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HP Exam HPE2-W09 Topic 1 Question 56 Discussion

Actual exam question for HP's HPE2-W09 exam
Question #: 56
Topic #: 1
[All HPE2-W09 Questions]

Switch-1 and Switch-2 are AruDaOS-CX switches, which are part of a Virtual Switching Extension (VSX) fabric. Switch-2 is the primary member. Switch-2 experiences a power failure while Switch-1 remains up. Switch-2's power recovers, and Switch-2 reboots.

Is this one of the things that happens when Switch-2 finishes booting?

Solution: Switch-2 wails a period called the link-up delay before it enables Switched Virtual Interfaces (SVls) on its VSX LAGs.

Show Suggested Answer Hide Answer
Suggested Answer: B

Virtual Switching Extension (VSX) is a high-availability technology that allows two ArubaOS-CX switches to operate as a single logical device. VSX link-up delay is a feature that delays bringing downstream VSX links up, following a VSX device reboot or an ISL flap. This prevents traffic blackholing or loops due to transient conditions. The link-up delay timer is not only required when split-recovery is disabled. Split-recovery is another feature that prevents traffic blackholing or loops when the ISL link fails and then recovers. Split-recovery works by disabling the secondary VSX member's downstream links until it synchronizes with the primary member. However, split-recovery does not cover all scenarios where traffic blackholing or loops can occur, such as when both VSX members reboot simultaneously or when the ISL flaps rapidly.Therefore, it is recommended to configure the link-up delay timer even when split-recovery is enabled1. Therefore, this is not a valid guideline for configuring the switches' link-up delay settings.


by Sheron at Apr 14, 2024, 04:54 PM

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Gene
10 months ago
I think if split-recovery is enabled, the switches would be able to recover from failures quickly without needing the delay timer.
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Dana
11 months ago
But what if split-recovery is enabled? Would the link-up delay timer be required then?
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Grover
11 months ago
I agree, if split-recovery is disabled, then the link-up delay timer is not needed.
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Bev
11 months ago
No, I don't think it's necessary.
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Elly
11 months ago
No, I think the link-up delay should be configured regardless of split-recovery status.
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Nieves
11 months ago
I agree, it makes sense to configure the link-up delay settings based on split-recovery.
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Nenita
11 months ago
Yes, the link-up delay timer is only needed when split-recovery is disabled.
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Kindra
1 years ago
Haha, yeah, it's like they're daring us to admit we don't know everything about every Aruba networking feature. I'm just going to do my best and hope for the best!
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Rusty
1 years ago
You know, I bet the exam writers are just trying to trip us up with these super specific questions. They probably want to see how well we can apply our networking knowledge to these edge cases.
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William
1 years ago
Hmm, I'm not too familiar with Virtual Switching Extension (V5X) fabrics. This is a pretty niche topic. I hope I don't get stumped by too many obscure networking questions on the exam.
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Ammie
1 years ago
I agree with Leana. The solution provides a clear explanation, so B) No seems like the right answer here.
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Leana
1 years ago
The solution says the link-up delay timer is only required when split-recovery is disabled. So I guess that means the answer is B) No, it's not a guideline in this case.
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Selma
11 months ago
No
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Hayley
11 months ago
Yes
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Jordan
11 months ago
No
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Hillary
1 years ago
I'm not sure about this question. It seems pretty technical and specific. I hope the exam doesn't have too many questions like this one.
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