Jeff Carrell is Network Consultant at Network Conversions. He is a frequent industry speaker, freelance writer, IPv6 Forum Certified Trainer, network instructor, and course developer to major networking manufacturers. He is also the technical lead and co-author for the book, Guide to TCP/IP 4th Edition, and co-author and lead technical editor on Fundamentals of Communications and Networking, Second Edition.

Jeff focuses on IPv6 interoperability, a topic that he covers in lectures and IPv6 hands-on labs at technical conferences worldwide. As an IPv6 Forum Certified IPv6 Trainer, Jeff offers IPv6 Forum Silver and Gold Certified courses. He also provides customized IPv6 training courses and serves as an instructor for the HP Education Services IPv6 Foundations and the Nephos6 IPv6 Foundations course. Jeff is a featured IPv6 instructor for the gogoNET online community, offering webinars and online workshops via the gogoTRAINING initiative. He has also been an "Ask the Wireshark Expert Workshop" facilitator for Riverbed. Jeff has been involved in the computer industry for 35 years and has concentrated his endeavors in the internetworking portion of the industry for more than 28 of those.