What is the best approach if you are going to do inter-VRF routing?
All of my PEs are connected to a PE-Internet, PE-Internet is forwarding .1Q tagged (per VRF sub-interfaces, so all VRFs are being terminated on PE internet) traffic to PIX firewall, which is doing NAT (internet connectivity) and inter-VRF routing.
Some people suggest better you import/export all the VRFs on PEs. I did not find a single source which suggests such a topology that you configure all the VRFs on your PEs just for inter-VRF routing.
What do you guys suggest, which model is best for inter-VRF routing, if you have network topology like this.