no shutdown はコンフィグ上表示されないんですよ。ルータの実機例ですがスイッチでも同じです。

Router#sh ip int br g0/0
Interface                  IP-Address      OK? Method Status                Protocol
GigabitEthernet0/0         unassigned      YES unset  administratively down down
Router#sh run int g0/0
Building configuration...

Current configuration : 103 bytes
!
interface GigabitEthernet0/0
 no ip address
 shutdown
 duplex auto
 speed auto
 media-type rj45
end

Router#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#int g0/0
Router(config-if)#no shutdown
Router(config-if)#end
Router#sh ip int br g0/0
Interface                  IP-Address      OK? Method Status                Protocol
GigabitEthernet0/0         unassigned      YES unset  up                    up
Router#sh run int g0/0
Building configuration...

Current configuration : 93 bytes
!
interface GigabitEthernet0/0
 no ip address
 duplex auto
 speed auto
 media-type rj45
end