CCNP - EIGRP Lab - Route Summarization

Interface IP Address Configuration

R1
Interface IP Address Subnet Mask
S 0/2/0 1.1.1.1 255.0.0.0
E 0 10.1.1.1 255.0.0.0

R2
Interface IP Address Subnet Mas
S 1 1.1.1.2 255.0.0.0
S0 2.2.2.1 255.0.0.0
E 0 20.1.1.1 255.0.0.0

R3

Interface IP Address Subnet Mask
S 0/2 2.2.2.2 255.0.0.0
E 0 30.1.1.1 255.0.0.0
Loopback 1 172.168.0.1 255.255.255.0
Loopback 2 172.168.1.1 255.255.255.0
Loopback 3 172.168.2.1 255.255.255.0
Loopback 4 172.168.3.1 255.255.255.0
Loopback 5 172.168.4.1 255.255.255.0
Loopback 6 172.168.5.1 255.255.255.0
Loopback 7 172.168.6.1 255.255.255.0
Loopback 8 172.168.7.1 255.255.255.0

Lab Objective:
Task 1
Configure the following Loopback Interfaces on R3 and advertise them under EIGRP:

Loopback 1: 172.168.0.1/24
Loopback 2: 172.168.1.1/24
Loopback 3: 172.168.2.1/24
Loopback 4: 172.168.3.1/24
Loopback 5: 172.168.4.1/24
Loopback 6: 172.168.5.1/24
Loopback 7: 172.168.6.1/24
Loopback 8: 172.168.7.1/24


R3
---------------------------------------------
Interface loopback 1
Ip address 172.168.0.1 255.255.255.0
Interface loopback 2
Ip address 172.168.1.1 255.255.255.0
Interface loopback 3
Ip address 172.168.2.1 255.255.255.0
Interface loopback 4
Ip address 172.168.3.1 255.255.255.0
Interface loopback 5
Ip address 172.168.4.1 255.255.255.0
Interface loopback 6
Ip address 172.168.5.1 255.255.255.0
Interface loopback 7
Ip address 172.168.6.1 255.255.255.0
Interface loopback 8
Ip address 172.168.7.1 255.255.255.0

Router eigrp 100
Network 2.0.0.0
Network30.0.0.0
Network 172.168.1.0 0.0.0.255
Network 172.168.2.0 0.0.0.255
Network 172.168.3.0 0.0.0.255
Network 172.168.4.0 0.0.0.255
Network 172.168.5.0 0.0.0.255
Network 172.168.6.0 0.0.0.255
Network 172.168.7.0 0.0.0.255
Network 172.168.0.0 0.0.0.255
No auto-summary
---------------------------------------------

Task 2

Configure EIGRP on R1 and R2. Advertise the directly connected networks in EIGRP in
AS 100. Disable auto-summary. Also configure route summarization so that only one
summary route is advertised to R1.


R1

Router eigrp 100
Network 10.0.0.0
Network 1.0.0.0
No auto-summary

R2

Router eigrp 100
Network 1.0.0.0
Network 20.0.0.0
Network 2.0.0.0
No auto-summary

Int s0
Ip summary-address eigrp 100 172.168.0.0
255.255.248.0


Verification
R1#show ip route
C 1.0.0.0/8 is directly connected, Serial0/2/0
D 2.0.0.0/8 [90/2681856] via 1.1.1.2, 00:00:02, Serial0/2/0
D 20.0.0.0/8 [90/2195456] via 1.1.1.2, 00:00:02, Serial0/2/0
172.168.0.0/21 is subnetted, 1 subnets
D 172.168.0.0 [90/2809856] via 1.1.1.2, 00:00:02, Serial0/2/0
C 10.0.0.0/8 is directly connected, FastEthernet0/0
D 30.0.0.0/8 [90/2707456] via 1.1.1.2, 00:00:02, Serial0/2/0


With route summarization on R2 a summary route is created pointing to null 0
R2#show ip route
C 1.0.0.0/8 is directly connected, Serial0
C 2.0.0.0/8 is directly connected, Serial1
C 20.0.0.0/8 is directly connected, Ethernet0
172.168.0.0/16 is variably subnetted, 9 subnets, 2 masks
D 172.168.4.0/24 [90/2297856] via 2.2.2.2, 00:07:13, Serial1
D 172.168.5.0/24 [90/2297856] via 2.2.2.2, 00:07:08, Serial1
D 172.168.6.0/24 [90/2297856] via 2.2.2.2, 00:07:04, Serial1
D 172.168.7.0/24 [90/2297856] via 2.2.2.2, 00:06:56, Serial1
D 172.168.0.0/24 [90/2297856] via 2.2.2.2, 00:06:49, Serial1
D 172.168.0.0/21 is a summary, 00:01:24, Null0
D 172.168.1.0/24 [90/2297856] via 2.2.2.2, 00:07:33, Serial1
D 172.168.2.0/24 [90/2297856] via 2.2.2.2, 00:07:25, Serial1
D 172.168.3.0/24 [90/2297856] via 2.2.2.2, 00:07:18, Serial1
D 10.0.0.0/8 [90/2172416] via 1.1.1.1, 00:01:30, Serial0
D 30.0.0.0/8 [90/2195456] via 2.2.2.2, 00:08:03, Serial1