ESwitching SBA Answer by MamanJosh:

KOREKSI Untuk STEP7 khusus pada fa 0/0.43 seharusnya seperti ini:

Router1(config)#interface fastEithernet 0/0.43

Router1(config-subif)#encapsulation dot1Q43 native

Router1(config-subif)#ip address 172.16.43.1 255.255.255.0

Router1(config-subif)#exit