Allied Telesis AT-9000 Series - Manual (Page 731)

AT-9000 Switch Command Line User’s Guide
703
This example designates ports 11 to 18 as untagged ports of a VLAN with
the VID 4. The SWITCHPORT MODE ACCESS command is omitted
because the example assumes the ports are already designated as
untagged ports:
awplus> enable
awplus# configure terminal
awplus(config)# interface port1.0.11-port1.0.18
awplus(config-if)# switchport access vlan 4