Exam JN0-664 topic 1 question 65 discussion

Actual exam question from Juniper's JN0-664

Question #: 65
Topic #: 1

Click the Exhibit button.

You are attempting to summarize routes from the 203.0.113.128/25 IP block on R8 to AS 64500. You implement the export policy shown in the exhibit and all routes from the routing table stop being advertised.

In this scenario, which two steps would you take to summarize the route in BGP? (Choose two.)

A. Replace exact in the export policy with orlonger.
B. Remove the from protocol bgp command from the export policy.
C. Add the set protocols bgp family inet unicast add-path command to allow additional routes to the RIB tables.
D. Add the set routing-options aggregate route 203.0.113.128/25 command.

Show Suggested Answer

Suggested Answer: BD 🗳️

by yaronas at April 10, 2024, 3:10 p.m.

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141f14b

6 months ago

Selected Answer: BD

B,D correct. A - is wrong because if "orlonger" is used, then all /28 prefixes are advertised, hence no summarization happening

upvoted 4 times

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Guru29

7 months, 3 weeks ago

Correct A,D

upvoted 1 times

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fukJUNIPER

8 months, 1 week ago

Selected Answer: AD

AC, because the routes in the routing table are /28, hence it should be /25 or longer not /25 exact. Hence A is valid. All the routes in the routing table are BGP learnt routes, so no need to remove the BGP command from the export policy, as it will not make a difference. Since we want to summarise routes into a /25, we have to use the aggregate route, hence D is a valid answer.

upvoted 3 times

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yaronas

8 months, 3 weeks ago

Selected Answer: BD

You need to summarize routes so you need to use aggregate. Answer BD

upvoted 2 times

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