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OSPF Visibility of the Network.

OSPF Visibility of the Network.

Unlike RIP and EIGRP, OSPF is a Link State protocol, what does that mean ? does it mean a router configured with OSPF knows the topology in every router that is configured with OSPF ?at least the routers that are in t same area ?

Reading about SDN , this technology has a capability to have visibility of the whole network topology.  is it the same as OSPF routers in the same area ?

Thank you
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Soulja
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OSPF and SDN is similar in knowing the whole topology. SDN moreso because it is essentially centralized routing using some type of controller.

if OSPF is configured with so many areas. SDN will know the whole topology of all areas. in OSPF , each router will know just about the topology of the areas it is configured with. [one router can be in more than one area]


Correct ?
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Thanks