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Lab
6.7.2 EIGRP Interface Summarization
Objectives:
- To reduce the number of routes in
the EIGRP routing table through interface summarization.
Complete the following steps:
- Setup the lab as shown in the diagram.
- Assign IP addresses to each interface. Copy and paste the 14
loopback interfaces on Router C.
- Enable EIGRP as the routing protocol on all routers.
- Advertise network 172.16.0.0 on all routers with AS 100
Verify your configurations are as follows:
Router A's configuration is:
hostname router-a
interface Serial0
ip address 172.16.1.1 255.255.255.0
clockrate 56000
router eigrp 100
network 172.16.0.0
Router B's configuration is:
hostname router-b
interface FastEthernet0/0
ip address 172.16.16.1 255.255.255.0
interface Serial0/0
ip address 172.16.1.2 255.255.255.0
router eigrp 100
network 172.16.0.0
Router C's configuration is:
hostname router-c
interface Loopback0
ip address 172.16.17.1 255.255.255.0
interface Loopback1
ip address 172.16.18.1 255.255.255.0
interface Loopback2
ip address 172.16.19.1 255.255.255.0
interface Loopback3
ip address 172.16.20.1 255.255.255.0
interface Loopback4
ip address 172.16.21.1 255.255.255.0
interface Loopback5
ip address 172.16.22.1 255.255.255.0
interface Loopback6
ip address 172.16.23.1 255.255.255.0
interface Loopback7
ip address 172.16.24.1 255.255.255.0
interface Loopback8
ip address 172.16.25.1 255.255.255.0
interface Loopback9
ip address 172.16.26.1 255.255.255.0
interface Loopback10
ip address 172.16.27.1 255.255.255.0
interface Loopback11
ip address 172.16.28.1 255.255.255.0
interface Loopback12
ip address 172.16.29.1 255.255.255.0
interface Loopback13
ip address 172.16.30.1 255.255.255.0
interface Loopback14
ip address 172.16.31.1 255.255.255.0
interface FastEthernet0/0
ip address 172.16.16.2 255.255.255.0
router eigrp 100
network 172.16.0.0
Issue the command show
ip route from all routers
in the EIGRP network. Record your findings below:

To reduce the number of routes on Router A. Go to Router B and
issue the following command:
Router-b(config)#interface
serial 0/0
Router-b(config-if)# ip summary-address eigrp 100 172.16.16.0
255.255.240.0
Router-b(config-if)#control Z
Issue the command
show ip route
from all routers in the EIGRP network. Record your findings below:

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