We are planning to migrate the Gateway of all the vlans to ACI. Currently the Gateway is a pair of Nexus 7K and this pair has a Layer 2 Extension to ACI, as well a Layer 3 Out.
90% of the servers are outside ACI, on the Traditional Network, but still customer want to migrate gateway to ACI to prepare for App Centric.
My question is, regarding to have most of the server/services outside ACI, the BD configuration for all these vlans should be in flood, flood, flood, flood in BD, or should I use Hardware proxy and optimized flood, because now is going to be the gateway?
We have some servers in ACI and are using the layer 2 extension to reach their gateways on the Nexus 7K, those EPGs and BD are configured as flood, but now that the gateway is going to be ACI, Im not sure if they will continue having the same configuration, or if it is changed till most of servers are in ACI.