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Question 436 - 350-601 discussion

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An engineer is implementing the Cisco ACI fabric and wants to reduce the amount of TCAM resources consumed by the fabric The engineer also needs to ensure that all EPGs m a VRF consume the same services Which action should be taken to meet these requirements?

A.

Configure a single contract provided and consumed in all EPGs

Answers
A.

Configure a single contract provided and consumed in all EPGs

B.

Configure preferred groups in the VRF for al EPGs

Answers
B.

Configure preferred groups in the VRF for al EPGs

C.

Implement an unenforced VRF

Answers
C.

Implement an unenforced VRF

D.

Implement vzAny feature

Answers
D.

Implement vzAny feature

Suggested answer: A

Explanation:

In Cisco ACI, TCAM resources can be optimized by configuring a single contract that is provided and consumed by all EPGs within a VRF. This approach ensures that all EPGs consume the same services, thus reducing the number of individual contracts and associated TCAM entries.By having a common contract, the ACI fabric can efficiently manage access control policies and service insertion without the need for multiple, redundant entries in the TCAM, which can lead to resource exhaustion.Reference: The information is based on the best practices for TCAM management in Cisco ACI fabrics, as detailed in the Cisco community discussions and Cisco's official documentation on TCAM resource issues and workarounds12.Additionally, the concept of using a single contract for multiple EPGs is supported by the Cisco ACI Endpoint Security Group (ESG) Design Guide, which outlines the steps for implementing a single ESG for open communication between subnets (EPG selectors)

asked 10/10/2024
FB Kalaidji
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