OSPF gives an introduction to the Internet and its routing protocols covering unicast and multicast routing protocols and techniques for monitoring and debugging routing in a TCP/IP network. This book provides a detailed description of OSPF (Open Shortest Path First), which was developed by the author, and explains why OSPF was developed and how it greatly improves network efficiency. Each chapter contains exercises to help you get a better understanding of how to efficiently implement algorithms used in OSPF.