if you use up-to-art firmware and you specified cli credentials then the only thing you need to do is: Add second engine to the group. Add/modify the switch in the XMC (netsight) to referr to both engines, define vr, realm, accountig enable... Enforce the configuration. The engine will configure your switch throug the CLI properly. Just wait 2-5minutes. You do not need to add those two lines manually, but you can Regards. Z.