Which information do routers in Area 1 have about Area 2? Which information do they have about the backbone area (Area 0)?
What will be an ideal response?
Routers in Area 1 have information about Area 2 through the summary net link states data. Summary LSAs are generated by Area Border Routers and describe inter-area routes to various networks. They can also be used for aggregating routes. The link-state IP is the destination network number. The ABR routers such as PC1 and PC2 have information about the backbone area. ABRs are attached to multiple OSPF areas and will have multiple copies of the link-state database because of it. The routing will run one database for each area that will be summarized, and then it will be presented to the backbone for distribution to other areas.
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What will be an ideal response?
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