... 1 MPLS VPN Topologies 1-2 MPLS VPN Topologies Copyright 2000, Cisco Systems, Inc. Simple VPN with Optimal Intra -VPN Routing Review Questions Answer the ... site (CentralVPN). One RT for CentralVPN->ClientVPN route propagation and another RT for all ClientVPN->CentralVPN. n How many route targets do you need for a central services VPN solution ... services VPN topology with simple VPN topology? We need one VRF per VPN for sites that have access to other sites in the customer VPN, but no access to the Central Services VPN, one VRF per VPN...