In the OSPF election process, who will be elected BDR?

In the OSPF election process, the Backup Designated Router (BDR) is elected based on the OSPF router priority and, in the event of a tie, the router ID. The BDR plays a crucial role in OSPF networks by providing redundancy; it stands by to take over the responsibilities of the Designated Router (DR) if it fails.

The correct process for selecting the BDR involves first looking at the priority values configured on the routers. If two routers have the same priority, the router with the higher router ID is chosen as the BDR. Thus, while priority is primarily used for the election, if there's a tie in priority values, the router with the highest router ID becomes the BDR.

The focus on the router with the highest router ID aligns with the understanding that while the first criterion is the configured priority, it would subsequently fall back to the router ID to break any ties. Hence, this emphasizes why router IDs play a critical role in determining the BDR when multiple routers have identical priority values.