Definitions of Key Terms

After your first reading of the chapter, try to define these key terms, but do not be concerned about getting them all correct at that time. Chapter 22 directs you in how to use these terms for late-stage preparation for the exam.

2-way state

full state

Area Border Router (ABR)

designated router

backup designated router

fully adjacent

Hello Interval

Dead Interval

link-state advertisement

link-state update

neighbor

router ID (RID)

topology database

shortest path first (SPF)

internal router

router LSA

network LSA

summary LSA

backbone area

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