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Juniper JN0-664 Exam - Topic 1 Question 6 Discussion

Actual exam question for Juniper's JN0-664 exam
Question #: 6
Topic #: 1
[All JN0-664 Questions]

Exhibit

Referring to the exhibit, you are receiving the 192.168 0 0/16 route on both R3 and R4 from your EBGP neighbor You must ensure that R1 and R2 receive both BGP routes from the route reflector

In this scenario, which BGP feature should you configure to accomplish this behavior?

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Suggested Answer: A

BGP add-path is a feature that allows the advertisement of multiple paths through the same peering session for the same prefix without the new paths implicitly replacing any previous paths. This behavior promotes path diversity and reduces multi-exit discriminator (MED) oscillations. BGP add-path is implemented by adding a path identifier to each path in the NLRI. The path identifier can be considered as something similar to a route distinguisher in VPNs, except that a path ID can apply to any address family.Path IDs are unique to a peering session and are generated for each network3. In this question, we have a route reflector (RR) that receives two routes for the same prefix (192.168.0.0/16) from an EBGP neighbor. By default, the RR will only advertise its best path to its clients (R1 and R2). However, we want R1 and R2 to receive both routes from the RR. To achieve this, we need to configure BGP add-path on the RR and enable it to send multiple paths for the same prefix to its clients.


by Jade at Apr 19, 2023, 12:46 PM

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Selma
4 months ago
Route-target doesn't apply here, right?
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Glenn
4 months ago
Wait, are we sure add-path is the only option?
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Denny
4 months ago
I thought multipath might work too, but not sure.
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Mendy
4 months ago
Totally agree, add-path is the way to go here.
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Lashawn
4 months ago
Looks like we need to use add-path for this!
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Royal
5 months ago
I feel like multihop is more about establishing connections rather than managing route distribution, so I don't think that's the answer.
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Natalie
5 months ago
Route-target sounds familiar, but I don't recall it being directly related to BGP route distribution like this.
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Blondell
5 months ago
I remember practicing a similar question, and I think multipath could be relevant here, but it might not be the right choice for this specific scenario.
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Alpha
5 months ago
I think we might need to use add-path to allow R1 and R2 to receive both routes, but I'm not completely sure.
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Jettie
5 months ago
This looks like a straightforward management theory question. I'll review the options and try to identify the key characteristics of production-oriented management styles.
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Carin
5 months ago
I'm a bit confused by some of these options. Setting tablespace alerts and upgrading abstract data types - are those really mandatory? I'll need to review the database upgrade documentation to be sure.
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