HPE7-A04 Exam - Topic 3 Question 23 Discussion

Actual exam question for HP's HPE7-A04 exam

Question #: 23
Topic #: 3

You are designing an overlay solution for two Data Centers based on the Aruba CX platform. Each Data Center has two rooms and each room is its own fabric. What is the underlay routing protocol run within each room?

AiBGP

BeBGP

COSPF

DIS-IS

Show Suggested Answer

Suggested Answer: C

by Tanja at Nov 20, 2025, 10:04 AM

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Lashandra

15 hours ago

I thought it was iBGP?

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Elbert

6 days ago

It's definitely OSPF for the underlay.

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Margery

11 days ago

OSPF, the classic choice. Tried and true, just like my grandad's old pickup.

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Elli

16 days ago

eBGP? Nah, that's overkill for an internal routing protocol.

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Shawna

21 days ago

IS-IS? What is this, the 90s? OSPF is the clear choice here.

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Graham

26 days ago

iBGP? Really? That's like using a sledgehammer to crack a nut.

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Ahmad

1 month ago

OSPF is the way to go, keeps things simple and straightforward.

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Lyndia

1 month ago

I’m leaning towards iBGP since it’s often used in data center fabrics, but I need to double-check if that applies to the underlay specifically.

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Albina

1 month ago

I feel like IS-IS might be a good option too, but I can't recall if it’s typically used in these types of environments.

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Douglass

2 months ago

I remember practicing a similar question, and I think eBGP is more common for inter-data center connections, but this is about the underlay, right?

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Jody

2 months ago

I think the underlay routing protocol in this scenario could be OSPF, but I'm not entirely sure if it’s the best choice for a fabric setup.

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Josephine

2 months ago

I think I've got this. The question is asking about the underlay, so it's not going to be an exterior gateway protocol like eBGP. I'll go with OSPF as my best guess.

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Pete

2 months ago

I'm a bit confused on the difference between iBGP and eBGP in this context. I'll have to review my notes to make sure I understand the right approach.

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Stephaine

2 months ago

I'm leaning towards OSPF since it's a common choice for data center fabrics. But I'll need to double-check the details on how Aruba CX handles the underlay.

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Johna

3 months ago

I agree, OSPF is great for internal routing.

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Gladys

3 months ago

Okay, let's see. Since each room is its own fabric, I'm guessing the underlay routing protocol would need to be an interior gateway protocol like OSPF or IS-IS.

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Jamal

3 months ago

Hmm, this seems like a tricky one. I'll need to think carefully about the underlay routing protocol within each fabric.

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Valentin

2 months ago

I think OSPF could be a solid choice.

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Apolonia

3 months ago

eBGP might work better for inter-data center communication.

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