Configure an instance for a single-arm Router

Configure SW1:

Switch (config) # hos SW1

SW1 (config) # VTP domain Cisco

SW1 (config) # VTP Mode Server

SW1 (config) # int F0/1

SW1 (config-If) # switchport mode trunk

SW1 (config) # int F0/13

SW1 (config-If) # switchport access VLAN 2

SW1 (config-If) # switchport Mode Access

SW1 (config-If) # int F0/24

SW1 (config-If) # switchport mode trunk

Configure sw2:

Switch (config) # hos sw2

Sw2 (config) # VTP domain Cisco

Sw2 (config) # VTP mode Client

Sw2 (config) # int F0/1

Sw2 (config-If) # switchport mode trunk

Sw2 (config) # int F0/14

Sw2 (config-If) # switchport access VLAN 3

Sw2 (config-If) # switchport Mode Access

Name the VLAN in SW1:

SW1 (config) # VLAN 2

SW1 (config-VLAN) # name vlan1x

SW1 (config-VLAN) # VLAN 3

SW1 (config-VLAN) # name vlan2x

In this case, SW1 and sw2 are synchronized.

Configure the route:

Router (config) # int F0/0

Router (config-If) # No IP add

Router (config-If) # int F0/0.1

Router (config-subif) # encapsulation dot1q 2

Router (config-subif) # IP add 172.26.10.1 255.255.255.0

Router (config-subif) # int F0/0.2

Router (config-subif) # encapsulation dot1q 3

Router (config-subif) # IP add 172.26.20.1 255.255.255.0

Router (config) # int F0/0

Router (config-If) # No Shu

Vlan1x PC: 172.26.10.2 255.255.0 172.26.10.1

Vlan2x PC: 172.26.20.2 255.255.0 172.26.20.1

In this case, pC1 and PC2 can communicate.

Step 5:

Disable the F0/0 interface of the router.

Router (config) # int F0/0

Router (config-If) # Shu

In this case, pC1 and PC2 cannot communicate.

Configure SW1:

SW1 (config) # int VLAN 2

SW1 (config-If) # IP add 172.26.10.1 255.255.255.0
SW1 (config-If) # No Shu
SW1 (config-If) # int VLAN 3

SW1 (config-If) # IP add 172.26.20.1 255.255.255.0
SW1 (config-If) # No Shu

SW1 (config-If) # exit

SW1 (config) # IP routing

In this case, pC1 and PC2 can communicate.

Sixth, next decomposition...

Sixth:

Configure SW1:

Switch (config) # int F0/24

Switch (config-If) # No switchport
Switch (config-If) # IP add 172.26.100.1 255.255.255.0
Switch (config-If) # No Shu
Switch (config-If) # ex
Switch (config) # router OSPF 1

Switch (config-router) # net 172.26.100.0 0.0.255 A 1
Switch (config-router) # net 172.26.10.0 0.0.255 A 1
Switch (config-router) # net 172.26.20.0 0.0.255 A 1

Configure the route:

Router (config) # int F0/0
Router (config-If) # IP add 172.26.100.2 255.255.255.0
Router (config-If) # No Shu

Router (config) # router OSPF 1
Router (config-router) # net 192.168.0.0 0.0.255.255 a 0
Router (config-router) # net 172.26.100.0 0.0.255 A 1

Router (config) # router rip
Router (config-router) # V 2
Router (config-router) # net 192.168.2.0
Router (config-router) # ex

Router (config) # router OSPF 1

Router (config-router) # default-Information originate

In this case, the VLAN client can access the backbone network.