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CCNP BSCI Portable Command Guide by Scott D. Empson

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CHAPTER 4. Integrated IS-IS

This chapter provides information and commands concerning the following Intermediate System-to-Intermediate System (IS-IS) topics:

ISO Network Entity Title (NET)

Rules for creating a NET

Examples of NETs: Cisco implementation

Basic IS-IS configuration

Neighbors and timers

Election of the designated IS (DIS)

Rules for IS-IS adjacencies

Routing metrics

Wide metrics

Manual summarization

Injecting default routes

Defining router types

Verifying integrated IS-IS routing

Configuration example: Multi-area IS-IS

ISO Network Entity Title (NET)

Figure 4-1 shows three of the different formats that an ISO NET can take:

(a) An 8-octet area IS/system ID format

(b) An OSI NSAP format

(c) A GOSIP NSAP format ...

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