Objectives

The overall objective of this book is to bring comprehensive knowledge about the IS-IS routing protocol to the IP networking professional at any career level. Coverage of the IS-IS protocol in this book stretches from basic to advanced concepts. Like most IP routing protocols, IS-IS is still evolving with various enhancements still being discussed and formalized within the IETF. This book builds a bridge between the original IS-IS protocol, which was specified for routing of the ISO Connectionless Network Protocol (CLNP), and all the recent IP- related enhancements. Its practical slant, which exploits the ubiquitous Cisco IOS environment, is designed to provide you hands-on experience for usage and configuration of the IS-IS protocol. In the grand scheme, the material presented should provide you with the necessary advanced skills for understanding, designing, and application of IS-IS as an IGP in IP environments. The numerous tables, references, and troubleshooting information makes this book an excellent reference.