s1(config)#----->modban kell kiadni

vlan 10

S1(config-vlan)#

name VLAN A
exit

vlan 20

S1(config-vlan)#

name VLAN B
exit

vlan 30

S1(config-vlan)#

name VLAN C
exit

interface fa0/1-8

S1(config-if)#

switchport mode access
switchport access vlan 10
exit

interface fa0/9-16

S1(config-if)#

switchport mode access
switchport access vlan 20
exit

interface fa0/17-24

S1(config-if)#

switchport mode access
switchport access vlan 30
exit