Enable tagging on the ports before configuring Untagged VLANs.
default encapsulation dot1q
default encapsulation dot1q port {slot/port[/sub-port][-slot/port[/sub-port]][,...][slot/all][all]}
encapsulation dot1q
encapsulation dot1q port {slot/port[/sub-port][-slot/port[/sub-port]][,...][slot/all][all]}
no encapsulation dot1q
no encapsulation dot1q port {slot/port[/sub-port][-slot/port[/sub-port]][,...][slot/all][all]}
Identifies the slot and port in one of the following formats:
a single slot and port (slot/port)
a range of slots and ports (slot/port-slot/port)
a series of slots and ports (slot/port,slot/port,slot/port)
all ports on the same slot (slot/all)
all ports on the switch (all)
None
GigabitEthernet Interface Configuration