Cisco single-arm routing experiment

Cisco single-arm routing experimental Topology diagram:

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The configuration of the IOU1 is as follows:

Interface ethernet0/0
No IP address
!
Interface ethernet0/0.1
Encapsulation dot1q 10
IP address 192.168.10.254 255.255.255.0
!
Interface ethernet0/0.2
Encapsulation dot1q 20
IP address 192.168.20.254 255.255.255.0

The configuration information for the IOU2 is as follows:

Interface ethernet0/0
Switchport trunk allowed VLAN 10,20
Switchport Trunk Encapsulation dot1q
Switchport mode Trunk
!
Interface ETHERNET0/1
Switchport Access VLAN 10
Switchport mode access
!
Interface ETHERNET0/2
Switchport Access VLAN 20
Switchport mode access

The configuration information for the IOU3 is as follows:

Interface Vlan1
IP address 192.168.10.10 255.255.255.0
!
IP Route 0.0.0.0 0.0.0.0 192.168.10.254

The configuration information for the IOU4 is as follows:

!
Interface Vlan1
IP address 192.168.20.10 255.255.255.0
!
IP Route 0.0.0.0 0.0.0.0 192.168.20.254

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Cisco single-arm routing experiment