Chapter 10. Multi-Area OSPF

This chapter provides information and commands concerning the following topics:

Configuring multi-area OSPF

Passive interfaces

Route summarization

Inter-area summarization

External route summarization

Configuration example: Multi-area OSPF

Configuring Multi-Area OSPF

Image

Note

You can enable OSPF directly on an interface with the ip ospf process ID area area number command. Because this command is configured directly on the interface, it takes precedence over the network area command entered in router configuration mode.

Tip

If you have problems determining which wildcard mask to use to place your interfaces ...

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