Hi @seb_rupik ,
Thank you for your excellent response! I wasn't sure where to begin with this question, and you nailed the answers with one minor exception.
With regard to your 3rd bullet, summarization will impact (decrease) the routing entries in area 0. That is it's purpose. Type 1, 2, and 7 LSAs are flooded within an area so that every area router has an identical LSDB. Type 3,4, and 5 LSAs are flooded to area 0.
You can click on the dropdown in the upper right to edit your response if you like so that others don't have to read multiple response for this discussion.
Thanks,
Tom
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