Summary

Networks need to be available nearly 100 percent of the time. A single device failure, malware, or misconfiguration can significantly impact network performance. In this chapter, we reviewed how we measure performance using three main metrics: latency, throughput, and packet loss. We then looked at a few of the many tools available in Wireshark to identify trouble on the network. We discovered the importance of time values and how they factor in discovering latency issues. In addition, we learned how coloring rules can highlight specific types of traffic. We also discovered how any of the rules can be edited, deleted, or moved up or down in priority.

We then looked at the Intelligent Scrollbar, which provides a visual so that we can easily spot and further investigate trouble in a capture. We covered the ways Expert Information helps to alert the network administrator on possible issues once a capture has been made. We summarized by reviewing the Expert Information console...