On a broadcast network, if the DR priorities of two interfaces connecting two routers are set to 0, in which of the following states will the OSPF neighbor relationship stay?
In OSPF (Open Shortest Path First), routers connected over broadcast networks (like Ethernet) elect aDesignated Router (DR)andBackup Designated Router (BDR).DR election is based on theinterface priority. If the priority is set to0, the routercannot become a DR or BDR.
Whenboth routers have a priority of 0,no DR or BDR will be elected, and since the election fails, the neighbor relationship between the two routers willnot advance beyond the 2-Way state. In this state, the routers acknowledge each other but do not exchange routing information in detail (as they only form full adjacency with the DR/BDR).
Therefore, the OSPF neighbor relationship remains in the2-Way state.
[Reference:Huawei HCIE-Datacom V1.0 Study Guide —Chapter: OSPF Advanced ConceptsSection: DR and BDR Election on Broadcast Networks, , , , , , ]
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