A.CE1 forwards the data packet to PE1 via the VPRN 20 interface.

B.PE1 pushes two labels on the IP packet: a BGP label and an LDP transport label.

C.CSC-CE1 pops the LDP label and swaps the BGP label.

D.CSC-PE1 pops the BGP label and pushes a VPN label and an MPLS transport label.

A.BGP/MPLS VPN

B.ePipe

C.VLL

D.IP-VPN

E.VPRN

F.VPLS

A.The ability to learn system addresses of network provider PEs.

B.The ability to offer Internet connectivity and a variety of services over a single CSC VPRN interface.

C.The ability to maintain its own backbone.

D.There is no need to manage end-customer services.

A.ASBR2 sends the IP packet with one label to ASBR1.

B.PE1 pops one label off the IP packet and forwards it to CE1.

C.PE2 pushes one label on the IP packet and forwards it to ASBR2.

D.ASBR1 sends the IP packet with one label to PEL

A.RSVP-TE has signaled a VPRN label.

B.RSVP-TE has signaled both VPRN and LSP labels.

C.MP-BGP has signaled both VPRN and LSP labels.

D.MP-BGP has signaled a VPRN label.