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Cisco 300-620 Exam - Topic 5 Question 75 Discussion

Cisco ACI fabric must send a packet between two pods in a Cisco AC1 Multi-Pod topology where ARP flooding is disabled within the bridge domain. How does a Cisco ACI spine switch .. ARP messages from a leaf switch in POD1 to POD2?
B) ARP optimization is applied and sends ARP to remote anycast. and C) A proxy ARP message is sent to destination group 225.224.0.0.
A) The ARP message is dropped and connectivity is lost between the endpoints.
D) An ARP Glean message is sent to multicast address 239.255.255.240.

Cisco 300-620 Exam - Topic 5 Question 75 Discussion

Actual exam question for Cisco's 300-620 exam
Question #: 75
Topic #: 5
[All 300-620 Questions]

Cisco ACI fabric must send a packet between two pods in a Cisco AC1 Multi-Pod topology where ARP flooding is disabled within the bridge domain. How does a Cisco ACI spine switch .. ARP messages from a leaf switch in POD1 to POD2?

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Suggested Answer: B, C

by Ivan at May 18, 2024, 05:56 PM

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Idella
9 months ago
Definitely not A, that would break everything.
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Mee
9 months ago
Wait, proxy ARP to a multicast? That sounds odd!
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Mireya
10 months ago
No way, I’m leaning towards D.
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Annalee
10 months ago
I think B is the right answer!
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Cristal
10 months ago
ARP flooding is off, so options are limited.
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Mertie
10 months ago
I vaguely remember something about ARP Glean messages, but I can't remember if that's the right approach for this question.
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Mila
11 months ago
I feel like the answer might be related to proxy ARP, but I'm not completely confident about the multicast addresses involved.
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Darrin
11 months ago
I think I practiced a similar question where ARP flooding was involved, but I can't recall the exact details about how it works in a Multi-Pod setup.
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Rebbecca
11 months ago
I remember something about ARP optimization, but I'm not sure if it specifically applies to anycast in this scenario.
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Princess
11 months ago
Based on my understanding of ACI, I think the key is that the spine switch needs to find a way to get the ARP info to the other pod without flooding. The ARP optimization approach sounds like the most likely solution.
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Eliz
11 months ago
I'm pretty confident that the ARP optimization option is the right answer here. The spine switch should be able to send the ARP to a remote anycast address to get the information to the other pod.
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Lenita
11 months ago
Okay, let's see. Since ARP flooding is disabled, the spine switch can't just broadcast the ARP message. I'm guessing it has to use some kind of optimization or proxy to get the ARP info to the other pod.
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Martina
11 months ago
Hmm, this looks like a tricky one. I'll need to think through the ACI fabric and Multi-Pod topology to figure out how the spine switch handles ARP messages in this scenario.
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Dick
11 months ago
I'm a bit confused on the proxy ARP and ARP Glean options. I'm not sure how those would work with the Multi-Pod setup and disabled ARP flooding. I'll need to review those in more detail.
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Evan
11 months ago
I'm a bit confused by this question. Involving the community could be good, but there are also potential security concerns to consider. I'll need to review my notes and think through the tradeoffs.
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Kristofer
11 months ago
Okay, I think the key here is to focus on the part of the question that says "it is not usually necessary to build something new." That sounds like it could be the "Start where you are" principle. I'll go with that.
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Ronny
1 year ago
As a Cisco ACI expert, I can confidently say that Option B is the way to go. Anything else would be a rookie mistake.
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Jaime
1 year ago
I've seen Option B work seamlessly in Cisco ACI fabric deployments, it's definitely the recommended choice.
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Staci
1 year ago
Definitely, ARP optimization is the best approach to ensure connectivity between pods without ARP flooding.
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Asha
1 year ago
I agree, Option B is the most efficient way to handle ARP messages in a Cisco ACI Multi-Pod topology.
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Lucina
1 year ago
Come on, this is a Cisco ACI exam! Of course the answer is going to be something related to ARP optimization. I'm going with Option B.
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Josefa
1 year ago
Option D looks interesting, but I don't think sending an ARP Glean message to a multicast address is the right solution here. Gotta stay focused on the ARP handling in the Multi-Pod scenario.
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Corinne
1 year ago
Hmm, I'm not too sure about this. Maybe I should have read the Cisco ACI Multi-Pod documentation a bit more carefully.
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Carmen
1 year ago
User1: Oh, I see. Thanks for clarifying!
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Rhea
1 year ago
User2: No, I believe the correct answer is D) An ARP Glean message is sent to multicast address 239.255.255.240.
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German
1 year ago
User1: Yeah, it's important to understand the details of the Cisco ACI Multi-Pod topology to ensure proper connectivity.
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Gearldine
1 year ago
User2: That makes sense. I believe that's how the Cisco ACI spine switch handles ARP messages between pods.
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Margret
1 year ago
User1: I think the answer is B) ARP optimization is applied and sends ARP to remote anycast.
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Royce
1 year ago
User1: I think the answer is B) ARP optimization is applied and sends ARP to remote anycast.
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Arlette
1 year ago
Option B seems like the correct answer. ARP optimization is typically used to handle ARP traffic in Cisco ACI Multi-Pod environments where ARP flooding is disabled.
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Tish
1 year ago
That's right, it sends ARP to remote anycast.
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Lera
1 year ago
It helps to handle ARP traffic efficiently.
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Reed
1 year ago
Yes, ARP optimization is used in Multi-Pod environments.
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Vivan
1 year ago
I think option B is the correct answer.
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Roosevelt
1 year ago
I'm not sure, but I think the answer might be C) A proxy ARP message is sent to destination group 225.224.0.0.
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Novella
1 year ago
I agree with Fatima, that makes sense because it would optimize the ARP process.
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Fatima
1 year ago
I think the answer is B) ARP optimization is applied and sends ARP to remote anycast.
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