en
dir flash:
delete flash:vlan.dat

erase start

reload

en
vlan database
vlan 10 name student
vlan 20 name staff
exit

conf t
int fa0/1
switchport mode trunk

int fa0/2
switchport access vlan 10

int range fa0/3 - 4
switchport access vlan 20
exit
exit

en
vlan database
vtp server
vtp domain apple
vtp password pear
exit

show vtp status
show vlan

(Erase switch first)

en
vlan database
vtp client
vtp domain apple
vtp password pear
exit

show vtp status
show vlan

(Dont forget to set port data)

conf t
interface FastEthernet0/24
switchport mode access
switchport port-security
switchport port-security maximum 1
switchport port-security mac-address sticky
exit

interface range fa0/1 - 12
switchport mode access
switchport port-security
switchport port-security maximum 1
switchport port-security mac-address sticky/H.H.H
exit

exit

conf t
errdisable recovery cause psecure-violation
errdisable recovery interval 300
exit

recovery interval is in seconds, default being 300

Switchport port-security violation protect shutdown - (default) - disables the port on vilolation
Switchport port-security violation protect - drops packet
Switchport port-security violation protect restrict - drops packet and increment violation counter

Show port-security int fa0/1 – shows port security details
Show port-security address – shows addresses configured