It is explained to us that RTs are used to tell a receiving PE router which VRF to place received iBGP routes.
Isnt that RD enough to accomplish this for INTRA-vpn control plane convergence?
PE1 and PE2 will have the same VRFs configured for customers that traverse both routers.
PE1 and PE2 configs
So, if PE2 advertises vpn A and vpn B prefixes to PE1 wth the rd prepending the ipV4 NLRI, shouldnt PE 1 automatically know in which VRF to place the received prefix just by examining the RD? Why the RT?
I can see the need for an RT for inter-vpn traffic (A to B) or third part (A to C and B to C)...