OSPF Review Notes
-most popular dynamic routing protocol
-standardized by IEEE
-catagory: Link State Protocol
-algorithm: SPF (Dijkstra)
-metric: COST (Ref BW/Act BW) e.g., 100,000,000/256,000 = 390
-Administrative Distance: 110
-multicast: 224.0.0.5

Router with highest OSPF Priority sending Hello becomes DR
If multiple routers have identical priority, then highest RID becomes DR
Next highest Priority typically becomes the BDR (Backup Designated Router)
Router with the Priority of 0 will not participate in election
After DR election, a router with a better priority doesn't
preempt election but is election for next BDR.