Lecture Notes on Networks

Troubleshooting Networks

Repairing the Network When It Breaks

Approach to Troubleshooting

Troubleshooting Methodology

Examining the Hardware Layers for Problems

Checking the Media

Wired Media

Visually Examining the Cabling

Testing the Cabling with a Cable Tester

Wireless Media

Determining What Parts of a Radio Frequency Spectrum Are Available

Determining What Radio Frequency Channels Are Available

Devices on the Network

Methods to Check Devices for Problems

Examining the Software Layers for Problems

Examining the Operation of the Protocols Being Used on the Network

How to Use a Protocol Analyzer

Using a Protocol Analyzer to Examine a Network for Problems

Examining Specific Types of Networks

Troubleshooting a Wireless Network

Troubleshooting Real Time Traffic

Collecting Information on the Network's Operation

Testing Connectivity

Collecting Network Data