In the world of IT and telecommunications networks, this book remains over the years one of the key references (with Pujolle). Oriented network layers (but not that ..), this book allows to acquire solid fundamentals and a very comprehensive approach to network operations. Reading it is a bit more difficult than the Pujolle but it goes deeper on certain aspects. A book written by a great man (can be read in other reviews), but above all a book written by someone who knows exactly what he is talking.
