3Com MSR 50 Series Configuration Manual page 1514

1514 C 79: MPLS L3VPN C
HAPTER
n
ONFIGURATION
Network diagram
Figure 424 Configure inter-provider VPN option A
MPLS backbone
AS 100
POS 5/0
Loop0
POS 5/0
PE 1
Eth1/1
Eth1/0
CE 1
AS 65001
Device Interface
CE 1 Eth 1/0
PE 1 Loop0
Eth 1/1
POS 5/0
ASBR-PE1 Loop0
POS 5/0
POS 5/1
Configuration procedure
1 Configure IGP on the MPLS backbone, implementing the connectivity in the
backbone
This example uses OSPF. The detailed configuration steps are omitted.
The 32-bit loopback interface address used as the LSR ID needs to be advertised by
OSPF.
After you complete the above configurations, each ASBR PE and the PE in the
same AS should be able to establish OSPF adjacencies. Issuing the display ospf
peer command, you can see that the adjacencies reach the state of Full, and that
PEs can learn the loopback addresses of each other.
Each ASBR PE and the PE in the same AS should be able to ping each other.
2 Configure MPLS basic capability and MPLS LDP on the MPLS backbone to establish
LDP LSPs
# Configure MPLS basic capability on PE 1 and enable MPLS LDP on the interface
connected to ASBR PE 1.
Loop 0
POS5/1 POS 5/1
ASBR-PE 1 ASBR-PE 2
IP address Device
10.1.1.1/24 CE 2
1.1.1.9/32 PE 2
10.1.1.2/24
172.1.1.1/24
2.2.2.9/32 ASBR-PE2
172.1.1.1/24
192.1.1.1/24
MPLS backbone
Loop 0
AS 200
POS 5/0
Loop 0
POS 5/0
PE 2
Eth1/1
Eth1/0
CE 2
AS 65001
Interface
Eth 1/0
Loop0
Eth 1/1
POS 5/0
Loop0
POS 5/0
POS 5/1
IP address
10.2.1.1/24
4.4.4.9/32
10.2.1.2/24
162.1.1.1/24
3.3.3.9/32
162.1.1.1/24
192.1.1.2/24