Chapter 11. OSPF and IS-IS

This chapter covers the following subjects:

This chapter reviews the characteristics and design issues of the Open Shortest Path First Version 2 (OSPFv2) and Intermediate System-to-Intermediate System (IS-IS) protocols. For IPv6 networks, OSPFv3 is also covered. OSPFv2, OSPFv3, and IS-IS are link-state routing protocols. They do not broadcast their route tables as distance-vector routing protocols do. Routers using link-state routing protocols send information about the status of their interfaces to all other routers in the area. Then they perform database computations to determine the shortest paths to each destination.

“Do I Know This Already?” Quiz

The purpose of the “Do I Know This Already?” quiz is ...

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