Question

What is the purpose of OSPF LSU (Link-State Update)?

a) To send requested LSAs between neighbors
b) To request specific LSAs from a neighbor
c) To exchange a list of known LSAs between neighbors
d) To update the OSPF routing table

Answer 1

The OSPF LSU's purpose is to send requested LSAs between neighboring routers to update them about the state of the links in the network, which helps maintain accurate and up-to-date routing tables.

Step-by-step explanation:

The purpose of OSPF LSU (Link-State Update) is a) To send requested LSAs between neighbors. OSPF (Open Shortest Path First) is a routing protocol used in IP networks to determine the best path for data packets. Link-State Update (LSU) packets contain updated information about the state of links which is used to maintain and ensure the routing tables are accurate and up to date. When changes occur in the network topology, routers distribute this information in the form of LSAs (Link-State Advertisements) to their OSPF neighbors using LSU messages. The receiving routers process this information to build a consistent view of the network and find the best routing paths.