Hi Dave,
your EXOS commands look basically OK. You are enabling .1X only, thus you could add "dot1x" to the line enabling it on the ports.
Policy Manager of ExtremeManagement can be used to configure authentication, see e.g. the GTAC Knowledge article
How to configure netlogin dot1x with policy manager in exos.
For configuration without Policy Manager see
How to configure 802.1x based Netlogin with Radius on EXOS.
Please note that authentication (netlogin) is disabled both globally on the switch and on each port by default on EXOS. This differs from EOS, where it is disabled globally, but enabled on every port by default.
HTH,
Erik