Figure 89: Fully Meshed VPNs
BGP sessions exist between PE 1 and PE 2, PE 2 and PE 3, and PE 3 and PE 1. The
MPLS paths through the service provider core are omitted for clarity.
To configure route targets for this fully meshed scenario, you specify the same route
target for the import list and export list on all VRFs in VPN A. The VRFs in VPN B use
a different route target, but it is the same for the import list and export list for all.
Route-target configuration on PE 1:
host1(config)#virtual-router newyork
host1:newyork(config)#ip vrf vrfA
host1:newyork(config-vrf)#route-target both 777:1
host1:newyork(config-vrf)#exit
host1:newyork(config)#ip vrf vrfB
host1:newyork(config-vrf)#route-target both 777:2
Route-target configuration on PE 2:
host2(config)#virtual-router boston
host2:boston(config)#ip vrf vrfC
host2:boston(config-vrf)#route-target both 777:1
host2:boston(config-vrf)#exit
host2:boston(config)#ip vrf vrfD
host2:boston(config-vrf)#route-target both 777:2
Route-target configuration on PE 3:
424 â– Configuring BGP VPN Services
JUNOSe 11.1.x BGP and MPLS Configuration Guide
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