Discuss Cisco 300-620 Exam Topic 5 Question 108

An engineer deploys a two-pod Cisco ACI Multi-Pod environment. Why should no more than two Cisco APIC controllers be deployed in the same pod?

Ato enable equal capacity to scale in each pod

Bto avoid losing all replicas of a shard if a pod fails

Cto avoid hair-pinning traffic that is destined for the primary APIC controller between pods

Dto ensure that all nodes in all pods have local access to a controller

Suggested Answer: B

In a two-pod Cisco ACI Multi-Pod environment, it is recommended to deploy no more than two Cisco APIC controllers in the same pod to avoid losing all replicas of a shard if a pod fails. The APIC cluster is a distributed system where each APIC contains a replica of the configuration database, referred to as a shard. If all replicas of a shard were located in the same pod and that pod were to fail, it would result in the loss of the shard and potentially impact the entire fabric's operation.By distributing the APIC controllers across pods, the risk of losing all replicas due to a single point of failure is mitigated, enhancing the overall resiliency of the system1.

ACI Multi-Pod White Paper - Cisco1

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26 comments · newest first

Alysa 2 months ago

D is also valid. Local access is crucial for performance.

Anisha 2 months ago

C seems right too. Avoiding hair-pinning is important.

Whitley 2 months ago

I agree, B makes sense. Pod failure is critical.

Shenika 2 months ago

I think it's B. Losing all replicas is a big risk.

Deeann 2 months ago

D is important too, local access is crucial for performance.

Felicitas 2 months ago

C is also a good point. Hair-pinning can cause delays.

Leonora 3 months ago

I agree, B makes sense. Pod failure could be catastrophic.

Lynelle 3 months ago

I think it's B. Losing all replicas is a big risk.

Antione 3 months ago

D seems right too. Local access is crucial for performance.

Emilio 3 months ago

But C is also important. Traffic issues can cause delays.

Gerald 3 months ago

I agree, B makes sense. Pod failure is serious.

Mohammad 3 months ago

I think it's B. Losing all replicas is a big risk.

Nathan 4 months ago

I thought having more controllers would be better for redundancy?

Kathrine 4 months ago

B is crucial—losing all replicas would be a disaster!

Haydee 5 months ago

Wait, why can't we have more than two APICs? Seems odd.

Herminia 6 months ago

Totally agree, option C makes the most sense.

Alaine 6 months ago

It's all about avoiding traffic issues between pods!

Bulah 6 months ago

I feel like D is also important for local access, though.

Willis 6 months ago

C is key to keeping traffic efficient, no doubt!

Stephanie 6 months ago

Wait, I thought you could have more than two APICs in a pod?

Earnestine 6 months ago

Totally agree, option B makes the most sense.

Bulah 7 months ago

It's all about avoiding single points of failure!

Belen 7 months ago

I practiced a similar question, and I think it was about scaling capacity, but that doesn't seem quite right for this scenario.

Tamra 7 months ago

I feel like the answer has to do with ensuring local access to a controller for all nodes, but I can't recall the exact details.

Shawna 7 months ago

I remember something about traffic management, so maybe it's to avoid hair-pinning traffic between pods?

Carma 7 months ago

I think it might be related to avoiding losing all replicas of a shard if a pod fails, but I'm not entirely sure.

Cisco 300-620 Exam - Topic 5 Question 108 Discussion