Course Outline
- Overview of network troubleshooting
- Defining network troubleshooting
- Essential troubleshooting tools
- Methodologies for troubleshooting
- Introduction to Wireshark
- Understanding how Wireshark operates
- Capturing 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: basics and filter language
- Display filters: basics and filter language
- Commonly used filters
- Lab exercises and case studies
- Working with time values and summaries
- Using default time column settings and precision
- Measuring time between packets
- Setting time references and viewing capture times
- Troubleshooting timing-related issues
- Lab exercises and case studies
- Leveraging 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
- Normal and abnormal network communications
- Causes of performance problems
- Packet losses, excessive ACKs, and retransmissions
- Labs and case studies
- Addressing bandwidth issues
- Measuring bandwidth
- Calculating user/flow throughput
- Calculating application throughput
- Identifying bandwidth and throughput problems
- Lab exercises and case studies
- Addressing latency issues
- Key points in calculating latency
- Plotting high latency periods
- Utilizing free latency calculators
- Using the frame.time_delta filter
- Lab exercises and case studies
- Handling packet loss and retransmissions
- Packet loss and recovery for UDP and TCP
- Events for previous segment loss and out-of-order segments
- Duplicate ACKs and fast retransmissions
- TCP retransmissions
- Zero window, window changes, and other window-related issues
- Lab exercises and case studies
Requirements
Participants should have basic networking knowledge and familiarity with the TCP/IP protocol stack. Attendees must bring laptops with Wireshark software installed (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
The practical examples that complemented the course.
Jesus Cervantes Gutierrez - Grupo Posadas SAB de CV
Course - Basic Network Troubleshooting Using Wireshark
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