Create and setup a VLAN

conf t

enters into configuration mode

vlan 4

create vlan and enters into VLAN configuration mode

name Sales

give the Sales name for the created vlan 4

exit

int fa0/1

select an interface

switchport mode access

put the selected switch port into access mode

switchport access vlan 4

put the selected switch port into vlan 4

exit

exit from configuration mode

sh vlan

list VLAN-s

Revoke VLAN

no switchport access vlan

revoke VLAN membership of the port

no switchport mode access

revoke access mode of the port