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Exam JN0-663 topic 1 question 30 discussion

Actual exam question from Juniper's JN0-663
Question #: 30
Topic #: 1
[All JN0-663 Questions]


You are the administrator of AS 65512. You are learning the 192.168.1.0/24 prefix from both AS 100 and AS 200. You want traffic destined to the 192.168.1.0.0/24 prefix to exit your AS towards AS 200.
How would you accomplish this task?

  • A. Configure an import routing policy on PE-2 to set a higher MED on the path learned from AS 100.
  • B. Configure an import routing policy on PE-2 to modify the origin attribute on the path learned from AS 100.
  • C. Configure an import routing policy on PE-2 to set a higher local preference value on the path learned from AS 200.
  • D. Configure an import routing policy on PE-2 to append the AS path attribute on the path learned from AS 100.
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️
by ak_sisko at Sept. 1, 2021, 1:43 p.m.

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ak_sisko
Highly Voted 3 years, 2 months ago
Correct answer is C
upvoted 6 times
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[Removed]
Most Recent 1 year, 7 months ago
A - probably should word but in practice in lab does not seem to B - Yes will work proven in lab C- Will work D- As Path Prepending So A-Maybe , and B,C,D are all valid answers
upvoted 1 times
TriviumGG
1 year, 3 months ago
First I was thinking of MED, but it is used to tell the other AS's how to enter your network. Since the remote AS are different they won't see the difference in metrics between the two routes with different MED.
upvoted 1 times
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NinjaCloud
2 years, 6 months ago
Local preference works only for iBGP sesssions. Correct answer is D
upvoted 1 times
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Ahmed2021
2 years, 6 months ago
Local preference is working for internal route only not for the route learned between ASs so the correct answer is D
upvoted 2 times
magmartin
2 years, 4 months ago
That's not right. Local preference is only sent to iBGP peers, but this parameter works for every route, either received through iBGP or eBGP, as is one of the first tiebreakers used in the BGP path selection process. As routes received through an eBGP neighbor does not include this parameter, a default value of 100 is assigned, but this can be modified using an import policy.
upvoted 4 times
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oceans1908
2 years, 9 months ago
C is correct
upvoted 2 times
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B (20%)
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