what is ospf ? explain types of packet in ospf ?

Question

Accepted Answer

OSPF is a routing protocol used in IP networks to distribute IP routing information.

OSPF stands for Open Shortest Path First
It is a link-state routing protocol
OSPF packets include Hello, Database Description, Link State Request, Link State Update, and Link State Acknowledgement
Hello packets are used to establish and maintain neighbor relationships
Database Description packets are used to exchange information about the contents of the link-state database
Link State Request packets are used to request specific link-state records from a neighbor
Link State Update packets are used to advertise changes to the link-state database
Link State Acknowledgement packets are used to acknowledge receipt of Link State Update packets

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