Allied Telesis AT-S39 - Manual (Page 118)

Chapter 13: VLAN Commands
118
Note
To remove ports from a VLAN, see the command DELETE VLAN.
This command has two syntaxes, just like the CREATE VLAN command.
You can use either command to add ports to a VLAN. The difference
between the two is that Syntax 1 can add only one type of port, tagged
or untagged, at a time to a VLAN, while Syntax 2 can add both in the
same command. This is illustrated in Examples below.
When you add untagged ports of a VLAN, the ports are automatically
removed from their current untagged VLAN assignment. This is because
a port can be an untagged member of only one VLAN at a time. For
example, if you add Port 4 as an untagged port to a VLAN, the port is
automatically removed from whichever VLAN it is currently an untagged
member.
Adding a tagged port to a VLAN does not change the port’s current
tagged and untagged VLAN assignments. This is because a tagged port
can belong to more than one VLAN at a time. For instance, if you add
Port 6 as an tagged port to a new VLAN, Port 6 remains a member of any
current VLAN assignments as a tagged and untagged member.
Examples
The following command uses Syntax 1 to add Ports 4 and 7 as untagged
members to a VLAN called Sales:
add vlan name=sales port=4,7 frame=untagged
The following command does the same thing using Syntax 2:
add vlan name=sales untaggedports=4,7
The following command uses Syntax 1 to add Port 3 as a tagged
member to a VLAN called Production:
add vlan name=production port=3 frame=tagged
The following command does the same thing using Syntax 2:
add vlan name=production untaggedports=3
To add both tagged and untagged ports to a VLAN using Syntax 1 takes
two commands. For example, if you had a VLAN called Service and you
wanted to add Port 5 as a tagged port and Ports 10 to 12 as untagged
ports, the commands would be:
add vlan name=Service ports=5 frame=tagged
add vlan name=Service ports=10-12 frame=untagged