The Complete Is-Is Routing Protocol

ISBN-13: 9781852338220 / Angielski / Miękka / 2005 / 540 str.

Hannes Gredler; Walter J. Goralski

Opis

IS-IS has always been my favourite Interior Gateway Protocol. Its elegant simplicity, its well-structured data formats, its ?exibility and easy extensibility are all appealing IS-IS epitomizes link-state routing. Whether for this reason or others, IS-IS is the IGP of choice in some of the world s largest networks. Thus, if one is at all interested in routing, it is well worth the time and effort to learn IS-IS. However, it is hazardous to call any routing protocol simple . Every design decision, be it in architecture, implementation or deployment, has consequences, some unanti- pated, some unknowable, some dire. Interactions between different implementations, the dynamic nature of routing, and new protocol features all contribute to making routing protocols complex to design, write and deploy effectively in networks. For example, IS-IS started as a link-state routing protocol for ISO networks. It has since evolved sign- cantly: IS-IS has IPv4 and IPv6 (and IPX) addressing; IS-IS can carry information about multiple topologies; link attributes have expanded to include traf?c engineering para- ters; a new methodology for restarting IS-IS gracefully has been developed. IS-IS even has extensions for use in non-packet networks, such as SONET and optical networks, as part of the Generalized Multi-Protocol Label Switching (G-MPLS) protocol suite. Understanding all of what IS-IS offers and keeping abreast of the newer protocol f- tures is a weighty endeavour, but one that is absolutely essential for all serious netwo- ing engineers, whether they are developing code or running networks."

Recenzje

From the reviews of the first edition:

"The book presents a wide range of problems concerning operation of the IS-IS routing protocol based on ISO-OSI standards, and belonging to the class of dynamic Interior Gateway and link-state routing protocols. ... the material presented in the book is well organized. ... the book can be undoubtedly very useful for all networking specialists." (Jozef Wozniak, Zentralblatt MATH, Vol. 1070, 2005)

Spis treści

Introduction, Motivation, and Historical Background Router Architecture Introduction to the IOS and JUNOS Command Line Interface IS-IS Basics Neighbour discovery and handshaking Generating, Flooding, and Aging LSPs Pseudo-Nodes and Designated Routers Synchronizing Databases Fragmentation SPF and Route Calculation TLVs and sub-TLVs IP Reachability Information IS-IS Extensions Traffic Engineering and MPLS Troubleshooting Network Design Future of IS-IS

O autorze

Walter J. Goralski is an instructor and course developer at Juniper Networks, the number-two vendor of network routing products. Goralski has more than 35 years of experience in data communications, including 14 years at AT&T. He has written seven books on networking topics, the most recent one on optical networking.