In the OSPF protocol, explain how DR, BDR are selected in areas with different subnets?

Question

Computer networks

I study OSPF and something is not clear to me. If you plan the network in such a way that each area will be in its own network. (ie area 0 -192.168.1.0\24; area 1-192.168.1.1\24; area 2-192.168.1.2\24; area 3- 192.168.1.3\24; etc) then DR and BDR will be selected each time within this network? Those. each area will have its own DR and BDR?

Answer 1

The question is asked very ambiguously ...
but for all possible interpretations that come to mind, the answer is: "yes."

Answer 2

Kmk, there is an error here, well, or an inaccuracy with addressing. Rather, it should be like this, area 0 - 192.168.0.0/24, area 1 - 192.168.1.0/24, area 2 - 192.168.2.0/24 etc. Well, to make it easier to understand, you need to sit down and draw a network diagram in order to accurately represent what is there ...

Answer 3

OSPF works from the interface, which means that if your AREAs are on the same physical interface, then they will have DRs in one instance, if AREAs are created for interfaces without multiple access (tunnels or ptp connections), then DR elections 'ov will not pass at all, tk. for such types of "physics" DRs are not used.