You are writing the requirements for an MPLS L3VPN environment that uses MP-BGP between PE routers. In this environment, route targets and route distinguishers need to be advertised between the PE routers.
Which three operations meet these requirements? (Choose three.)
A. mandatory creation of PE-to-PE BGP sessions between the outgoing interface IP addresses
B. advertisement of standard communities, enabled on the PE-to-PE BGP neighbors
C. creation of PE-to-PE BGP sessions between loopback IP addresses
D. full mesh of IBGP sessions
E. full mesh of EBGP sessions and partial mesh of IBGP sessions
F. advertisement of extended communities, enabled on the PE-to-PE BGP neighbors
