Cisco Switch: How To Create A VLAN On The Older Catalyst Switches

This still gets me on occasion.  On these older Catalyst Cisco switches, like the 2900 and the 3550, you still have to create the vlan in the vlan database before passing data will work ON THAT VLAN.  I ran into this recently again.  Gets me a lot.

Here is how you create the VLAN on the older switches:
OldSwitch#vlan database
OldSwitch(vlan)#vlan 2
VLAN 2 added:
    Name: VLAN0002
OldSwitch(vlan)#exit
APPLY completed.
Exiting....

Now go into config t and create the vlan with the 'interface vlan 2' command.