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[AUDIO LOGO]

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Welcome to OSPF area types.

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In this skill, we're going
to be jumping in and talking

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about the different
OSPF area types

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that we have available to us.

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These include things like the
stub area, the total stub,

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we have something called the
not so stubby area or the NSSA,

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and a total NSSA as well.

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Then, of course, there's also
the normal areas, which just

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carry all the OSPF information.

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The purpose of these
areas is to control

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which types of
routes or really LSAs

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get flooded or forwarded
into which area type.

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There's a lot of
situations where

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we don't need all the parts
of our network to know

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all the different prefixes.

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That can be done for
security reasons,

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or ultimately, just to reduce
the size of the routing table

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on the devices.

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So we have a bunch of different
area types to go over.

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So let's go ahead and
jump in and get started.

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I'll see you in the next video.

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