218
Destination/Mask Proto Pre Cost NextHop Interface
0.0.0.0/32 Direct 0 0 127.0.0.1 InLoop0
10.1.1.0/24 Direct 0 0 10.1.1.2 Vlan2
10.1.1.0/32 Direct 0 0 10.1.1.2 Vlan2
10.1.1.2/32 Direct 0 0 127.0.0.1 InLoop0
10.1.1.255/32 Direct 0 0 10.1.1.2 Vlan2
10.2.1.0/24 BGP 255 0 2.2.2.9 Vlan4
10.3.1.0/24 BGP 255 0 2.2.2.9 Vlan4
10.4.1.0/24 BGP 255 0 2.2.2.9 Vlan4
127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0
127.0.0.0/32 Direct 0 0 127.0.0.1 InLoop0
127.0.0.1/32 Direct 0 0 127.0.0.1 InLoop0
127.255.255.255/32 Direct 0 0 127.0.0.1 InLoop0
224.0.0.0/4 Direct 0 0 0.0.0.0 NULL0
224.0.0.0/24 Direct 0 0 0.0.0.0 NULL0
255.255.255.255/32 Direct 0 0 127.0.0.1 InLoop0
# Verify that Spoke-CE 1 and Spoke-CE 2 can ping each other. The TTL value indicates that traffic from
Spoke-CE 1 to Spoke-CE 2 passes six hops (255-250+1) and is forwarded through Hub-CE. This example
uses Spoke-CE 1 to verify their connectivity.
[Spoke-CE1] ping 10.2.1.1
Ping 10.2.1.1 (10.2.1.1): 56 data bytes, press CTRL_C to break
56 bytes from 10.2.1.1: icmp_seq=0 ttl=250 time=1.000 ms
56 bytes from 10.2.1.1: icmp_seq=1 ttl=250 time=2.000 ms
56 bytes from 10.2.1.1: icmp_seq=2 ttl=250 time=0.000 ms
56 bytes from 10.2.1.1: icmp_seq=3 ttl=250 time=1.000 ms
56 bytes from 10.2.1.1: icmp_seq=4 ttl=250 time=0.000 ms
--- Ping statistics for 10.2.1.1 ---
5 packet(s) transmitted, 5 packet(s) received, 0.0% packet loss
round-trip min/avg/max/std-dev = 0.000/0.800/2.000/0.748 ms
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.