The first half of Volume II is arguably the most important textual resource ever written for .

While Volume I focused on interior gateway protocols (IGPs) like OSPF and EIGRP, Volume II is where the theory meets the global internet. It is the advanced practitioner’s guide to the protocols that hold the world’s data together:

The book provides a deep dive into three primary domains critical for modern, large-scale networks:

A major portion of the book is dedicated to BGP-4, the protocol of the Internet. It covers fundamental concepts, path attributes, policy-based routing, and scaling techniques like route reflectors and confederations.