A.LDP B.MP-BGP C.OSPF D.L2TP
A.RT B.TE C.RE D.RD
A.節(jié)點(diǎn)設(shè)備可用率 B.節(jié)點(diǎn)設(shè)備的故障歷時(shí)和故障次數(shù) C.節(jié)點(diǎn)設(shè)備的故障歷時(shí)和故障次數(shù) D.故障歷時(shí)