How does OSPF minimize routing update traffic?
A: By using link-state advertisements (LSAs) and only sending updates when changes occur.
Explanation: OSPF doesn’t flood the entire routing table but shares only relevant topology changes using LSAs.
Does OSPF support manual route summarization?
A: Yes.
Explanation: OSPF allows manual summarization at area boundaries or ASBRs, reducing routing table size and improving stability.
Can OSPF be used in multi-vendor environments?
A: Yes, it is an open standard.
Explanation: OSPF is an IETF standard protocol, making it interoperable across different vendor platforms.
What feature does OSPF support to ensure secure neighbor relationships?
A: Peer authentication.
Explanation: OSPF supports plain-text and MD5 authentication to validate OSPF messages between routers.
What are three key benefits of OSPF hierarchical design?
A:
Decreases routing overhead
Speeds up convergence
Confines network instability to single areas
Explanation:
- Decreased overhead: LSAs are limited to their own areas, - -reducing CPU and memory usage.
- Faster convergence: Smaller areas allow quicker SPF calculations.
- Stability containment: Flapping links or route changes in one area don’t affect the entire network.
