Implementing Cisco Application Centric Infrastructure (DCACI) — Question 171

In a Cisco ACI fabric, an endpoint moves between two leaf switches during a virtual machine migration. Which action does Cisco ACI take to minimize the impact to traffic during this event?

Answer options

• A. A new leaf switch updates a COOP database on the spine, which causes the old leaf switch to install a bounce entry.
• B. A new leaf switch sends a COOP message to the Cisco APIC cluster to populate a new location of the endpoint.
• C. A new leaf switch sends a COOP message directly to the old leaf switch to update it with new information about the endpoint move.
• D. A new leaf switch floods GARP to every other leaf switch in the fabric, which advertises a new endpoint location to the fabric.

Correct answer: A

Explanation

The correct answer is A because updating the COOP database on the spine allows the old leaf switch to recognize the endpoint's new location without dropping traffic. The other options either involve unnecessary complexity or would not effectively minimize traffic disruption, as they either require additional messaging or would not provide instant updates to the fabric's knowledge of the endpoint's location.