You will need to become familiar with how wildcard masks work in order to properly configure many different Cisco IOS commands. Mostly you will encounter wildcard masks with access control lists and when configuring the dynamic routing protocol OSPF. ACL’s are also used when configuring NAT and PAT settings. Because wildcard masks come up often they are a very important topic to understand for your ICND2 and CCNA Exam.

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Now that we are finally to Part 3 of the Router OSPF Series its time to have some fun configuring OSPF. I even made a video showing you how to configure a two area OSPF implementation!

If you still havn’t read Part 1 or Part 2 yet please do so that you understand some OSPF fundamentals.

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This is Part 2 of the Router OSPF Series which will cover topics about OSPF Areas and OSPF LSA’s. Before continuing on I recommend reading Part 1 of the Router OSPF Series which gives an introduction on the topic.

For the ICND2 and CCNA exam you will only need to configure a single area OSPF implementation, but you will still be required to know many different things about a full multi-area OSPF network.

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Router OSPF is the command used to enable OSPF routing on a Cisco router. But before we get into the command syntax I want to give you a brief summary of some important OSPF details for the ICND2 and CCNA Exam.

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