3Com MSR 50 Series Configuration Manual page 1509

Network diagram
Figure 423 Configure MPLS L3VPNs using a GRE tunnel
POS5 /0
Loop 0
POS5 /1
PE 1
Tunnel0
Eth1/0
Eth1/0
CE 1
VPN 1
AS 65410
Device Interface
CE 1 Eth 1/0
PE 1 Loop0
Eth 1/0
POS 5/1
Tunnel0
CE 2 Eth 1/0
Configuration procedure
1 Configure IGP on the MPLS backbone, enabling the PEs and the P device to
communicate
This example uses OSPF. The detailed configuration steps are omitted.
After you complete the above configurations, OSPF adjacency should be
established between PE 1, P, and PE 2. Issuing the display ospf peer command,
you can see that the adjacency status is Full. Issuing the display ip routing-table
command, you can see that the PEs have learned the loopback route of each
other.
2 Enable MPLS basic capability on the PEs
# Configure PE 1.
<PE1> system-view
[PE1] mpls lsr-id 1.1.1.9
[PE1] mpls
[PE1-mpls] quit
# Configure PE 2.
MPLS L3VPN Configuration Example
POS 5/1
P
Loop0
POS 5/0
GRE tunnel
Tunnel 0
AS 100
Eth1/0
VPN 1
AS 65420
IP address Device
10.1.1.1/24 P
1.1.1.9/32
10.1.1.2/24 PE 2
172.1.1.1/24
20.1.1.1/24
10.2.1.1/24
PE 2
Eth1/0
CE 2
Interface IP address
POS 5/0 172.1.1.2/24
POS 5/1 172.2.1.1/24
Loop0 2.2.2.9/32
Eth 1/0 10.2.1.2/24
POS 5/0 172.2.1.2/24
Tunnel0 20.1.1.2/24
1509