Which router will be elected DR in the OSPF election process?

In OSPF (Open Shortest Path First), the Designated Router (DR) is crucial for reducing the amount of OSPF routing protocol traffic on multi-access networks, such as Ethernet. The election process for the DR involves determining which router will act as the centralized point for exchanging routing information among neighboring routers.

The correct choice is the one that states the router with the highest router ID will be elected as the DR. The router ID is a unique identifier for each OSPF router and is typically derived from the highest IP address of the active interfaces or manually configured. During the DR election process, if routers have the same priority value, the router with the highest router ID will win. This mechanism ensures that a unique and well-defined router is responsible for distributing OSPF routing updates, which allows for more efficient communication and minimizes broadcast traffic on the network.

The selection process involves several steps, where priority values are considered first, and if those are equal, the router ID becomes the determining factor. Understanding this hierarchy in the OSPF election process is critical for network design and troubleshooting, as it directly impacts routing stability and efficiency in OSPF networks.