BPDU Guard on Switch STP

SW1 has 48 ports with 4 10 Gig ports on Port tengig 49,50,51,52
switch> enable
switch# configure terminal
switch(config)# hostname SW1
SW1(config)# interface tengig 0/49
SW1(config-if)# switchport mode trunk
SW1(config-if)# switchport encapsulation dot1q
SW1(config-if)# switcport trunk native vlan 99
SW1(config-if)# description Trunk port to SW2
SW1(config-if)# no shutdown
SW1(config-if)# exit
SW1(config)#
SW1(config)#
SW1(config)# int range gigten 0/50-52
SW1(config-if)# shutdown
SW1(config-if)# exit
SW1(config)#
SW1(config)# spanning-tree portfast default
SW1(config)# int range gig 0/1-48
SW1(config-if)# spanning-tree portfast bpduguard default
SW1(config-if)# exit
SW1(config)#
SW1(config)#