Network engineers can quickly become frustrated with unusual network performance issues. While most engineers are familiar with ARP and know how to clear a cache on a device, and they use ping regularly to troubleshoot networks, understanding both ARP and ICMP operation at the packet level will bring a new way to quickly solve network issues. In this course, Wireshark Traffic Analysis: Customizing the Interface, ARP, ICMP, and DNS, you will gain the ability to use Wireshark captures to detect and understand network issues causing performance problems. First, you will see how to customize the Wireshark interface, creating profiles for unique troubleshooting situations. Next, you will discover ARP operation, what it means, and how to use it to identify specific behaviors of network traffic. Finally, you will explore how to analyze ICMP types and codes in Wireshark, so you can use it to troubleshoot networks in a new way. When you are finished with this course, you will have the skills and knowledge of Wireshark protocol analysis needed to analyze and troubleshoot ARP, ICMP, and DNS traffic on your network.
Author Name: Ross Bagurdes
Author Description:
Ross has had a diverse career. He has a Structural Engineering degree from Milwaukee School of Engineering, but gave up the career shortly after graduating from college. Beginning in 1997, Ross began officially working in IT, implementing and supporting a paperless work order system for a Natural Gas Utility in Illinois. Since then, Ross has spent his years teaching and managing data networks. Ross spent 7 years at University of Wisconsin Hospitals and Clinics, supporting and managing the large … more

Table of Contents

• Course Overview
  1min
• Customizing the Wireshark Interface
  54mins
• Troubleshooting Layer 2 Issues with ARP
  40mins
• Introducing ICMP to Troubleshoot Networks
  48mins
• Troubleshooting Using ICMP Error Messages
  35mins
• Examining and Troubleshooting DNS
  16mins