Under what condition will OSPF DROthers move to the Full state?

In OSPF (Open Shortest Path First) networking, the Full state signifies that a router has successfully completed the adjacency formation process with its neighbors. For a DROther router to transition to the Full state, it must have established a relationship with the designated router (DR) and the backup designated router (BDR).

The DR and BDR serve crucial roles in minimizing OSPF traffic and controlling the exchange of routing information. DROthers do not directly communicate with each other; instead, all routing information flows through the DR. This hierarchy ensures that the OSPF process remains efficient and scalable, particularly in broadcast and non-broadcast multi-access networks.

In cases where the DR is active, the DROther will be able to send and receive updates to and from both the DR and BDR, ensuring that they can synchronize their link-state databases and confirm they are in a Full adjacency state. Without the DR and BDR present to facilitate this process, a DROther cannot achieve the necessary state to effectively participate in the OSPF routing domain.

Thus, the successful transition of DROthers to the Full state is specifically contingent upon their relationship with the DR and BDR.