CISCO: [No] Shutdown Command – Enable/Disable Interface

Below you will find the examples of how to bring up and down an interface on a CISCO switch or router.

On the CISCO command-line interface, there is the shutdown interface configuration command to disable an interface and the no shutdown command to enable it.

I will show the examples of these commands, as well as how to check an interface status using the show interfaces status command.

Cool Tip: There is nothing worse then trying to debug a network problem when the problematic interface is unlabeled! Always set the interface description! Read more →

“No Shutdown” Command – Enable Interface

To enable an interface FastEthernet 0/1 on a CISCO switch or router, run:

# enable
# configure terminal
(config)# interface FastEthernet 0/1
(config-subif)# no shutdown
(config-subif)# end
# write

To display a status of the interface FastEthernet 0/1, use the show interfaces FastEthernet 0/1 status command:

# show interfaces FastEthernet 0/1 status
Port    Name               Status       Vlan       Duplex  Speed Type
Fa0/1                     connected    15     full    100 10/100BaseTX

Cool Tip: Don’t let your CISCO device burn in torment! Check its temperature and the fan tray status! Read more →

“Shutdown” Command – Disable Interface

To disable an interface FastEthernet 0/1 on a CISCO switch or router, run:

# enable
# configure terminal
(config)# interface FastEthernet 0/1
(config-subif)# shutdown
(config-subif)# end
# write

To display a status of the interfaceFastEthernet 0/1, use the show interfaces FastEthernet 0/1 status command:

# show interfaces FastEthernet 0/1 status
Port    Name               Status       Vlan       Duplex  Speed Type
Fa0/1                     disabled    15     full    100 10/100BaseTX

3 Replies to “CISCO: [No] Shutdown Command – Enable/Disable Interface”

  1. Ошибка в начале статьи во втором абзаце shutdown(выкл) and no shutdown(вкл)

    1. Поправил. Спасибо.

    2. Hello Roman:

      How would you do this if the switch put in an enable prompt
      and I dont know the password for the enable login prompt.

      Thank you,
      Kurt

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