At this point of the series we created a DAG witness server, pre-staged the Active Directory that will be used by the DAG in this Tutorial and last but not least we configured the Network Adapters (2 adapters) in order to have a network for the clients and a second one just for replication.
Read more at source: http://andersonpatricio.ca/managing-dag-creating-a-new-dag-using-eac/