EIGRP (Enhanced Interior Gateway Routing Protocol), is a Cisco Proprietary Hybrid Routing Protocol. The configuration of EIGRP is similar to other Routing Protocols. In this example, we will configure EIGRP on Packet Tracer with Cisco Routers..
With this EIGRP Config, we will learn important Cisco EIGRP Commands on Cisco Packet Tracer. For our EIGRP Config Example, we will use the below topology consist of four routers and four PCs on Packet Tracer.
EIGRP Configuration Topology
You can DOWNLOAD the Cisco Packet Tracer example with .pkt format at the End of This Lesson.
You can also DOWNLOAD all Packet Tracer examples with .pkt format in Packet Tracer Labs section.
IP Configurations For EIGRP Configuration
For any Packet Tracer Configuration Exmaple, firstly we should configure IP addresses. So, in this EIGRP Configuration, let’s firtly configure IP addresses of the routers and PCs. You can find these ip addresses below:
Router1(config)# interface FastEthernet0/0
Router1(config-if)# ip address 192.168.2.2 255.255.255.0
Router1(config-if)# no shutdown
Router1(config-if)# exit
Router1(config)# interface FastEthernet4/0
Router1(config-if)# ip address 10.0.0.2 255.255.255.0
Router1(config-if)# no shutdown
Router1(config-if)# exit
Router1(config)# interface FastEthernet5/0
Router1(config-if)# ip address 30.0.0.1 255.255.255.0
Router1(config-if)# no shutdown
Router1(config-if)# end
Router1# copy running-config startup-config
Router2(config)# interface FastEthernet0/0
Router2(config-if)# ip address 192.168.3.2 255.255.255.0
Router2(config-if)# no shutdown
Router2(config-if)# exit
Router2(config)# interface FastEthernet4/0
Router2(config-if)# ip address 40.0.0.1 255.255.255.0
Router2(config-if)# no shutdown
Router2(config-if)# exit
Router2(config)# interface FastEthernet5/0
Router2(config-if)# ip address 20.0.0.2 255.255.255.0
Router2(config-if)# no shutdown
Router2(config-if)# end
Router2# copy running-config startup-config
Router3(config)# interface FastEthernet0/0
Router3(config-if)# ip address 192.168.4.2 255.255.255.0
Router3(config-if)# no shutdown
Router3(config-if)# exit
Router3(config)# interface FastEthernet4/0
Router3(config-if)# ip address 40.0.0.2 255.255.255.0
Router3(config-if)# no shutdown
Router3(config-if)# exit
Router3(config)# interface FastEthernet5/0
Router3(config-if)# ip address 30.0.0.2 255.255.255.0
Router3(config-if)# no shutdown
Router3(config-if)# end
Router3# copy running-config startup-config
EIGRP Configuration on Routers
For EIGRP Configuration, we will use Autonomous System Number. We will use this number with “router eigrp” command. After this command, we will be under router configuration mode. We will add networks that run EIGRP one by one. Lastly we will add “no auto-summary” command to avoid automatic summarization on routing table.
Firstly, let’s start our EIGRP Config with Router0 and then configure EIGRP on the other Routers.
Here, our EIGRP Autonomous number will be 100. And for Router0, 192.168.1.0, 10.0.0.0, 20.0.0.0 network will be added under this EIGRP process. These are the directly connected networks to Router0.
The similar configuration will be done on Router1 also. Here, only the networks will be changed. The direclty connected networks to Router1 will be added.
For Router2 and Router3 the similar Cisco EIGRP Configuration will be done. Only ne added networks will be changed. Because each router has different directly connected networks.
After our Packet Tracer Configuartion, now let’s verify our EIGRP Configuration with EIGRP Show Commands. Here, we will check this only on some routers, not on all of them. So what are these verification commands? Some of thes eEIGRP verification commands are given below:
show ip eigrp
show ip eigrp neighbors
show ip eigrp interfaces
show ip eigrp topology
show ip route eigrp
show ip protocols
Now, let’s check each of these commands on Cisco routers.
When we use “show ip eigrp ?” command, we can see our eigrp options that we can use on Packet Tracer.
Router# show ip eigrp ? interfaces IP-EIGRP interfaces neighbors IP-EIGRP neighbors topology IP-EIGRP Topology Table traffic IP-EIGRP Traffic Statistics
Here, firstly we will check EIGRP neighbours of Router0 and Router1. We will see this neighbors with “show ip eigrp neighbors” command.
Router0# show ip eigrp neighbors
IP-EIGRP neighbors for process 100
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
0 10.0.0.2 Fa4/0 14 00:14:53 40 1000 0 12
1 20.0.0.2 Fa5/0 12 00:14:53 40 1000 0 11
Router1# show ip eigrp neighbors
IP-EIGRP neighbors for process 100
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
0 30.0.0.2 Fa5/0 14 00:16:57 40 1000 0 11
1 10.0.0.1 Fa4/0 13 00:16:57 40 1000 0 13
We can verify the EIGRP interfaces with “show ip eigrp interfaces” command.
Router0# show ip eigrp interfaces
IP-EIGRP interfaces for process 100
Xmit Queue Mean Pacing Time Multicast Pending
Interface Peers Un/Reliable SRTT Un/Reliable Flow Timer Routes
Fa4/0 1 0/0 1236 0/10 0 0
Fa5/0 1 0/0 1236 0/10 0 0
Fa0/0 0 0/0 1236 0/10 0 0
Router1# show ip eigrp interfaces
IP-EIGRP interfaces for process 100
Xmit Queue Mean Pacing Time Multicast Pending
Interface Peers Un/Reliable SRTT Un/Reliable Flow Timer Routes
Fa4/0 1 0/0 1236 0/10 0 0
Fa5/0 1 0/0 1236 0/10 0 0
Fa0/0 0 0/0 1236 0/10 0 0
We can see the whole Topology Table of Router0 and Router1 with show ip eigrp topology command.
Router0# show ip eigrp topology
IP-EIGRP Topology Table for AS 100/ID(192.168.1.2)
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - Reply status
P 10.0.0.0/24, 1 successors, FD is 28160
via Connected, FastEthernet4/0
P 20.0.0.0/24, 1 successors, FD is 28160
via Connected, FastEthernet5/0
P 30.0.0.0/24, 1 successors, FD is 30720
via 10.0.0.2 (30720/28160), FastEthernet4/0
P 40.0.0.0/8, 1 successors, FD is 30720
via 20.0.0.2 (30720/28160), FastEthernet5/0
P 192.168.1.0/24, 1 successors, FD is 28160
via Connected, FastEthernet0/0
P 192.168.2.0/24, 1 successors, FD is 30720
via 10.0.0.2 (30720/28160), FastEthernet4/0
P 192.168.3.0/24, 1 successors, FD is 30720
via 20.0.0.2 (30720/28160), FastEthernet5/0
P 192.168.4.0/24, 1 successors, FD is 33280
via 10.0.0.2 (33280/30720), FastEthernet4/0
Router1# show ip eigrp topology
IP-EIGRP Topology Table for AS 100/ID(192.168.2.2)
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - Reply status
P 10.0.0.0/24, 1 successors, FD is 28160
via Connected, FastEthernet4/0
P 20.0.0.0/24, 1 successors, FD is 30720
via 10.0.0.1 (30720/28160), FastEthernet4/0
P 30.0.0.0/24, 1 successors, FD is 28160
via Connected, FastEthernet5/0
P 40.0.0.0/8, 1 successors, FD is 30720
via 30.0.0.2 (30720/28160), FastEthernet5/0
P 192.168.1.0/24, 1 successors, FD is 30720
via 10.0.0.1 (30720/28160), FastEthernet4/0
P 192.168.2.0/24, 1 successors, FD is 28160
via Connected, FastEthernet0/0
P 192.168.3.0/24, 1 successors, FD is 33280
via 10.0.0.1 (33280/30720), FastEthernet4/0
P 192.168.4.0/24, 1 successors, FD is 30720
via 30.0.0.2 (30720/28160), FastEthernet5/0
We can also see the EIGRP traffic statistics with “show ip eigrp traffic” command.
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