Question

In a Cisco ACI fabric, an application team reports that a legacy clustering application relying on gratuitous ARP and silent hosts is failing intermittently after workloads were migrated into a new bridge domain (BD). The BD was created with the default optimized settings. Which BD configuration change should the network engineer make to best support the silent hosts and the application's ARP-based behavior?

Accepted Answer

Enable ARP Flooding and set L2 Unknown Unicast to Flood on the bridge domain

Answer

Disable Unicast Routing and remove the subnet from the bridge domain

Answer

Enable Limit IP Learning to Subnet and set the BD to hardware-proxy

Answer

Change the endpoint retention policy to a lower aging timer on the bridge domain