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Juniper JN0-664 Exam - Topic 2 Question 35 Discussion

Actual exam question for Juniper's JN0-664 exam
Question #: 35
Topic #: 2
[All JN0-664 Questions]

Refer to the exhibit.

Click the Exhibit button.

Referring to the exhibit, you must provide VRF Internet access over a single connection for VPN-A Site 1, which connects to PE-1.

Which two statements are correct in this scenario? (Choose two.)

Show Suggested Answer Hide Answer
Suggested Answer: A, B

In the provided exhibit, the configuration involves using a RIB (Routing Information Base) group to facilitate internet access for VPN-A Site 1 through PE-1. The goal is to provide VRF Internet access over a single connection.

1. **Understanding RIB Groups**:

- RIB groups allow for the import and export of routes between different routing tables.

- In this scenario, we have two RIBs: `inet.0` (the main routing table) and `VPN-A.inet.0` (the VRF-specific routing table).

2. **Statement Analysis**:

- **A. You must use the RIB group to move a default route, which is learned through BGP, from the inet.0 table to the VPN-A.inet.0 table.**

- Correct. To provide Internet access to VPN-A, the default route (0.0.0.0/0) learned via BGP in the `inet.0` table must be made available in the `VPN-A.inet.0` table. This is done using the RIB group to import the default route.

- **B. You do not need to use the RIB group to move interface routes from the inet.0 table to the VPN-A.inet.0 table.**

- Correct. Interface routes (connected routes) are typically directly added to both the global and the VRF routing tables without needing a RIB group. These routes are known to the VRF because the interfaces are part of the VRF configuration.

- **C. You do not need to use the RIB group default route, which is learned through BGP, from the inet.0 table to the VPN-A.inet.0 table.**

- Incorrect. As discussed, the default route needs to be imported into the VRF's routing table using a RIB group to enable Internet access for the VRF.

- **D. You must use the RIB group to move interface routes from the inet.0 table to the VPN-A.inet.0 table.**

- Incorrect. Interface routes are directly associated with the VRF interfaces and are automatically known to the VRF routing table. There is no need to use a RIB group for these routes.

**Conclusion**:

The correct answers are:

**A. You must use the RIB group to move a default route, which is learned through BGP, from the inet.0 table to the VPN-A.inet.0 table.**

**B. You do not need to use the RIB group to move interface routes from the inet.0 table to the VPN-A.inet.0 table.**

**Reference**:

- Juniper Networks Documentation on RIB Groups: [RIB Groups Overview](https://www.juniper.net/documentation/en_US/junos/topics/concept/rib-groups-overview.html)

- Junos OS VPNs Configuration Guide: [Junos VPNs Configuration](https://www.juniper.net/documentation/en_US/junos/topics/concept/vpns-overview.html)


by Gilberto at Sep 17, 2024, 08:03 AM

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Sherell
4 months ago
C sounds right, no RIB group needed for that.
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Dulce
5 months ago
D is definitely not needed, just use A and B.
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Samira
5 months ago
Wait, are we sure about B? Seems off to me.
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Lindsey
5 months ago
Totally agree with A, makes sense!
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Juliann
5 months ago
A is correct, you need the RIB group for default routes.
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Tiera
6 months ago
D seems plausible, but I wonder if we really need the RIB group for interface routes. I think we had a similar question in our review.
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Janey
6 months ago
I feel like C could be misleading; we definitely talked about needing to manage default routes with RIB groups, but I can't recall the specifics.
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Donette
6 months ago
I'm not entirely sure about B, but I remember something about interface routes being handled differently than BGP routes.
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Delsie
6 months ago
I think option A might be correct since we discussed how RIB groups are used for route manipulation in our last practice session.
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Winfred
6 months ago
This seems straightforward enough. I'll just need to remember the specifics about using the RIB group to move the routes.
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Lazaro
6 months ago
I've seen similar questions before, so I think I have a good strategy for this. I'll start by identifying which statements are correct based on the information provided.
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Paris
6 months ago
I'm a bit confused by the wording on some of these options. Let me re-read it a couple times to make sure I'm understanding correctly.
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My
6 months ago
Okay, I think I understand the key points here. I'll focus on the RIB group and how to move the routes between the tables.
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Dorinda
6 months ago
Hmm, this looks like a tricky one. I'll need to carefully read through the details and think through the options.
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Shawnta
6 months ago
Read carefully. Multiple agencies, same MCEs, each enforcing their own rules. Yep, that's definitely the parallel approach. Process of elimination works here too.
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Afton
1 year ago
This is a piece of cake! B and D are the answers. I could do this in my sleep. Oh wait, maybe I already did - that would explain a lot about my study habits.
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Ona
1 year ago
C and D, for sure. Why would you need to use the RIB group for the default route? That's just silly. But the interface routes, yeah, you gotta move those over.
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Annett
1 year ago
Agreed, no need for the RIB group for the default route. Moving interface routes is the key.
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Juliana
1 year ago
Definitely, C and D are the way to go. Interface routes are crucial for VRF Internet access.
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Ellsworth
1 year ago
Yeah, using the RIB group for the default route seems unnecessary. Interface routes are the ones that need to be moved.
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Yuette
1 year ago
I agree, C and D are the correct statements. Moving interface routes is necessary.
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Sina
1 year ago
Hmm, this seems tricky. I'm going to go with A and D. Moving that default route to the VPN-A table is key, and you definitely need to use the RIB group for the interface routes.
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Selma
1 year ago
Definitely, A and D are the way to go. It's important to ensure proper routing for VPN-A Site 1 over a single connection.
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Cassie
1 year ago
Yes, using the RIB group for both tasks is crucial in this scenario. Good call on selecting A and D.
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Layla
1 year ago
I agree, A and D are the correct choices. Moving the default route and interface routes is essential for VRF Internet access.
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Lamar
2 years ago
I'm not sure about option B and C, but I think we definitely need to use the RIB group for this scenario.
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Lou
2 years ago
I think B and D are the correct answers here. You don't need to use the RIB group to move the default route, but you do need to use it for the interface routes.
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Maryrose
1 year ago
It's important to ensure VRF Internet access over a single connection for VPN-A Site 1.
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Jacqueline
1 year ago
Using the RIB group for interface routes makes sense.
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Carri
1 year ago
I agree, B and D are the correct answers.
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Linette
2 years ago
I agree with you, Sharen. Option D also seems correct as we need to move interface routes from inet.0 table to VPN-A. inet.0 table.
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Sharen
2 years ago
I think option A is correct because we need to move the default route from inet.0 table to VPN-A. inet.0 table.
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