Configuring Mpls L3Vpn Inter-As Option A - HP HPE FlexNetwork MSR Router Series Configuration Manual

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 inter-AS option A MPLS L3VPN, and use the VRF-to-VRF method to manage VPN routes.
Run OSPF on the MPLS backbone of each AS.
Figure 73 Network diagram
Table 16 Interface and IP address assignment
Device
CE 1
PE 1
ASBR-PE1
Configuration procedure
1. Configure IGP on the MPLS 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:
Interface IP address
GE2/0/1 10.1.1.1/24
Loop0 1.1.1.9/32
GE2/0/1 10.1.1.2/24
POS2/2/0 172.1.1.2/24
Loop0 2.2.2.9/32
POS2/2/0 172.1.1.1/24
POS2/2/1 192.1.1.1/24
Device
CE 2
PE 2
ASBR-PE2
258
Interface IP address
GE2/0/1 10.2.1.1/24
Loop0 4.4.4.9/32
GE2/0/1 10.2.1.2/24
POS2/2/0 162.1.1.2/24
Loop0 3.3.3.9/32
POS2/2/0 162.1.1.1/24
POS2/2/1 192.1.1.2/24