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Course Outline
- Introduction to network troubleshooting
- What is network troubleshooting
- Troubleshooting tools
- Troubleshooting methodologies
- Introduction to Wireshark
- How Wireshark Works
- Capturing Packets,
- What are capture and display filters
- Configuring Global Preferences
- Navigation and Colorization Techniques
- Using Time Values and Summaries
- Examining Basic Trace File Statistics
- Save, Export and Print
- Capture and Display Filters
- Capture filters – basics and filter language
- Display filters – basics and filter language
- Useful filters
- Lab exercises and case studies
- Using Time Values and Summaries
- Use the default time column setting and precision
- Use time between packets
- Set a time reference and view capture times
- Troubleshooting timing problems
- Lab exercises and case studies
- Using Statistics Tools
- Create I/O graphs
- Create TCP Time-Sequence graphs
- Analyze flow graphs
- Evaluate service response times
- Create Round-Trip-Time graphs
- Analyze TCP/IP flows
- Analyse applications flows
- Lab exercises and case studies
- The Expert System Basics
- Normal and un-normal Network Communications
- Causes of Performance Problems
- Packet Losses, Ack to longs and Retransmissions
- Lab and case studies
- Bandwidth Issues
- Bandwidth measurement
- User/flow throughput calculations
- Applications throughput calculations
- Bandwidth and throughput problems
- Lab exercises and case studies
- Latency Issues
- The primary points in calculating latency
- Plotting high latency times
- Free latency calculators
- Using the frame.time_delta filter
- Lab exercises and case studies
- Packet Loss and Retransmissions
- Packet loss and recovery - UDP and TCP
- Previous segment lost and Out-of-Order Segments events
- Duplicate ACKs and Fast Retransmissions
- TCP Retransmissions
- Zero window, Window changes and other window problems
- Lab exercises and case studies
Requirements
Basic knowledge in networking and the TCP/IP protocol stack. The participants should come with Laptops with Wireshark software (free download from the site - Www.wireshark.org)
21 Hours
Testimonials (6)
Knowlage and patience
Mariusz
Course - Basic Network Troubleshooting Using Wireshark
...and everything :) This was probably the best training I was a part of.
Maciej
Course - Basic Network Troubleshooting Using Wireshark
It is clear Nima is comfortable using Wireshark. He showed us the basic features and tools available to use.
Jonathan - Utility
Course - Basic Network Troubleshooting Using Wireshark
Trainer very engaging and knowledgeable
Effendy Bin Ahmad sata - SBS transit
Course - Basic Network Troubleshooting Using Wireshark
The case studies are really helpful in refreshing my knowledge of wireshark as well as lots of good tips from the trainer based on his experience.
Kai Xiang - SBS transit
Course - Basic Network Troubleshooting Using Wireshark
Trainer is well prepared and dedicated in making us understand. Well done.
