Why can i not create a tagged vlan on summit x350-48t

[Crypt-switch]

I am in the process of reverse engineering a network that I have no passwords to the switches.  I Am trying to become familiar with the extrema OS. I do not understand why I can create a tag Vlan on my x460 but not on my x350e. If you have any good   Resources on extreme switches I would highly appreciate it.

[Stefan_K_]

If you already have created several VLANs you can ofc add the tag afterwards.

configure vlan <vlan-name> tag <desired vlan id>

[PeterK]

In EXOS, you are able to create a vlan “without” an ID (Tag). In this case you can’t add it as tagged to a port.

create vlan <name> tag <VLAN-ID>
configure vlan <name> add ports <Port> tagged

[Stefan_K_]

I’m not so familiar with older Extreme Switches, especially if they run very old EXOS. But do you receive any error message when you create the vlan?

Regarding Resources: https://www.extremenetworks.com/support/documentation/