OSPF Designated Router: Role, Election, and a Worked Failure Scenario
The previous article in this series covered the scalability challenges multiaccess OSPF segments face — unnecessary adjacencies and duplicated LSA flooding. The Designated Router (DR) is OSPF’s solution to both problems. This article covers exactly what the Designated Router does, how it and the Backup Designated Router (BDR) are elected, and walks through a complete,...
