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F5 Networks 301b Exam - Topic 8 Question 116 Discussion

An application is configured on an LTM device:Virtual server: 10.0.0.1:80 (VLAN vlan301)SNAT IP: 10.0.0.1Pool members: 10.0.1.1:8080, 10.0.1.2:8080, 10.0.1.3:8080 (VLAN vlan302)Which packet capture should the LTM Specialist perform on the LTM device command line interface to capture only client traffic specifically for this virtual server?
B) tcpdump -ni vlan301 -s 0 'port 80 and host 10.0.0.1' -w /var/tmp/trace.cap
A) tcpdump -ni 0.0:nnn -s 0 'host 10.0.0.1' -w /var/tmp/trace.cap
C) tcpdump -ni vlan301 -s 0 'port 8080 and host 10.0.1.1 or host 10.0.1.2 or host 10.0.1.3' -w /var/tmp/trace.cap
D) tcpdump -ni vlan302 -s 0 'port 8080 and host 10.0.1.1 or host 10.0.1.2 or host 10.0.1.3' -w /var/tmp/trace.cap
E) tcpdump -ni 0.0:nnn -s 0 '(port 80 and host 10.0.0.1) or (port 8080 and host 10.0.1.1 or host 10.0.1.2 or host 10.0.1.3)' -w /var/tmp/trace.cap

F5 Networks 301b Exam - Topic 8 Question 116 Discussion

Actual exam question for F5 Networks's 301b exam
Question #: 116
Topic #: 8
[All 301b Questions]

An application is configured on an LTM device:

Virtual server: 10.0.0.1:80 (VLAN vlan301)

SNAT IP: 10.0.0.1

Pool members: 10.0.1.1:8080, 10.0.1.2:8080, 10.0.1.3:8080 (VLAN vlan302)

Which packet capture should the LTM Specialist perform on the LTM device command line interface to capture only client traffic specifically for this virtual server?

Show Suggested Answer Hide Answer
Suggested Answer: B

by Jestine at Aug 17, 2025, 08:12 PM

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Paris
6 months ago
I’m surprised they didn’t mention filtering by source IP too!
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Dong
7 months ago
Wait, why would you use vlan302? That seems off.
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Florinda
7 months ago
Definitely going with B, it’s straightforward!
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Eden
7 months ago
I think E could work too, but it seems a bit overkill.
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Truman
8 months ago
B is the right choice for capturing client traffic on port 80.
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Mona
8 months ago
I’m not completely confident, but I feel like we shouldn't be capturing on vlan302 since that’s for the pool members, not the client traffic.
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Georgiana
8 months ago
I practiced a similar question, and I believe option B is correct because it filters for traffic on port 80 for the virtual server.
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Samira
9 months ago
I'm a bit unsure, but I remember something about using 'port 80' for the virtual server and 'port 8080' for the pool members.
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Owen
9 months ago
I think we need to capture traffic specifically on vlan301 since that's where the virtual server is configured.
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Angelica
9 months ago
Hmm, this is a tricky one. I'm not sure if I should focus on the virtual server IP or the pool member IPs. I think I'll go with option C just to be safe.
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Vernell
9 months ago
I'm feeling pretty confident about this one. The key is to capture the traffic to the virtual server IP address on port 80, as well as the traffic to the pool member IPs on port 8080. Option E looks like it covers all of that.
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Cherelle
9 months ago
Okay, let's see. The virtual server is on VLAN 301, and the pool members are on VLAN 302. So I think option D might be the best choice to capture the traffic to the pool members.
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Elbert
9 months ago
Hmm, I'm a bit unsure about this one. There are a lot of details to consider, like the VLAN information and the SNAT IP. I'll need to think this through carefully.
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Erinn
10 months ago
This looks like a pretty straightforward tcpdump question. I think I'll go with option B - that seems to capture the client traffic specifically for the virtual server.
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Carlene
10 months ago
I'm leaning towards Option E. It covers both the virtual server and the pool members, which seems more comprehensive.
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Clorinda
6 months ago
E might be overkill, but it could help in troubleshooting later.
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Kaitlyn
7 months ago
Option E does seem comprehensive, but is it necessary to capture both?
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Fausto
7 months ago
I think Option B is more focused on the virtual server.
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Golda
8 months ago
I agree with Fausto. B is cleaner for just client traffic.
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Barrett
11 months ago
Option B looks like the right choice to me. It's capturing traffic on the VLAN where the virtual server is configured and filtering for the specific virtual server IP and port.
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