Allied Telesis AT-9000/28 - Deleting Vlans

Chapter 45: MAC Address-based VLANs
642 Section VII: Virtual LANs
Deleting VLANs
To delete MAC address-based VLANs from the switch, use the NO VLAN
command in the VLAN Configuration mode. You can delete only one
VLAN at a time. Here is the format of the command:
no vlan vid
This example deletes the VLAN with the VID 23:
awplus> enable
awplus# configure terminal
awplus(config)# vlan database
awplus(config-vlan)# no vlan 23