Title: Chapter 6: Multiarea OSPF
Course: RITA MC - CISCO III > Section: Course Outline and Objectives

Overview, Objectives and Outline

Multiarea OSPF is used to divide a large OSPF network. Too many routers in one area increase the load on the CPU and create a large link-state database. In this chapter, directions are provided to effectively partition a large single area into multiple areas. Area 0 used in a single-area OSPF is known as the backbone area.

Discussion is focused on the LSAs exchanged between areas. In addition, activities for configuring OSPFv2 and OSPFv3 are provided. The chapter concludes with theshow commands used to verify OSPF configurations.

This chapter will also contrast classful routing and the widely implemented classless routing methods. It will cover Classless Inter-Domain Routing (CIDR) and the variable-length subnet mask (VLSM) methods. CIDR and VLSM have helped conserve the IPv4 address space using subnetting and summarization techniques.

Learning Objectives for Chapter 6

- Explain why multiarea OSPF is used.
- Explain how multiarea OSPF uses link-state advertisements in order to maintain routing tables.
- Explain how OSPF established neighbor adjacencies in a multiarea OSPF implementation.
- Configure multiarea OSPFv2 in a routed network.
- Configure multiarea route summarization in a routed network.
- Verify multiarea OSPFv2 operations.

Perform the following tasks in order to complete this chapter:

- Launch the Chapter 6 learning module
- Complete the Learning Module Activities
- Complete the Chapter 6 Quiz
- Complete the Chapter 6 Exam

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