Course Outline
- Introduction to network troubleshooting
- Defining network troubleshooting
- Essential troubleshooting tools
- Established troubleshooting methodologies
- Overview of Wireshark
- Understanding Wireshark's mechanics
- Capturing network packets
- Understanding capture and display filters
- Configuring global preferences
- Navigation and colorization techniques
- Utilizing time values and summaries
- Examining basic trace file statistics
- Saving, exporting, and printing data
- Capture and display filters
- Capture filters: fundamentals and syntax
- Display filters: fundamentals and syntax
- Essential filter examples
- Lab exercises and case studies
- Utilizing time values and summaries
- Configuring default time column settings and precision
- Analyzing time intervals between packets
- Establishing time references and viewing capture times
- Troubleshooting timing-related issues
- Lab exercises and case studies
- Leveraging statistics tools
- Creating I/O graphs
- Generating TCP Time-Sequence graphs
- Analyzing flow graphs
- Evaluating service response times
- Creating Round-Trip-Time (RTT) graphs
- Analyzing TCP/IP flows
- Analyzing application flows
- Lab exercises and case studies
- Fundamentals of the Expert System
- Identifying normal versus abnormal network communications
- Root causes of performance issues
- Addressing packet loss, excessive ACKs, and retransmissions
- Lab exercises and case studies
- Addressing bandwidth issues
- Measuring bandwidth
- Calculating user/flow throughput
- Calculating application throughput
- Diagnosing bandwidth and throughput problems
- Lab exercises and case studies
- Addressing latency issues
- Key considerations in calculating latency
- Visualizing high-latency periods
- Utilizing free latency calculators
- Using the frame.time_delta filter
- Lab exercises and case studies
- Investigating packet loss and retransmissions
- Packet loss and recovery mechanisms in UDP and TCP
- Handling lost previous segments and out-of-order segments
- Analyzing duplicate ACKs and fast retransmissions
- TCP retransmission analysis
- Addressing zero window conditions, window changes, and related issues
- Lab exercises and case studies
Requirements
Participants should possess foundational knowledge of networking concepts and the TCP/IP protocol stack. Attendees are required to bring laptops with Wireshark software installed, which can be downloaded free of charge from 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.
