OSPF Design Guide

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OSPF Design Guide

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In the above diagram, routers on the same segment go through a series of states before forming a successful adjacency. The neighbor and DR election are done via the Hello protocol. Whenever a router sees itself in his neighbor's Hello packet, the state transitions to "2-Way". At that point DR and BDR election is performed on multi-access segments. A router continues forming an adjacency with a neighbor if either of the two routers is a DR or BDR or they are connected via a point-to-point or virtual link....

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Nội dung Text: OSPF Design Guide

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