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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
Interface
IP address
Device
Interface
IP address
CE 1
GE2/0/1
10.1.1.1/24
CE 2
GE2/0/1
10.2.1.1/24
PE 1
Loop0
1.1.1.9/32
PE 2
Loop0
4.4.4.9/32
GE2/0/1
10.1.1.2/24
GE2/0/1
10.2.1.2/24
POS2/2/0
172.1.1.2/24
POS2/2/0
162.1.1.2/24
ASBR-PE1 Loop0 2.2.2.9/32 ASBR-PE2
Loop0 3.3.3.9/32
POS2/2/0
172.1.1.1/24
POS2/2/0
162.1.1.1/24
POS2/2/1
192.1.1.1/24
POS2/2/1
192.1.1.2/24
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:
Содержание HPE FlexNetwork MSR Router Series
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