Exam JN0-351 topic 1 question 87 discussion

Actual exam question from Juniper's JN0-351

Question #: 87
Topic #: 1

R1 has a BGP session with a router that has a peer autonomous system number of 64501. It is exchanging routes, and is advertising those routes to IBGP peers. The downstream IBGP peers, however, cannot pass traffic to the advertised networks.

Referring to the exhibit, which configuration change must occur to solve this problem?

A. The BGP group int-64503 must include the export next-hop-self policy.
B. The BGP group ext-64501 must include the import next-hop-self policy.
C. The BGP group int-64503 must include the import next-hop-self policy.
D. The BGP group ext-64501 must include the export next-hop-self policy.

Show Suggested Answer

Suggested Answer: A 🗳️

by koloooo at June 10, 2025, 8:53 a.m.

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koloooo

5 days, 3 hours ago

Selected Answer: A

https://supportportal.juniper.net/s/article/SRX-BGP-NEXT-HOP-self-configuration?language=en_US

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koloooo

5 days, 3 hours ago

Selected Answer: A

A next-hop self is typically used for iBGP neighbors. When external BGP routes are learned they are automatically re-advertised to iBGP neighbors with the original next-hop (of the eBGP neighbor). The next-hop self policy will set the next-hop to the loopback interface (which is typically used for iBGP peerings).

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