Câu 40: 4A0-101: Alcatel-Lucent Interior Routing Protocols

In IS-IS database synchronization, each router compares each LSP described in the received CSNPs with the LSPs in its own database. Which of the following actions is taken if the database contains a newer copy of the LSP?

1. A. The router sends a copy of the LSP from its database to its neighbor — đáp án hiện tại
2. B. The router sends a PSNP to its neighbor describing the LSP in its database.
3. C. The router updates its database with the LSP and floods a copy to its other neighbors.
4. D. The router sends a PSNP to its neighbor to request the LSP.