Changed to ports fa 0/16 to 21


interface FastEthernet0/16
 switchport mode dynamic desirable
 switchport protected
 spanning-tree portfast
!
interface FastEthernet0/17
 switchport mode dynamic desirable
 switchport protected
 spanning-tree portfast
!
interface FastEthernet0/18
 switchport mode dynamic desirable
 switchport protected
 spanning-tree portfast
!
interface FastEthernet0/19
 switchport mode dynamic desirable
 switchport protected
 spanning-tree portfast
!
interface FastEthernet0/20
 switchport mode dynamic desirable
 switchport protected
 spanning-tree portfast
!
interface FastEthernet0/21
 switchport mode dynamic desirable
 switchport protected
 storm-control broadcast level 50.00
 storm-control multicast level 62.00
 spanning-tree portfast
!