参考答案:up表示接口的配置状态是可用,down为不可用
Phy为up表示物理状态激活,down表示物理未连接或异常
A.show versio
B.show time
C.show this
D.show ru
A.show alarm
B.show logging alarm
C.show logging current alarm
D.show current alarm
A.show interface
B.show interface br
C.show ip interface br
D.show vlan
A.show running-config mpls-te
B.show running-config mpls-tp
C.show running-config mpls
D.show running-config mpls tunnel
A.show ip ospf neighbor
B.show ip neighbor
C.show ospf neighbor
D.show neighbor ospf
A.show ip inter br
B.show vlan
C.show interface vlan
D.show interface br
A.保护闭锁
B.保护信号失效
C.清除倒换
D.人工倒换