4.2.1 Packet Tracer – Troubleshoot EIGRP for IPv4 (Answers)

4.2.1 Packet Tracer – Troubleshoot EIGRP for IPv4 (Answers)

Addressing Table

Device Interface IP Address Subnet Mask Default Gateway
R1 G0/0 172.31.10.1 255.255.255.0 N/A
S0/0/0 172.31.40.225 255.255.255.252
S0/0/1 172.31.40.233 255.255.255.252
R2 G0/0 172.31.20.1 255.255.255.0 N/A
S0/0/0 172.31.40.226 255.255.255.252
S0/0/1 172.31.40.229 255.255.255.252
S0/1/0 209.165.201.1 255.255.255.224
R3 G0/0 172.31.30.1 255.255.255.0 N/A
S0/0/0 172.31.40.234 255.255.255.252
S0/0/1 172.31.40.230 255.255.255.252
PC1 NIC 172.31.10.10 255.255.255.0 172.31.10.1
PC2 NIC 172.31.20.10 255.255.255.0 172.31.20.1
PC3 NIC 172.31.30.10 255.255.255.0 172.31.30.1

Scenario

In this activity, you will troubleshoot EIGRP neighbor issues. Use show commands to identify errors in the network configuration. Then, you will document the errors you discover and implement an appropriate solution. Finally, you will verify that full end-to-end connectivity is established.

Troubleshooting Process

1. Use testing commands to discover connectivity problems in the network and document the problem in the Documentation Table.

2. Use verification commands to discover the source of the problem and devise an appropriate solution to implement. Document the proposed solution in the Documentation Table.

3. Implement each solution one at a time and verify if the problem is resolved. Indicate the resolution status in the Documentation Table.

4. If the problem is not resolved, it may be necessary to first remove the implemented solution before returning to Step 2.

5. After all identified problems are resolved, test for full end-to-end connectivity.

Documentation Table

Device Identified Problem Proposed Solution Resolved?
R1 Has not established any adjacencies Remove EIGRP 11 and configure EIGRP 1, advertise the directly connected networks and passive-interface g0/0 and disable automatic summarization.
R2 Is not forming an adjacency with R3. Advertise the 172.31.40.228/30 network
R3 Is performing automatic summarization Disable automatic summarization using the no auto-summary EIGRP subcommand

Download 4.2.1 Packet Tracer – Troubleshoot EIGRP for IPv4 PDF & PKA files:


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