Course Outline
- Introduction to network troubleshooting
- Understanding network troubleshooting
- Essential troubleshooting tools
- Troubleshooting methodologies
- Introduction to Wireshark
- How Wireshark works
- Packet capture techniques
- Understanding capture and display filters
- Configuring Global Preferences
- Navigation and colorization strategies
- Utilizing time values and summaries
- Examining basic trace file statistics
- Saving, exporting, and printing data
- Capture and display filters
- Capture filters – fundamentals and filter language
- Display filters – fundamentals and filter language
- Essential filters for daily use
- Lab exercises and case studies
- Leveraging time values and summaries
- Adjusting default time column settings and precision
- Analyzing time between packets
- Setting time references and viewing capture times
- Troubleshooting timing-related issues
- Lab exercises and case studies
- Utilizing Statistics Tools
- Creating I/O graphs
- Creating TCP Time-Sequence graphs
- Analyzing flow graphs
- Evaluating service response times
- Creating Round-Trip-Time graphs
- Analyzing TCP/IP flows
- Analyzing application flows
- Lab exercises and case studies
- Fundamentals of the Expert System
- Distinguishing normal from abnormal network communications
- Identifying causes of performance problems
- Understanding packet loss, excessive ACKs, and retransmissions
- Lab and case studies
- Addressing bandwidth issues
- Measuring bandwidth
- Calculating user/flow throughput
- Calculating application throughput
- Resolving bandwidth and throughput problems
- Lab exercises and case studies
- Addressing latency issues
- Key steps in calculating latency
- Plotting high latency periods
- Utilizing free latency calculators
- Applying the frame.time_delta filter
- Lab exercises and case studies
- Managing packet loss and retransmissions
- Packet loss and recovery mechanisms for UDP and TCP
- Handling previous segment loss and out-of-order segments
- Identifying duplicate ACKs and fast retransmissions
- Investigating TCP retransmissions
- Addressing zero window, window changes, and other window-related issues
- Lab exercises and case studies
Requirements
Participants should possess basic networking knowledge and familiarity with the TCP/IP protocol stack. Attendees must bring laptops pre-installed with Wireshark software (available for free download at www.wireshark.org).
Testimonials (7)
practical case studies
Kamil - P4 Sp. z o.o.
Course - Basic Network Troubleshooting Using Wireshark
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.
