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One of the features that can be used with OSPF that can reduce device cost and unneeded traffic is stub areas.
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OSPF Advanced Conceptsīefore going into the advanced OSPF configuration, let’s review a couple of key concepts. This article picks up where the Basic OSPF Configuration article left off by briefly discussing and showing the configuration commands required to configure some of this OSPF flexibility. One advantage is that it is vendor independent, and another is that it is very flexible and can be adapted to be used in a number of different network situations. There are a number of advantages to using OSPF over other internal routing protocols. CCNP ROUTE 642-902 Official Certification Guide
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