单项选择题
A.LDP and RSVP B.RSVP and CEF C.CEF and the FIB table D.UDP and IP E.A and B
A.LSA type 1 B.LSA type 2 C.LSA type 7 D.LSA type 3 E.LSA type 9 F.LSA type 5
A.Packet mode B.Frame mode C.Transparent mode D.Channel mode E.Tunnel mode