OSPF 면접 질문과 답변
Ques 11. What is OSPF metric, and how is it calculated?
OSPF metric is cost, which is inversely proportional to bandwidth. The formula is cost = 10^8 / bandwidth (in bps).
Ques 12. Explain OSPF DR/BDR election process.
On multi-access networks, OSPF routers elect a Designated Router (DR) and a Backup Designated Router (BDR) to reduce OSPF routing traffic.
Ques 13. What is OSPF adjacency?
OSPF adjacency is a relationship formed between OSPF routers to exchange routing information. It is established through the OSPF hello protocol.
Ques 14. How does OSPF handle network convergence in the presence of a link failure?
OSPF quickly reacts to link failures by recalculating the SPF tree and updating routing tables. This fast convergence is facilitated by OSPF hello and dead interval timers.
Ques 15. What is the OSPF LSAge timer?
The LSAge timer in OSPF is used to age out LSAs from the LSDB. If an LSA's age exceeds its maximum age, it is considered expired and removed from the LSDB.
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