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Exam JN0-664 topic 1 question 63 discussion

Actual exam question from Juniper's JN0-664
Question #: 63
Topic #: 1
[All JN0-664 Questions]

Click the Exhibit button.

Referring to the exhibit, the PE-to-CE protocol being used is OSPF for the L3VPN. Also, there is an OSPF neighborship between CE-1 and CE-2.
Which statement is correct in this situation?

  • A. You must set a high metric on the CE-1 to PE-1 link for hosts at Site-1 to use the CE-1 to CE-2 link to reach hosts at Site-2.
  • B. You must set a high metric on the CE-1 to CE-2 link for hosts at Site-1 to use the L3VPN to reach hosts at Site-2.
  • C. Hosts at Site-1 will reach hosts at Site-2 through the CE-1 and CE-2 link by default.
  • D. Hosts at Site-1 will reach hosts at Site-2 through the L3VPN by default.
Show Suggested Answer Hide Answer
Suggested Answer: D 🗳️

Comments

Chosen Answer:
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fukJUNIPER
3 weeks, 5 days ago
Selected Answer: C
because the link from Site 1 to Site 2 will be a L3VPN link with the OSPF route the being LSA type 3 (since CE1 and CE2 are in the same area, otherwise it would have been an external Type 5 link). However, the direct link from CE1 - CE2 will be LSA Type 1, and that is more preferred.
upvoted 2 times
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antigel8
1 month ago
Selected Answer: C
C. because the route learnt through the L3VPN is going to be a type 5 while the route coming from site-2 CE is going to be a type 3. If L3VPN must be used as primary then a shame-link setup must take place.
upvoted 1 times
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yaronas
1 month ago
Selected Answer: C
Answer C
upvoted 1 times
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ce57f43
1 month, 2 weeks ago
Selected Answer: C
C is the correct answer
upvoted 1 times
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bololbno
1 month, 2 weeks ago
@Bob_Smith you are right answer C. without sham link always the backdoor link will be preferred no matter how much metric you'll configure to discourage the route.
upvoted 1 times
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easynet13
1 month, 2 weeks ago
Selected Answer: C
C is correct.
upvoted 1 times
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Bob_Smith
3 months, 4 weeks ago
I say C , as OSPF prefers Type 3 (network) over Type 5 (External) which would be redistributed from the BGP L3VPN. In this case, you have to use an OSPF Sham Link between the PEs to make that link more preferred
upvoted 4 times
StargateCommand
3 months, 3 weeks ago
I saw "C" as an answer in another dump. Maybe you're right.
upvoted 1 times
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A (35%)
C (25%)
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