static
routes are used for route exchange between the CE and PE in a stub VPN.
NOTE
If a VPN receives only the routes advertised by non-PEs outside the local VPN and advertises the routes
to the PE, this VPN is called a transit VPN.
If the VPN receives only the locally advertised routes and the routes advertised by PEs, the VPN is called
a stub VPN.
Pre-configuration Tasks
Before configuring basic BGP/MPLS IP VPN functions, complete the following tasks:
l Configuring IGP on the MPLS backbone network (PEs and P) to realize the IP connectivity
of the backbone network
l Configuring the basic MPLS capability and MPLS LDP on the MPLS backbone network
(PEs and P)
l Setting up tunnels between PEs according to the tunnel policy
l Configuring the IP address of the interface connecting the CE to the PE
Data Preparation
To configure basic BGP/MPLS IP VPN functions, you need the following data.
3 BGP/MPLS IP VPN Configuration
Quidway S9300 Terabit Routing Switch
Configuration Guide - VPN
3-10 Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 03 (2009-08-20)
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