Interface FastEthernet0/2 set to default configuration
SW2(config)#int fas0/2
SW2(config-if)#switchport trunk encapsulation dot1q
SW2(config-if)#switchport mode trunk
SW2(config-if)#switchport port-security maximum 50 vlan 123
SW2(config-if)#switchport port-security violation restrict
SW2(config-if)#switchport port-security
SW2(config-if)#do show run in fas 0/2
!
interface FastEthernet0/2
switchport trunk encapsulation dot1q
switchport mode trunk
switchport port-security maximum 50 vlan 123
switchport port-security
switchport port-security violation restrict
shutdown
end
