Within the service provider IP/MPLS core network, what must be implemented to enable Layer 3
MPLS VPN services?
A.
IS-IS or OSPF on all the PE and P routers
B.
MP-BGP between the PE routers
C.
RSVP on all the PE and P routers
D.
targeted LDP between the PE routers
E.
LDP between the CE and PE routers
Explanation: