⚙️DR & BDR in OSPF — Explained In OSPF, not every router becomes the leader. That’s why we have DR (Designated Router) and BDR (Backup Designated Router) to reduce unnecessary traffic and improve efficiency. 💡 Why DR & BDR are Used? ✔ Reduces OSPF traffic ✔ Manages adjacency relationships ✔ Efficient database exchange ✔ Used in multi-access networks (like Ethernet) 🔑 Election Rule: 👉 Highest priority wins 👉 If same priority → Highest Router ID wins 📌 Most asked in CCNA / CCNP exams & job in
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