Hello All,
I've complete the networking topology based on "INE RSv5 Virtual Routers & Physical switchs topology"
TOPO1:R1---SW1---R2, it's all be okay !!!
R1 configuration
interface GigabitEthernet1.12
encapsulation dot1Q 12
ip address 12.1.1.1 255.255.255.0
R2 configuration
interface GigabitEthernet1.12
encapsulation dot1Q 12
ip address 12.1.1.2 255.255.255.0
The question is how to configure a basic topo:R1---SW1---SW2---R2
Appreciate for your kindly response and answers.