R211x-HP Flexfabric 11900 MPLS Configuration Guide
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Configuration procedure
1. Configuring basic MPLS L3VPN:
{ Configure OSPF on the MPLS backbone to allow the PEs and P device to learn the routes of the
loopback interfaces from each other.
{ Configure basic MPLS and MPLS LDP on the MPLS backbone to establish LDP LSPs.
{ Establish MP-IBGP peer relationship between the PEs to advertise VPNv4 routes.
{ Configure the VPN instance of VPN 1 on PE 2 to allow CE 2 to access the network.
{ Configure the VPN instance of VPN 1 on PE 1 to allow CE 1 to access the network.
{ Configure BGP between PE 1 and CE 1, and between PE 2 and CE 2 and redistribute routes of
CEs into PEs.
For more information about basic MPLS L3VPN configurations, see "Configuring basic MPLS
L3VPN."
# Execute the display ip
routing-table command on CE 2 to verify that CE 2 has learned the route
to network 10.1.1.0/24, where the interface used by CE 1 to access PE 1 resides, but it has not
learned the route to the VPN (100.1.1.0/24) behind CE 1. The situation on CE 1 is similar.
<CE2> display ip routing-table
Destinations : 17 Routes : 17
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 BGP 255 0 10.2.1.2 Vlan12
10.2.1.0/24 Direct 0 0 10.2.1.1 Vlan12
10.2.1.0/32 Direct 0 0 10.2.1.1 Vlan12
10.2.1.1/32 Direct 0 0 127.0.0.1 InLoop0
10.2.1.255/32 Direct 0 0 10.2.1.1 Vlan12
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
200.1.1.0/24 Direct 0 0 200.1.1.1 Vlan13
200.1.1.0/32 Direct 0 0 200.1.1.1 Vlan13
200.1.1.1/32 Direct 0 0 127.0.0.1 InLoop0
200.1.1.255/24 Direct 0 0 200.1.1.1 Vlan13
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
# Execute the display ip routing-table vpn-instance command on the PEs. The output shows the
route to the VPN behind the peer CE. Take PE 2 as an example:
<PE2> display ip routing-table vpn-instance vpn1
Destinations : 15 Routes : 15
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 BGP 255 0 1.1.1.9 Vlan11