Allied Telesis AT-8100 Series - Manual (Page 920)

Chapter 60: Port-based and Tagged VLANs
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Removing Untagged Ports from VLANs
To remove untagged ports from their current VLAN assignments and
return them back to the Default VLAN, use the NO SWITCHPORT
ACCESS VLAN command in the Port Interface mode. You do not specify
a VLAN ID number in the command because a port can be an untagged
member of just one VLAN at a time. The switch removes the designated
port from whichever VLAN it is an untagged member and returns it back to
the Default_VLAN.
You can remove more than one port at a time from a VLAN, and the same
command can be used to remove untagged ports from different VLANs.
This example removes untagged port 5 from its current VLAN assignment
and returns it to the Default_VLAN:
awplus> enable
awplus# configure terminal
awplus(config)# interface port1.0.5
awplus(config-if)# no switchport access vlan
This example removes untagged ports 10 to 14 from their current VLAN
assignments and returns them to the Default_VLAN. This example works
even if the ports are untagged members of different VLANs.
awplus> enable
awplus# configure terminal
awplus(config)# interface port1.0.10-port1.0.14
awplus(config-if)# no switchport access vlan