6.2.2.4 Packet Tracer – Configuring Basic EIGRP with IPv4
Packet Tracer – Configuring Basic EIGRP with IPv4 (Answer Version)
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Topology
6.2.2.4 Packet Tracer – Configuring Basic EIGRP with IPv4
Addressing Table
| Device | Interface | IP Address | Subnet Mask | Default Gateway |
| R1 | G0/0 | 172.16.1.1 | 255.255.255.0 | N/A |
| S0/0/0 | 172.16.3.1 | 255.255.255.252 | N/A | |
| S0/0/1 | 192.168.10.5 | 255.255.255.252 | N/A | |
| R2 | G0/0 | 172.16.2.1 | 255.255.255.0 | N/A |
| S0/0/0 | 172.16.3.2 | 255.255.255.252 | N/A | |
| S0/0/1 | 192.168.10.9 | 255.255.255.252 | N/A | |
| R3 | G0/0 | 192.168.1.1 | 255.255.255.0 | N/A |
| S0/0/0 | 192.168.10.6 | 255.255.255.252 | N/A | |
| S0/0/1 | 192.168.10.10 | 255.255.255.252 | N/A | |
| PC1 | NIC | 172.16.1.10 | 255.255.255.0 | 172.16.1.1 |
| PC2 | NIC | 172.16.2.10 | 255.255.255.0 | 172.16.2.1 |
| PC3 | NIC | 192.168.1.10 | 255.255.255.0 | 192.168.1.1 |
Objectives
Part 1: Configure EIGRP
Part 2: Verify EIGRP Routing
Background
In this activity, you will implement basic EIGRP configurations including network commands, passive interfaces and disabling automatic summarization. You will then verify your EIGRP configuration using a variety of show commands and testing end-to-end connectivity.
Part 1: Configure EIGRP
Step 1: Enable the EIGRP routing process.
Enable the EIGRP routing process on each router using AS number 1. The configuration for R1 is shown.
R1(config)# router eigrp 1
R2(config)# router eigrp 1
R3(config)# router eigrp 1
What is the range of numbers that can be used for AS numbers? 1 – 65,535
Step 2: Advertise directly connected networks.
- Use the show ip route command to display the directly connected networks on each router.
- How can you tell the difference between subnet addresses and interface addresses? Subnets are identified with a “C” and link addresses are identified with an “L”.
- On each router, configure EIGRP to advertise the specific directly connected subnets. The configuration for R1 is shown.
R1(config-router)# network 172.16.1.0 0.0.0.255 R1(config-router)# network 172.16.3.0 0.0.0.3 R1(config-router)# network 192.168.10.4 0.0.0.3
R2(config-router)# network 172.16.2.0 0.0.0.255 R2(config-router)# network 172.16.3.0 0.0.0.3 R2(config-router)# network 192.168.10.8 0.0.0.3
R3(config-router)# network 192.168.1.0 0.0.0.255 R3(config-router)# network 192.168.10.4 0.0.0.3 R3(config-router)# network 192.168.10.8 0.0.0.3
Step 3: Configure passive interfaces.
Configure the LAN interfaces to not advertise EIGRP updates. The configuration for R1 is shown.
R1(config-router)# passive-interface g0/0
R2(config-router)# passive-interface g0/0
R3(config-router)# passive-interface g0/0
Step 4: Disable automatic summarization.
The topology contains discontiguous networks. Therefore, disable automatic summarization on each router. The configuration for R1 is shown.
R1(config-router)# no auto-summary
R2(config-router)# no auto-summary
R3(config-router)# no auto-summary
Note: Prior to IOS 15 auto-summary had to be manually disabled.
Step 5: Save the configurations.
Part 2: Verify EIGRP Routing
Step 1: Examine neighbor adjacencies.
- Which command displays the neighbors discovered by EIGRP? show ip eigrp neighbors
- All three routers should have two neighbors listed. The output for R1 should look similar to the following:
IP-EIGRP neighbors for process 1
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
0 172.16.3.2 Se0/0/0 14 00:25:05 40 1000 0 28
1 192.168.10.6 Se0/0/1 12 00:13:29 40 1000 0 31
Step 2: Display the EIGRP routing protocol parameters.
- What command displays the parameters and other information about the current state of any active IPv4 routing protocol processes configured on the router? show ip protocols
- On R2, enter the command you listed for 2a and answer the following questions:
How many routers are sharing routing information with R2? 2
Where is this information located under? Routing Information Sources
What is the maximum hop count? 100
Step 3: Verify end-to-end connectivity
PC1, PC2 and PC3 should now be able to ping each other. If not, troubleshoot your EIGRP configurations.
Suggested Scoring Rubric
| Activity Section | Question Location | Possible Points | Earned Points |
| Part 1: Configure EIGRP | Step 1 | 2 | |
| Step 2a | 2 | ||
| Part 1 Total | 4 | ||
| Part 2: Verify EIGRP Routing | Step 1a | 5 | |
| Step 2a | 5 | ||
| Step 2b | 6 | ||
| Part 2 Total | 16 | ||
| Packet Tracer Score | 80 | ||
| Total Score | 100 | ||