For students writing applications that run over TCPIP, or for those responsible for managing and maintaining a TCPIP internet, this book's innovative approach helps readers at all levels to truly understand how TCPIP really works. Rather than just describing the protocols from an abstract, standards-related point of view-describing what the standards say the protocol suite should do-TCPIP Illustrated, Volume 1 actually shows the protocols in action. Stevens also recognizes that readers deal with multiple TCPIP implementations on heterogeneous platforms. Therefore, the examples in this book show how current, popular TCPIP implementations operate-SunOS 4.1.3, Solaris 2.2, System V Release 4, BSD386, AIX 3.2.2, and 4.4 BSD-and they relate these real-world implementations to the RFC standards.