Hello- I had a question that had 4 routers all connected in a circle-there were 3 subnets between them (10.2.0.0 -10.4.0.0 and 10.5.0.0) my limited knowledge understood that the router with the highest local IP address became the DR and the next highest became the BDR-this is if no loopback addy is conifged or prioritys set
What I am unsure about is that do you count the IP for both i/f on the router and apply that to both subnets? eg-if S0 is 10.5.0.2 and e0 is 10.5.0.3 -and they are the highest in the whole area(not just the individual subnet) does that router become DR and BDR? Also if Router A has an S0 IP of 10.5.0.2 and its E0 is 10.4.0.1 and the E0 is connected to Router B which has an IP of 10.4.0.2 -does Router A still take priority ?even though its S0 is connected on another subnet? Or do you take the whole area ? Many thanks ,I hope this makes sense ;)