CCNA #041 - OSPF DR, BR and DROTHER Election - do you know the answers?

Key Takeaways

[Music] this is one of multiple videos discussing OSPF designate errata and backup a designated Rada elections have a look at of this segment connected to this layer to switch which rudder will become the designated router will it be right or one with this IP address 10111 priority 100 or will it be routed to you using the default priority and IP address 10 one one two or will it be Rider three with a priority of 20 I P address is 10 1 1 3 or will it be right a fall with a prodigy row IP address 10 1 1 for which rider will become the designated rider on this segment what do you think so let's see if you can answer some additional questions what is the default priority in OSPF what happens when a rider has a priority of zero is at highest or lowest priority that makes a router win an election if Prodi even used is at highest or lowest IP address in this topology I've shut down all the interfaces on the switch and what I'll do now is enable them so that all router interfaces come up at the same time and in the election is held see here's right a fall show IP ospf interface gigabit fastethernet 0/0 we can see that this router has a priority of zero it's state is D or other neighbor relationships are being established so show IP ospf neighbor we have a serial interface which we can ignore for this discussion that's this interface here we are concentrating on the ethernet segment so we can see the priorities of the neighbors rather one has a priority of 100 it's become the designated router router 2 has a priority of 1 it's become a D or other router 3 has a priority of 20 it's become the BTR and once again the local Rada fastethernet 0/0 it's become a D or other so the first criteria for determining who the designator Rada is on a segment is priority highest priority wins default priority is one when the Prada set to zero the Rada will not become a designated router or a backup designated router hope you enjoyed this video if you did please like it and please subscribe to my youtube channel I wish you all the very best [Music] you