Integrated IS-IS Commands for CCNP BSCI

Contents

  1. ISO Network Entity Title (NET)
  2. Rules for Creating a NET
  3. Examples of NETs: Cisco Implementation
  4. Basic IS-IS Configuration
  5. Neighbors and Timers
  6. Election of the Designated IS (DIS)
  7. Rules for IS-IS Adjacencies
  8. Routing Metrics
  9. Wide Metrics
  10. Manual Summarization
  11. Injecting Default Routes
  12. Defining Router Types
  13. Verifying Integrated IS-IS Routing
  14. Configuration Example: Multi-Area IS-IS

Chapter Description

This chapter provides information and commands concerning a wide range of Intermediate System-to-Intermediate System (IS-IS) topics related to the CCNP BSCI exam.

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Rules for IS-IS Adjacencies

  • L1 routers form L1 adjacencies with L1 and L1-L2 routers in their area.
  • L2 routers form L2 adjacencies with L2 and L1-L2 routers in their area or another area.
  • L1/L2 routers form L1 and L2 adjacencies with each other in their area or another area.
  • An L1 router does not form an adjacency with an L2 router, regardless of area.
  • The system ID must be unique to each router.
  • Hello intervals and hold times do not have to match.
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