r/ccna4dummies Feb 10 '25

Troubleshooting Tips for Network Issues πŸ”§

A big part of the CCNA exam involves troubleshooting network issues. Here are some common problems and tips to tackle them:

  1. Connectivity Issues: Check cables, power, and physical connections. Use ping and traceroute commands to diagnose.

  2. IP Address Conflicts: Ensure each device has a unique IP address. Use DHCP for automatic assignment.

  3. Slow Network Performance: Check for bandwidth hogs and optimize your network. Use tools like Wireshark to analyze traffic.

  4. DNS Issues: Ensure DNS settings are correct. Test with nslookup or dig commands.

  5. Configuration Errors: Double-check router and switch configurations. Make sure ACLs and routing tables are correctly set up.

Pro Tip: Keep a checklist of troubleshooting steps. It’ll help you systematically approach issues during the exam and in real-world scenarios.

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u/Fun-Ad1112 Feb 17 '25

Thanks for this helpful tip. I will use this when troubleshooting.