Implementing Cisco Application Centric Infrastructure (DCACI) — Question 120

A Cisco ACI environment consists of multiple silent hosts that are often relocated between leaf switches. When the host is relocated, the bridge domain takes more than a few seconds to relearn the host’s new location. The requirement is to minimize the relocation impact and make the ACI fabric relearn the new location of the host faster. Which action must be taken to meet these requirements?

Answer options

• A. Set Unicast Routing to Enabled.
• B. Configure ARP Flooding to Enabled.
• C. Set L2 Unknown Unicast to Hardware Proxy.
• D. Configure IP Data-Plane Learning to No.

Correct answer: B

Explanation

Enabling ARP Flooding allows the ACI fabric to quickly learn the new MAC address of the host after it has been relocated, minimizing downtime. The other options do not directly address the need for swift MAC address learning in a scenario where hosts frequently move, making them less effective for this requirement.