R2511-HP MSR Router Series MPLS Configuration Guide(V5)

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MPLS L3VPN configuration examples
Configuring MPLS L3VPNs using EBGP between a PE and a CE
Network requirements
CE 1 and CE 3 belong to VPN 1. CE 2 and CE 4 belong to VPN 2.
VPN 1 uses route target attribute 111:1. VPN 2 uses route target attribute 222:2. Users of different VPNs
cannot access each other.
A PE and its connected CE use EBGP exchange VPN routing information.
PEs use OSPF to communicate with each other and use MP-IBGP to exchange VPN routing information.
Figure 57 Network diagram
Device Interface IP address Device Interface IP address
CE 1 Eth 1/1 10.1.1.1/24 P Loop0 2.2.2.9/32
PE 1 Loop0 1.1.1.9/32 POS 5/0 172.1.1.2/24
Eth 1/1 10.1.1.2/24 POS 5/1 172.2.1.1/24
Eth 1/2 10.2.1.2/24 PE 2 Loop0 3.3.3.9/32
POS 5/0 172.1.1.1/24 Eth 1/1 10.3.1.2/24
CE 2 Eth 1/1 10.2.1.1/24 Eth 1/2 10.4.1.2/24
CE 3 Eth 1/1 10.3.1.1/24 POS 5/0 172.2.1.2/24
CE 4 Eth 1/1 10.4.1.1/24
Configuration procedure
1. Configure an IGP on the MPLS backbone to ensure IP connectivity within the backbone:
# Configure PE 1.
<PE1> system-view
[PE1] interface loopback 0
[PE1-LoopBack0] ip address 1.1.1.9 32
[PE1-LoopBack0] quit
CE 1
Loop0
Loop0 Loop0
PE 1
PE 2
Eth1/1
Eth1/1
Eth1/2
Eth1/1
POS5/0
Eth1/1
Eth1/2
Eth1/1
Eth1/1
CE 3
CE 2
CE 4
POS5/0 POS5/1
POS5/0
VPN 1
VPN 1
VPN 2
VPN 2
MPLS backbone
AS 65410 AS 65430
AS 65420
AS 65440
P