Cisco
300-320 · Question #1
300-320 Question #1: Real Exam Question with Answer & Explanation
The correct answer is C: 50. Cisco OSPF design best practices recommend limiting each OSPF area to a maximum of 50 routers to maintain scalability and reduce LSA flooding overhead.
Question
What is the maximum number of routers that each OSPF area (including the backbone) should contain?
Options
- A30
- B10
- C50
- D100
Explanation
Cisco OSPF design best practices recommend limiting each OSPF area to a maximum of 50 routers to maintain scalability and reduce LSA flooding overhead.
Common mistakes.
- A. 30 routers is below the recommended ceiling and is too conservative - it is not the recognized design guideline maximum.
- B. 10 routers per area is far too restrictive and does not reflect any Cisco OSPF design recommendation.
- D. 100 routers per area exceeds the recommended limit and would cause scalability issues such as excessive SPF recalculations and large LSDBs.
Concept tested. OSPF area design scalability router limit
Reference. https://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/7039-1.html
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