OSPF Interview Questions and Answers
Ques 16. Explain OSPF virtual links.
Virtual links are used to connect non-backbone areas to the OSPF backbone area (Area 0) when a physical connection is not feasible.
Is it helpful?
Add Comment
View Comments
Ques 17. What is OSPF NSSA (Not-So-Stubby Area)?
NSSA is an OSPF area type that allows injection of external routes while still maintaining some stub area characteristics.
Is it helpful?
Add Comment
View Comments
Ques 18. How does OSPF handle Type 1 and Type 2 LSAs?
Type 1 LSAs represent routers within an area, and Type 2 LSAs represent networks. OSPF routers use these LSAs to build the LSDB.
Is it helpful?
Add Comment
View Comments
Ques 19. What is OSPF graceful restart?
OSPF graceful restart allows a router to temporarily suspend OSPF routing while still forwarding traffic. It is useful during software upgrades or restarts.
Is it helpful?
Add Comment
View Comments
Ques 20. Explain OSPF path selection criteria.
OSPF selects paths based on the OSPF metric (cost). Lower cost paths are preferred. If costs are equal, the router considers other tie-breaker criteria.
Is it helpful?
Add Comment
View Comments
Most helpful rated by users: