Implementing Cisco Application Centric Infrastructure (DCACI) — Question 292

A Cisco ACI leaf node has received a Layer 2 frame from an unknown endpoint. The bridge domain is configured for Hardware Proxy. Which action will the ACI fabric take on the traffic?

Answer options

• A. The leaf will flood the traffic to all attached nodes configured with the bridge domain. Attached nodes will respond with a proxy ARP.
• B. The leaf will flood the traffic to all attached nodes configured with the bridge domain. Attached nodes will flood the traffic to endpoints.
• C. The leaf will forward the traffic to a spine. If the spine has no information in the COOP database, the traffic will be dropped.
• D. The leaf will forward the traffic to a spine. If the spine has no information in the COOP database, the traffic will be flooded.

Correct answer: C

Explanation

The correct answer is C because when the ACI leaf node receives traffic from an unknown endpoint and has Hardware Proxy configured, it forwards the traffic to the spine. If the spine has no entry in the COOP database, the traffic is dropped to prevent flooding of unknown traffic. Options A and B incorrectly suggest that the traffic would be flooded to other nodes, which is not the behavior for unknown endpoints in this context. Option D also misrepresents the action by suggesting flooding instead of dropping the traffic.