From the "Router A" console
- Cable the lab as shown above and erase all routers.
- To configure the interfaces and turn on the EIGRP routing
protocol issue the following commands:
- router-a(config)#interface serial 0/0
- router-a(config-if)#ip
address 172.16.1.1 255.255.255.0
- router-a(config-if)#no shutdown
- router-a(config-if)#router eigrp 44
- router-a(config-router)#network
172.16.1.0
- router-a(config-router)#^Z
From the "Router B" console
- Issue the following commands:
- router-b(config)#interface fastethernet 0/0
- router-b(config-if)#ip
address 10.1.2.1 255.255.255.0
- router-b(config-if)#no shutdown
- router-b(config-if)#interface
serial 0/0
- router-b(config-if)#ip address 172.16.1.2 255.255.255.0
- router-b(config-if)#clockrate 56000
- router-b(config-if)#no shutdown
- router-b(config-if)#interface serial 0/1
- router-b(config-if)#ip
address 10.1.1.1 255.255.255.0
- router-b(config-if)#bandwidth 256
- router-b(config-if)#router eigrp 44
- router-b(config-router)#network
10.1.2.0
- router-b(config-router)#network 172.16.1.0
- router-b(config-router)#network
10.1.1.0
- router-b(config-router)#^Z
- Follow the same procedure with different addresses on the other
two routers
From the "Router A" console
- Enter show ip eigrp topology 10.0.0.0 and report your findings
below:

From the "Router B" console
- Enter show ip route 10.0.0.0 and report your findings below:

- Enter show ip eigrp topology 10.0.0.0
What is null0 ?

- Turn off the auto-summary feature of EIGRP by issuing the
following commands:
- router-b(config)#router eigrp 44
- router-b(config-router)#no
auto-summary
- router-b(config-router)#^Z
- Enter show ip eigrp topology and report your findings below:

From the "Router A" console
- Enter the commands show ip eigrp topology 10.0.0.0 and
show ip route. Report your findings below: