Enterasys N Standalone (NSA) Series Configuration Manual page 600

VLAN Configuration Command Set
Configuring the VLAN Egress List
This example shows how to forbid Fast Ethernet ports 13 through 15 in port group 1 from joining
VLAN 7 and disallow egress on those ports:
Matrix(rw)->set vlan egress 7 fe.1.13-15 forbidden
This example shows how to allow Fast Ethernet port 2 in port group 1 to transmit VLAN 7 frames
:
as untagged
Matrix(rw)->set vlan egress 7 fe.1.2 untagged
7-28 Matrix NSA Series Configuration Guide