What is the final operational state that occurs between an OSPF Designated Router and a DROTHER once they reach convergence?

In OSPF (Open Shortest Path First), once the Designated Router (DR) and DROTHER (non-DR routers) reach a stable and synchronized state after exchanging routing information, the final operational state is identified as "Full." This state indicates that the DR has successfully established adjacencies with all the DROTHER routers in the network segment, ensuring that all OSPF routers have received the complete OSPF link-state database.

The process of reaching this state involves several steps during which the routers exchange information about their link-state databases. Initially, routers begin by identifying neighbors and progressing through several states, including the "Two-way" state, which confirms the receipt of hello packets and acknowledgment of those peers. However, a "Full" state is the ultimate goal, confirming mutual knowledge and agreement on the network topology among the routers, ensuring efficient routing.

In contrast, states like "Loading" and "Exstart" are intermediary phases during the adjacency process. "Loading" occurs when routers are in the process of transferring link-state advertisement (LSA) information, while "Exstart" is when they are negotiating the parameters for the adjacency. Thus, reaching the "Full" state is essential for an OSPF network to