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HPE7-A04 Exam - Topic 3 Question 9 Discussion

You are planning to use distributed routing for overlay subnets in an EVPN VXLAN fabric. The customer needs to provide DHCP addresses to some VMs in the tenant-a VRF. The DHCP server is in the shared VRF. What is one step you should take?
C) On each VTEP switch, create a loopback interface in the shared VRF with the same IP on both switches in a VSX pair
A) Change the design to use centralized routing because HPE Aruba CX switches cannot support DHCP relay with distributed routing
B) For every SVI, assign a unique actual IP address, different from the active gateway IP address
D) On each VTEP switch, create a loopback interface in the tenant-a VRF with a different IP on both switches in a VSX pair

HPE7-A04 Exam - Topic 3 Question 9 Discussion

Actual exam question for HP's HPE7-A04 exam
Question #: 9
Topic #: 3
[All HPE7-A04 Questions]

You are planning to use distributed routing for overlay subnets in an EVPN VXLAN fabric. The customer needs to provide DHCP addresses to some VMs in the tenant-a VRF. The DHCP server is in the shared VRF. What is one step you should take?

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Suggested Answer: C

by Sherly at Jan 14, 2025, 11:15 AM

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Ira
8 months ago
I agree with Fernanda, C seems like the best choice for this setup.
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Hoa
8 months ago
Wait, can HPE Aruba CX really not support DHCP relay with distributed routing?
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Salena
8 months ago
Definitely need unique IPs for each SVI, so option B makes sense.
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Margart
9 months ago
Not sure about that, I feel like centralized routing might be safer.
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Fernanda
9 months ago
I think option C is the way to go. Loopback interfaces are key here.
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Barbra
9 months ago
I vaguely recall that each SVI needs a unique IP, but I'm not confident if that applies directly to this scenario with the shared VRF.
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Letha
9 months ago
I feel like option A is too drastic; changing to centralized routing seems unnecessary if there's a way to make distributed routing work.
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Katie
9 months ago
I think we practiced a similar question where we had to set up loopback interfaces for VTEP switches. I wonder if that's the right approach here too.
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Edelmira
10 months ago
I remember something about DHCP relay and how it works with distributed routing, but I'm not entirely sure if HPE Aruba CX switches can handle it.
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Gladys
10 months ago
I'm a bit confused by the VXLAN and VRF aspects of this question. Maybe I should double-check my understanding of how DHCP works in a distributed routing environment before answering.
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Virgie
10 months ago
Okay, I've got this. The distributed routing design means we can't just use the active gateway IP, so we'll need to create a loopback interface in the shared VRF with the same IP on both switches. That should allow the DHCP requests to reach the server.
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Lashawna
10 months ago
Hmm, the key here is that the DHCP server is in the shared VRF, so we need to find a way to relay the DHCP requests from the tenant-a VRF to the shared VRF. I think option C might be the way to go.
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Xochitl
10 months ago
This question seems straightforward, but I want to make sure I understand the requirements correctly before answering.
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Haydee
1 year ago
Option C all the way! Now, if only we could get the DHCP server to serve up some free wifi while we're at it. A guy can dream, right?
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Idella
2 years ago
I'm no EVPN expert, but I'm pretty sure C is the way to go here. Centralized routing? Nah, that's so last year.
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Marva
1 year ago
Yeah, I agree. Centralized routing is not the way to go. Creating a loopback interface in the shared VRF on each VTEP switch seems like the most efficient solution.
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Ula
1 year ago
I think C is the best option here. Creating a loopback interface in the shared VRF on each VTEP switch sounds like the right move.
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Chun
2 years ago
Haha, I bet the person who wrote this question is a real networking wizard. But I'm going with C as well. Gotta love those loopback interfaces!
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Gearldine
2 years ago
Hmm, option C looks good to me. Seems like the best way to ensure the DHCP server in the shared VRF can communicate with the VMs in the tenant-a VRF.
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Fernanda
1 year ago
User 3: Agreed, that would help with communication between the DHCP server and the VMs in the tenant-a VRF.
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Pedro
1 year ago
User 2: Yeah, creating a loopback interface in the shared VRF on each VTEP switch makes sense.
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Helga
1 year ago
User 1: I think option C is the way to go.
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Reuben
2 years ago
That's a good point, Sheridan. Option B could also help with troubleshooting and isolating any issues that may arise.
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Myra
2 years ago
Well, that's a tricky one. I think the answer is C. Creating a loopback interface in the shared VRF with the same IP on both switches seems like the logical way to handle the DHCP server in the shared VRF.
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Flo
1 year ago
Definitely. It's a crucial step to take when planning to use distributed routing for overlay subnets in an EVPN VXLAN fabric.
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Willis
1 year ago
I agree. It's important to have that consistency for the DHCP server to function properly in the shared VRF.
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Mozell
1 year ago
That makes sense. Having the same IP on both switches in a VSX pair would ensure consistency for the DHCP server in the shared VRF.
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Mammie
2 years ago
I think the answer is C. Creating a loopback interface in the shared VRF with the same IP on both switches seems like the logical way to handle the DHCP server in the shared VRF.
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Sheridan
2 years ago
I disagree, I believe option B is more suitable as it allows for unique IP addresses for each SVI, preventing any potential conflicts.
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Reuben
2 years ago
I think option C is the best choice because it ensures the DHCP server in the shared VRF can reach the VMs in the tenant-a VRF.
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