A.E1J1 B.XSJ2 C.XCUJ1 D.XCUJ2
A.show interface vlan xxxx B.show vlan xxxx C.show vlan interfacexxxx D.show vlan
A.該單板被拔了出來或未插好 B.該槽位所插單板類型錯誤 C.該板與SCC板郵箱通信中斷 D.子架電源接反