N-Tron 708M12 user manual 142

The ports of ‖New VLAN‖ may be added back to ―Default VLAN‖ to create overlapping VLANs.

Note: If there are multiple ports on different VLANs, the 708 will apply the static multicast address to the lowest VLAN-ID that is associated with one of the ports assigned to the static multicast address. If the lowest VLAN-ID contains all the ports assigned to the static multicast address (an umbrella VLAN), it will function for all those ports with no problems. This can be achieved with overlapping VLANs.

But notice that the ports in ―New VLAN‖ are not marked as ―Untag on Egress‖ and are thus still tagged.

And the ―New VLAN‖ may be deleted when it is no longer required:

(Revised 2010-11-15) Page 142 of 156