Run the following command to create a Non-CLOS fabric containing border-leaf devices which can be used for the purpose of centralized routing:
efa fabric create --name <fabric-name> --type non-clos
efa fabric device add-bulk --name <fabric-name>
--rack <leaf-rack-name> --ip <leaf-ip-pair>
--border-leaf-rack <bl-rack-name> --border-leaf-ip <bl-ip-pair>
efa fabric configure --name <fabric-name>