An OSPF router receives an LSA, the router checks its sequence number, and this number matches the sequence number of the LSA that the receiving router already has. What does the receiving router do with the LSA?

Question:An OSPF router receives an LSA, the router checks its sequence number, and this number matches the sequence number of the LSA that the receiving router already has. What does the receiving router do with the LSA?

1.Ignores the LSA

2. Adds it to the database

3.Sends newer LSU update to source router

4.Floods the LSA to the other routers


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