The internetwork infrastructure of company XYZ consists of a single OSPF area as shown in the
graphic. There is concern that a lack of router resources is impeding internetwork performance. As
part of examining the router resources, the OSPF DRs need to be known. All the router OSPF
priorities are at the default and the router IDs are shown with each router.
Which routers are likely to have been elected as DR? (Choose two.)
A.
Corp-1
B.
Corp-2
C.
Corp-3
D.
Corp-4
E.
Branch-1
F.
Branch-2
Why?
Wouldn’t both the 10.2. range ips be “higher” than 10.1.?
OSPF uses a DR (Designated Router) and BDR (Backup Designated Router) on each multi-access network. … From router Nancy’s perspective, router Susan is the BDR and Donna is the DR. … When a router is not the DR or BDR it’s called a DROTHER.
On LANs, DR and BDR have to be elected. Two rules are used to elect a DR and BDR:
1. router with the highest OSPF priority will become a DR. By default, all routers have a priority of 1
2. if there is a tie, a router with the highest router ID wins the election
The router with the second highest OSPF priority or router ID will become a BDR.