#Configure Trunk Port on Switch
Switch#configure terminal
Switch(config)#interface fa0/1
Switch(config-if)#switchport trunk encapsulation dot1q
Switch(config-if)#switchport mode trunk
#Cteate and Configure Sub-Interfaces
Router#configure terminal
Router(config)#interface fa0/0
Router(config-if)#no shutdown
Router(config)#interface fa0/0.10
Router(config-subif)#encapsulation dot1q 10
Router(config-subif)#ip address 10.1.10.1 255.255.255.0
Router(config-subif)#description VLAN-10
Router(config)#interface fa0/0.20
Router(config-subif)#encapsulation dot1q 20
Router(config-subif)#ip address 10.1.20.1 255.255.255.0
Router(config-subif)#description VLAN-20
#Configure L3 Switch
#Enable IP Routing
Switch(config)#ip routing
#Create SVI
Switch#configure terminal
Switch(config)#interface vlan 10
Switch(config-if)#ip address 10.1.10.1 255.255.255.0
Switch(config-if)#no shutdown
Switch(config)#interface vlan 20
Switch(config-if)#ip address 10.1.20.1 255.255.255.0
Switch(config-if)#no shutdown
