Troubleshooting with Wireshark: Locate the Source of Performance Problems

Whether you are a Wireshark newbie or an experienced Wireshark user, this book streamlines troubleshooting techniques used by Laura Chappell in her 20+ years of network analysis experience. Learn insider tips and tricks to quickly detect the cause of poor network performance. This book consists of troubleshooting labs to walk you through the process of measuring client/server/network delays, detecting application error responses, catching delayed responses, locating the point of packet loss, spotting TCP receiver congestion, and more.

Key topics include: path delays, client delays, server delays, connection refusals, service refusals, receive buffer overload, rate throttling, packet loss, redirections, queueing along a path, resolution failures, small MTU sizes, port number reuse, missing support for TCP SACK/Window Scaling, misbehaving infrastructure devices, weak signals (WLAN), and more.

Book supplements: sample trace files, Laura's Wireshark troubleshooting profile, and a troubleshooting checklist.

Laura Chappell has been a protocol analyst for almost 30 years - yes, she has gray hair! Back in the 1990s, Laura became a networking evangelist and member of the IEEE while working at Novell. Laura is the CEO and Founder of Protocol Analysis Institute, Inc., and Chappell University. Laura began using Wireshark as her sole network analysis tool when it was in its infancy (under the Ethereal name) and is the original creator of Wireshark University. Laura Chappell, Protocol Analysis Institute, and Chappell University are not affiliated with the Wireshark Foundation. Laura teaches courses online and onsite and continues to research and write about troubleshooting, optimization, and security techniques for both terrestrial and interplanetary network systems. Laura's customers include many of the Fortune 100, as well as local, national, and international law enforcement agencies. Visit chappell-university.com for more information on Laura Chappell's projects, join her newsletter and read her blog (In Laura's Lab). Laura's courses are available online at chappell.talentlms.com. Ms. Chappell can be reached at laura@chappellu.com.