Configure or Change Interface (access mode) VLAN on Cisco IOS

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This is simple and straight forward. Below snippets are from a Cisco 3120X Blade Switch.

Check the interface details on port Gi1/0/1.

ams-101-sw1>en
ams-101-sw1#sh run | begin interface GigabitEthernet1/0/1 
interface GigabitEthernet1/0/1
 switchport access vlan 
401
 switchport mode access
 link state group 1 downstream
 spanning-tree portfast
!

Okay, the port is configured with VLAN 401 right now. Let’s change it to VLAN 402. (Below command will change ports 1)

ams-101-sw1#conf t
ams-101-sw1(config)#int gi
1/0/1
ams-101-sw1(config-if)#switchport access vlan 
402
ams-101-sw1(config-if)#no sh
ams-101-sw1(config-if)#
exit

But if you want to configure it to multiple ports, you can use below command (this command will add ports 2-13 to VLAN 402)

ams-101-sw1#conf t
ams-101-sw1(config)#int range gi
1/0/2-13
ams-101-sw1(config-if-range)#switchport access vlan 
402
ams-101-sw1(config-if-range)#no sh
ams-101-sw1(config-if-range)#
exit

Now let’s verify the VLAN 402 members.

ams-101-sw1#sh vlan | include 402
VLAN Name         Status    Ports
407  Linux_Server active    Gi1/0/1, Gi1/0/2, Gi1/0/3, Gi1/0/4, Gi1/0/5,Gi1/0/6, Gi1/0/7, Gi1/0/8, Gi1/0/9, Gi1/0/10, Gi1/0/11, Gi1/0/12, Gi1/0/13, Po1

Check the running config for a specific interface (in this case we check Gi1/0/2).

ams-101-sw1#sh run | beg interface GigabitEthernet1/0/2 
interface GigabitEthernet1/0/2
 switchport access vlan 
402
 switchport mode access
 link state group 1 downstream
 spanning-tree portfas

And don’t forget to save your configuration.

ams-101-sw1#copy running-config startup-config

That’s it.

Herry Purnama

Technical Project Lead at T-Systems Malaysia

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