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IS-IS Network Design Solutions by Scott Sturgess, Abe Martey

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Chapter 2. Introduction to the IS-IS Routing Protocol

To understand the innards and underlying operational principles of the Intermediate System-to-Intermediate System (IS-IS) routing protocol, it is important to place it in perspective within the overall scheme of internetworking protocols and related technologies. This chapter provides insight into the roots of the IS-IS protocol and discusses the connectionless networking environment that it was envisioned to support by the International Organization for Standardization (ISO).

The chapter begins with an introduction to the Open System Interconnection (OSI) reference model and then briefly discusses the two types of data communications services specified by ISO within the framework of the OSI ...

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