A vital on-the-job resource for network administrators, this book/CD-ROM package explains how TCP/IP really works, how the individual protocols interact, and how to find the pieces that show what is going on in each packet of data. Included is in-depth coverage of IPv6 (the next generation Internet protocol). The value-adding CD-ROM features hard-to-find protocol analysis tools, complete files of data collected from working networks, and requests for comments.