Implementing Cisco Application Centric Infrastructure (DCACI) — Question 176

An engineer configured Layer 2 extension from the ACI fabric and changed the Layer 2 unknown unicast policy from Flood to Hardware Proxy. How does this change affect the flooding of the L2 unknown unicast traffic?

Answer options

• A. It is forwarded to one of the spines to perform as a spine proxy.
• B. It is flooded within the whole fabric.
• C. It is dropped by the leaf when the destination endpoint is not present in the endpoint table.
• D. It is forwarded to one of the APICs to perform as a proxy.

Correct answer: A

Explanation

The correct answer, A, is accurate because switching to Hardware Proxy means the unknown unicast traffic is directed to a spine switch, which manages the proxying. Option B is incorrect as the flooding behavior does not occur; instead, it is managed by the spine. Option C is also wrong because the traffic is not simply dropped; it is handled by the spine. Lastly, option D is incorrect since the traffic is not sent to the APIC but rather to a spine switch.