Troubleshooting Network Issues on a Raspberry Pi: A Step-by-Step Guide

Resolving ARP Table Conflicts and LAN Connectivity Problems on Your Raspberry Pi

Troubleshooting Raspberry Pi network issues

Network issues can be frustrating, especially when they involve multiple IP addresses in the ARP table and a non-functional LAN. This guide will walk you through the steps to diagnose and fix these issues, using a Raspberry Pi as an example.

Step 1: Check Physical Connections

Before diving into software solutions, ensure that all physical connections are secure:

• Verify that the Ethernet cable is properly connected to the Raspberry Pi and the router/switch.
• Check for any visible damage to the cable or connectors.

Step 2: Verify IP Configuration

Ensure that your Raspberry Pi has the correct IP configuration:

1. Check the IP Address:

ip addr show

Make sure the Raspberry Pi has a valid IP address in the correct subnet.

2. Check the Default Gateway:

ip route show

Verify that the default gateway is correctly set.

Step 3: Inspect the ARP Table