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Referring to the exhibit, what is the minimum number of LSPs required to support all four networks?
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JN0-363 Exam - Question 15
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Correct Answer: CD
To support all four networks, you need to establish bi-directional LSPs (Label Switched Paths) between the networks. You have four networks, each one needing a direct or indirect LSP to communicate with the other networks. For a full mesh, the minimal LSPs required are given by the formula n(n-1)/2 for unidirectional LSPs and n(n-1) for bidirectional LSPs, where n is the number of networks. In this case, you can optimize to have one LSP from Network 1 to each of Network 3 and 4, and one LSP from Network 2 to each of Network 3 and 4, resulting in four LSPs. Hence, the minimum number of LSPs required to support all four networks is four.
Discussion
5 commentsloadmeOption: B
May 30, 2023It is B, you only need "2"
loadmeOption: B
May 30, 2023The correct answer should B
samchakrOption: C
Jul 13, 2023It is C. RSVP LSP from - Network 1 to Network 3 Network 1 to Network 4 Network 2 to Network 3 Network 2 to Network 4 and vice-versa
Saran_BrOption: B
Mar 29, 2024R1 to R8 are MPLS CORE Routers, LSP1 for R1 to R8, LSP2 for R8 to R1
ZaraouiOption: B
Jun 29, 2024only two : lsb-R1-to-R5 and lsb-R5-to-R1