SW1#vlan database
SW1(Vlan)#vlan 12</p>
VLAN 12
Name: VLAN0012
SW1(Vlan)#vlan 23
VLAN 23
Name: VLAN0023
SW1(Vlan)#vlan 32
VLAN 32
Name: VLAN0032
SW1(Vlan)#vlan 34
VLAN 34
Name: VLAN0034
SW1(Vlan)#exit
SW1#config t
SW1(config)#int range f1/1 - 4
SW1(config-if-range)# switchport trunk encap dot1q
SW1(config-if-range)#switchport mode trunk