This redbook provides an introduction as well as a reference to the Transmission Control Protocol/Internet Protocol (TCP/IP) suite of protocols and applications, which provide the foundation and framework for many computer networks, among them the world's largest, the Internet. This redbook explains the basics of TCP/IP and also includes an overview of the latest developments in the world of TCP/IP and the Internet. Special areas of interest are security (IPSec, VPN, certificate and key management, etc.), Java, IP mobility and address management, multicasting, priority and bandwidth reservation, IPv6, directory protocols and, last but not least, the latest hardware and software developments.
TCP/IP Tutorial and Technical Overview (IBM Redbook) explains Transmission Control Protocol/Internet Protocol. Includes: Understand networking fundamentals of the TCP/IP protocol suite
Introduces advanced concepts and new technologies
Includes the latest TCP/IP protocols
It is from December 2006 and may be a bit dated.
It is a very practical book and quite details with plenty of graphs.
It assumes you are aware of many other network protocols. However, it slows down to explain things like the Simple Mail Transfer Protocol.
Nothing is obsolete so you can get a book base for further study.