Troubleshooting Network Connectivity

Offered By: LinkedIn Learning

Course Description

Overview

Learn how to diagnose the source of network connectivity problems by troubleshooting each layer of a network, including physical media, DNS issues, Wi-Fi interference, and more.

Syllabus

Introduction

Introduction
What you should know
Tools and software

1. Physical Layer Troubleshooting

POTS failure
Copper Ethernet failure
Fiber interface failure

2. Data Link and Network Layer Troubleshooting

Switching loop
Duplicate addressing
DNS/IP addressing issues
Rogue DHCP
Failed routes/routing loop

3. Transport Layer Troubleshooting

Port already in use, netstat
Test service connectivity, telnet/wireshark

4. Wi-Fi Troubleshooting

Intermittent service

5. Proactive Troubleshooting

NMS
Probes

Conclusion

Next steps

Taught by

Greg Sowell

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