So, in the output of the "show interfaces" command on a Cisco switch or router you see the line "FastEthernet 0/0 is administratively down..." in the block for the interface you need (instead of FastEthernet 0/0 there will be the name of your interface).
How do you bring the interface up?
Bringing it up:
#config t
(config)# interface FastEthernet 0/0
(config-if)# no shutdown
Shutting it down:
#config t
(config)# interface FastEthernet 0/0
(config-if)# shutdown
Here, instead of FastEthernet 0/0, substitute the name of the interface you need.
Comments