EIGRP GNS3 Lab

Hi ! everyone on today we are going to learn eigrp GNS3 lab which is done in packet tracer v 7.1 given below screenshot is the topology.

Step 1 – Configuring IP addresses on the routers

On R1:
R1#config t
R1(config)#int s0/0
R1(config-if)#ip address 192.168.30.12 255.255.255.240
R1(config-if)#no shut
R1(config-if)#int s0/1
R1(config-if)#ip address 192.168.30.18 255.255.255.240
R1(config-if)#no shut
R1(config-if)#int s0/2
R1(config-if)#ip address 192.168.30.35 255.255.255.240
R1(config-if)#no shut
R1(config-if)#int f0/0
R1(config-if)#ip address 192.168.60.10 255.255.255.240
R1(config-if)#no shut

On R2:
R2#config t
R2(config)#int s0/0
R2(config-if)#ip address 192.168.30.13 255.255.255.240
R2(config-if)#no shut

On R3:
R3#config t
R3(config)#int f0/0
R3(config-if)#ip address 192.168.60.13 255.255.255.240
R3(config-if)#no shut

On R4:
R4#config t
R4(config)#int s0/0
R4(config-if)#ip address 192.168.30.20 255.255.255.240
R4(config-if)#no shut

On R5:
R5#config t
R5(config)#int s0/0
R5(config-if)#ip address 192.168.30.40 255.255.255.240
R5(config-if)#no shut

Now all the interfaces are up. We should check the interfaces on R1 to confirm this with the “show ip int brief” command

Notice that all both the “Status” and “Protocol” of the connected interfaces were up.

Also, We can see all the neighbors of R1 with the “show cdp neighbors” command on R1 given below.

At this time we can ping between two directly connected interfaces. For example a ping from s0/0 of R1 to s0/0 of R2 (192.168.30.13) will be successful.

But a ping between two far-away interfaces is not successful. For example a ping from R2 to s0/0 of R4 (192.168.30.20) will be unsuccessful.

Step 2 – Enable EIGRP on all the routers

On R1
R1(config)#router eigrp 100
R1(config-router)#network 192.168.30.0
R1(config-router)#network 192.168.60.0
R1(config-router)#no auto-summary

On R2
R2(config)#router eigrp 100
R2(config-router)#network 192.168.30.0
R2(config-router)#no auto-summary

On R3
R3(config)#router eigrp 100
R3(config-router)#network 192.168.60.0
R3(config-router)#no auto-summary

On R4
R4(config)#router eigrp 100
R4(config-router)#network 192.168.30.0
R4(config-router)#no auto-summary

On R5
R5(config)#router eigrp 100
R5(config-router)#network 192.168.30.0
R5(config-router)#no auto-summary

After typing above commands we will see the neighbors adjacency on these routers are up. 

Now the EIGRP process is up and we can ping from anywhere. For example a ping from R2 to s0/0 of R4 (192.168.30.20) will be successful now.

By checking the routing table of R2, R3, R4 & R5 we can confirm EIGRP has been implemented successfully. For example, using the “show ip route” command on R5 we see below screenshot.

We can check the neighbor relationships on these routers with the “show ip eigrp neighbors” command. Below is an example of R1:

To see the topologies of these routers, use the “show ip eigrp topology” command. Below is the output of R4.

Therefore, we have successfully completed our lab session on eigrp lab on packet tracer version 7.1. For more detailed information for simulation you can have our file from download button the given below.