EIGRP Route Summarization Configuration on GNS3
This is an example of EIGRP summarization lab on GNS3. You can do the EIGRP summarization on any router in network, but in our topology R1 and R6 are best router to perform route summarization. For IP and EIGRP configuration of below topology you can visit EIGRP configuration on GNS3
Before the summarization you can view the output of R2's routing table showing all subnets of 192.168.0.0 and 200.1.0.0 networks, making our routing table a bit complex. so lets summarize these routes.
R1 EIGRP Summarization Commands:
R1(config)#interface s1/0
R1(config-if)#ip address eigrp 100 summary-address 192.168.0.0 255.255.248.0
R6 EIGRP Summarization Commands:
R6(config)#interface s1/0
R6(config-if)#ip address eigrp 100 summary-address 200.1.0.0 255.255.252.0
R1(config)#interface g2/0
R1(config-if)#ip address eigrp 100 summary-address 200.1.0.0 255.255.252.0
Verification:
R2#show ip route
Now you can see only one summarize route for 200.1.0.0 and 192.168.0.0 networks.
