difference between int vlan100 and vlan100 configs

[lcaruso]

Hi,

What's the difference between creating vlans like this?

interface vlan100

ip address ....

vlan 100

name test

ip address...

Thanks.

[Roman Rodichev · Accepted solution]

the int vlan100 creates  layer3 interface for routing

it requires creation of layer 2 vlan first, which is created with

vlan100 command

(there should not be "ip address" option here)

layer3 interface is not required unless you need to route

[lcaruso]

thanks. I must have been running some pretty old code. I was doing static routing with only the int vlan100 commands being used.

[Leo Laohoo · Accepted solution]

vlan 100
 name test

You are creating a VLAN instance in the VLAN database.

[lcaruso]

that explains this message...I never created the vlan100 artifact before creating the int vlan100

Switch(config-if)#switchport access vlan 100
% Access VLAN does not exist. Creating vlan 100

Thanks!