Match each OSPFv2 network type or interface configuration on a Cisco router to its corresponding DR/BDR election behavior and default Hello/Dead timer settings.
- Broadcast Multi-AccessElects DR/BDR; default Hello/Dead timers are 10s / 40s
- Point-to-PointSuppresses DR/BDR election; default Hello/Dead timers are 10s / 40s
- Interface Priority 0Excludes interface from DR/BDR election; remains permanently in DROTHER state
- Non-Broadcast Multi-Access (NBMA)Elects DR/BDR; default Hello/Dead timers are 30s / 120s
Answer
Broadcast Multi-Access matches with 'Elects DR/BDR; default Hello/Dead timers are 10s / 40s'; Point-to-Point matches with 'Suppresses DR/BDR election; default Hello/Dead timers are 10s / 40s'; Interface Priority 0 matches with 'Excludes interface from DR/BDR election; remains permanently in DROTHER state'; Non-Broadcast Multi-Access (NBMA) matches with 'Elects DR/BDR; default Hello/Dead timers are 30s / 120s'.
Each OSPFv2 network type defines specific election rules and default timer values. Broadcast multi-access networks elect a DR and BDR with 10s Hello and 40s Dead timers. Point-to-Point networks suppress DR/BDR elections while maintaining 10s/40s timers. Interface priority 0 explicitly prevents participation in DR/BDR elections, locking the interface into DROTHER state. NBMA networks elect a DR and BDR with extended 30s/120s timer intervals.
Step-by-Step Solution
Key Concept
OSPFv2 Network Types and DR/BDR Selection Rules