A.6PE feature is supported over tunnels other than RSVP-TE tunnels
B.Core MPLS routers are supporting IPv6 ONLY
C.6PE feature is not supported over tunnels other than RSVP-TE tunnels
D.Core MPLS routers are supporting IPv4 only

A.The virtual routing and forwarding table is separate from the global routing table that exists on PE routers. Routes are injected into the VRF from the CE-PE routing protocols for that VRF and any MP-BGP announcements that match the defined VRF RTs
B.Multiprotocol Border Gateway Protocol is run between PE and CE routers to exchange customer prefixes in a VPNv4 format
C.A customer edge router peers at Layer 3 to the provider edge. The PE-CE interface runs either a dynamic routing protocol （eBGP， RIPv2， EIGRP， OSPF） or a static routing protocol （Static， Connected）
D.VPNv4 address is the combination of the RT and customer IPv4 prefix. These VPNv4 prefixes are passed in MP-BGP