GigabitEthernet3/0/0 VLANIF 50 100.2.4.2/24
Loopback1 4.4.4.9/32
P1 GigabitEthernet1/0/0 VLANIF 10 100.1.2.2/24
GigabitEthernet2/0/0 VLANIF 20 100.2.3.1/24
GigabitEthernet3/0/0 VLANIF 50 100.2.4.1/24
Loopback1 2.2.2.9/32
P2 GigabitEthernet1/0/0 VLANIF 20 100.2.3.2/24
GigabitEthernet2/0/0 VLANIF 30 100.3.4.1/24
GigabitEthernet3/0/0 VLANIF 40 100.1.3.2/24
Loopback1 3.3.3.9/32
CE1 GigabitEthernet1/0/0 VLANIF 60 10.1.1.1/24
CE2 GigabitEthernet2/0/0 VLANIF 70 10.2.1.1/24
As shown in Figure 3-12, PE1, PE2, P1, and P2 are on the backbone network AS100. CE1 and
CE2 belong to VPNA. Select P1 and P2 as the RRs of the VPN.
Configuration Roadmap
The configuration roadmap is as follows:
1. Set up MP-IBGP adjacencies between the PEs and RRs.
2. Set up EBGP adjacencies between the PE and CEs.
3. Enable MPLS LSP on the public tunnel and enable MPLS LDP on the devices and interfaces
along the tunnel.
4. Configure P1 and P2 to be the backup of each other and configure the same RR ID for them.
5. P1 and P2 need to store all VPNv4 routing information and advertise the routing information
to PEs, so configure P1 and P2 to accept all the VPNv4 routing information without filtering
the routing information based on VPN targets.
NOTE
At least two paths that do not use the same network segment and node must exist between the RR and PE;
otherwise, the double RRs are unnecessary.
Data Preparation
To complete the configuration, you need the following data:
l ID of the VLAN that each interface belongs to and IP address of each interface, as shown
in Figure 3-12
l MPLS LSR-IDs of PE and ASBR-PEs
l Names, RDs, and VPN targets of the VPN instances created on PE1 and PE2
l Routing protocol used to exchange routing information between the PE and CEs (EBGP is
used in this example)
3 BGP/MPLS IP VPN Configuration
Quidway S9300 Terabit Routing Switch
Configuration Guide - VPN
3-148 Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 03 (2009-08-20)
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