Figure 89: Fully Meshed Vpns - Juniper BGP - CONFIGURATION GUIDE V 11.1.X Configuration Manual

JUNOSe 11.1.x BGP and MPLS Configuration Guide

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:
Route-target configuration on PE 2:
Route-target configuration on PE 3:
424
Configuring BGP VPN Services
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
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