Hey everyone, I was just doing a couple questions on troubleshooting OSPF and I came across a concept that I thought I knew the correct answer but turns out I was wrong so I wanted to post it so you guys can get me righted.
So the question scenario is: No loopbacks or specific router IDs have been configured, and all routers have been brought up at the same time. In a single area I have 3 routers R1, R2 and R3. The configured interface address are (crap I think I just figured it out, but i'll explain the logic just to make sure) R1 Fa0/0 10.11.0.1, R2 Fa0/0 10.11.0.2,R2 S0/0 10.22.0.2, R3 Fa0/0 10.11.0.3.
When I first looked at this I thought "Ok no loopbacks, priority, or RIDs have been manually configured so the DR would be granted to the router with the highest configured interface." (is this the right thinking?) At first glance I was like R3 with the ip 10.11.0.3 is the highest. But what I think I did was I didn't take into account the S0/0 on router 2 which is connected to a different subnet. The subnet being 22 would give it the higher IP address configured as 10.
22.0.2 (correct?).
Am I on the right track or am I not quite correct on understanding the DR election process? Thanks!
