IOS : Extended VLAN(s) not allowed in current VTP mode

By | October 7, 2016

Having the following output message while trying to create a VLan outside higher than 1000 on your Cisco device?

This mean that you are running VTP mode 1 or 2, which only support VLan range between 1 – 1000. To be able to create anything outside of that scope, you need to run VTP in transparent mode.

You can verify the current VTP status issuing the following command :

Output example :

If you do not require VTP at all, simply put this setting to “transparent mode” as followed :

Output example :

You may now create the VLan and write changes to memory.