I think Antonio is right. RD and RTs are parts of VRF. P routers are unaware about the VRFs,they only carry labels. In MPLS VPN environment LSR routers carry two types of labels. VRFs are checked at the PE routers. PE routers exchange VRFs routes by MPBGP.
Jean-Marie NGOK
IT Consultant
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
