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HPE7-A01 Exam - Topic 6 Question 48 Discussion

You are troubleshooting an issue with a pair of Aruba CX 8360 switches configured with VSX Each switch has multiple VRFs. You need to find the IP address of a particular client device with a known MAC address You run the "show arp" command on the primary switch in the pair but do not find a matching entry for the client MAC address.The client device is connected to an Aruba CX 6100 switch by VSX LAG.Which action can be used to find the IP address successfully?A)B)C)D)
B) Option B
A) Option A
C) Option C
D) Option D

HPE7-A01 Exam - Topic 6 Question 48 Discussion

Actual exam question for HP's HPE7-A01 exam
Question #: 48
Topic #: 6
[All HPE7-A01 Questions]

You are troubleshooting an issue with a pair of Aruba CX 8360 switches configured with VSX Each switch has multiple VRFs. You need to find the IP address of a particular client device with a known MAC address You run the "show arp" command on the primary switch in the pair but do not find a matching entry for the client MAC address.

The client device is connected to an Aruba CX 6100 switch by VSX LAG.

Which action can be used to find the IP address successfully?

A)

B)

C)

D)

Show Suggested Answer Hide Answer
Suggested Answer: B

The show arp command displays the ARP table for a specific VRF or all VRFs on the switch. The ARP table contains the IP address to MAC address mappings for hosts that are directly connected to the switch or reachable through a gateway. If the client device is connected to another switch by VSX LAG, the ARP entry for the client device will not be present on the primary switch unless it has communicated with it recently. Therefore, to find the IP address of the client device, the administrator should run the show arp command on the secondary switch in the VSX pair, specifying the VRF name that contains the client device's subnet. Reference: https://techhub.hpe.com/eginfolib/Aruba/OS-CX_10.04/5200-6692/GUID-9B8F6E8F-9C7A-4F0D-AE7B-9D8E6C5B6A7F.html


by Nadine at Nov 20, 2025, 02:01 AM

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Gregoria
2 months ago
I’m not sure. Maybe we should analyze the VSX setup first?
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Clement
2 months ago
I agree with Option C. It’s the most straightforward approach.
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Laura
2 months ago
I’m leaning towards Option A. It could help us trace the MAC better.
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Winifred
2 months ago
Option B seems good too. It might show the correct ARP table.
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Dannie
3 months ago
Option C seems like the best choice here!
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Sharika
3 months ago
Wait, are you sure it’s not a VLAN issue?
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Desiree
3 months ago
I thought the primary switch would have the entry, though.
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Meghan
3 months ago
Totally agree, that's where the client is connected!
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Shasta
4 months ago
You should check the ARP table on the Aruba CX 6100 switch.
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Emogene
4 months ago
Haha, this question is like a game of hide-and-seek with the client's IP address. Time to put on our detective hats!
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Thaddeus
4 months ago
Option D is the way to go. Gotta love those Aruba CLI tricks!
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Elina
4 months ago
I'm going with Option C. Seems like the most straightforward way to get the IP address.
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Kaycee
4 months ago
Looks like we need to check the VSX LAG on the Aruba CX 6100 switch. That's probably where the client's IP is hiding.
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Cassi
5 months ago
I vaguely recall that we might need to check the VRF settings too. If the client is in a different VRF, it could explain why we can't see the MAC on the primary switch.
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Valentine
5 months ago
I'm not entirely sure, but I feel like there was something about using "show mac-address" commands in our practice. Is that relevant here?
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Tanja
5 months ago
I think I saw a similar question where we had to look at the LAG configuration. Could it be that the MAC is only visible on the 6100 switch?
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Tatum
5 months ago
I remember we discussed how ARP entries can sometimes be missing if the device hasn't communicated recently. Maybe I need to check the other switch?
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Olive
5 months ago
Alright, I think I've got it. The client is connected to the Aruba CX 6100 switch, which is part of the VSX pair. So I need to check the ARP table on the secondary switch, which is Option B. Feels like a good strategy to tackle this one.
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Roselle
5 months ago
I'm a bit confused by this one. The client is connected to a different switch, but the question is asking about the primary switch. I'm not sure which switch's ARP table I should be checking. Maybe I should read through the options again more carefully.
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Latosha
6 months ago
Ah, I see what's going on now. The client is connected via a VSX LAG, so the IP address might be in the ARP table of the secondary switch. I think Option B is the way to go here.
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Phung
6 months ago
Hmm, this one's tricky. Gotta think outside the box to find that IP address.
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Franklyn
6 months ago
I feel confused about the options. What does each one do?
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Dominque
6 months ago
I think we should go with Option C. It makes sense for VRF troubleshooting.
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Kate
7 months ago
Okay, let's see here. Since the client is connected to a different switch, I'm guessing I'll need to check the ARP table on that switch instead. Option C looks promising, but I'll need to double-check the details.
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Rueben
7 months ago
Hmm, this looks tricky. The client device is connected to a different switch, so the "show arp" command on the primary switch may not show the IP address. I'll need to think carefully about the options.
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Celia
1 month ago
Or we could check the VSX configuration for any clues.
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Valda
1 month ago
That could work! It might show us the IP linked to that MAC.
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Bev
1 month ago
Maybe we should try the "show mac address-table" command on the 6100?
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Angelo
2 months ago
Right! The client is on the Aruba CX 6100, not the 8360.
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Florinda
6 months ago
I agree, it's definitely tricky. We might need to check the other switch.
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