HPE FlexNetwork 5510 HI Series

209
Configuring MPLS L3VPN inter-AS option A
Network requirements
CE 1 and CE 2 belong to the same VPN. CE 1 accesses the network through PE 1 in AS 100, and
CE 2 accesses the network through PE 2 in AS 200.
Configure MPLS L3VPN inter-AS option A, and use the VRF-to-VRF method to manage VPN routes.
Run OSPF on the MPLS backbone in each AS.
Figure 64 Network diagram
Table 14 Interface and IP address assignment
Device
Interface
IP address
Device
Interface
IP address
CE 1 Vlan-int12 10.1.1.1/24 CE 2 Vlan-int12 10.2.1.1/24
PE 1 Loop0 1.1.1.9/32 PE 2 Loop0 4.4.4.9/32
Vlan-int12 10.1.1.2/24 Vlan-int12 10.2.1.2/24
Vlan-int11 172.1.1.2/24 Vlan-int11 162.1.1.2/24
ASBR-PE 1 Loop0 2.2.2.9/32 ASBR-PE 2 Loop0 3.3.3.9/32
Vlan-int11 172.1.1.1/24 Vlan-int11 162.1.1.1/24
Vlan-int12 192.1.1.1/24 Vlan-int12 192.1.1.2/24
Configuration procedure
1. Configure IGP on the MPLS backbone to implement the connectivity in the backbone:
This example uses OSPF. (Details not shown.)
# Execute the display ospf peer command to verify that each ASBR-PE has established an
OSPF adjacency in Full state with the PE in the same AS, and that PEs and ASBR-PEs in the
same AS have learned the routes to the loopback interfaces of each other. Verify that each
ASBR-PE and the PE in the same AS can ping each other. (Details not shown.)
2. Configure basic MPLS and MPLS LDP on the MPLS backbone to establish LDP LSPs:
Loop0 Loop0
Loop0 Loop0
Vlan-int12
CE 1 CE 2
AS 65001 AS 65002
PE 1
PE 2
ASBR-PE 2
ASBR-PE 1
MPLS backbone
MPLS backbone
AS 100
AS 200
Vlan-int12
Vlan-int12
Vlan-int12
Vlan-int11
Vlan-int11
Vlan-int12Vlan-int12
Vlan-int11
Vlan-int11