Hopefully the above diagram is clear enough. The topology from R1 u to R4 and R6 to R9 runs two VRFs CIA and FBI BGP runs between R6 and R9 only R5 does not take part in any VRF routing, there is a GRE tunnel between R4 and R6 R6 does inter-VRF routing Fx/x.11 … More BGP and VRF routing