Allied Telesis AT-S39 - Manual (Page 122)

Chapter 13: VLAN Commands
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create vlan name=Service vid=16 ports=1,4,5-7
frame=untagged
Then, to add the other ports to the VLAN (in this case tagged ports), you
would use the ADD VLAN command.
Syntax 2 can create a VLAN of both tagged and untagged ports all in one
command. Here is the command that would create our example:
create vlan name=Service vid=16
untaggedports=1,4,5-7 taggedports=11,14
That’s the advantage of Syntax 2 over Syntax 1. You can create VLANs
containing both types of ports in one command rather than two
commands.