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