When you download and deploy NSX-T 3.0, the following message is displayed after login:
Some features are not supported with the Endpoint license. Please upgrade the license to use more supported features.
Unlike ESXi and vCenter, which are automatically running in a fully-featured 60-day evaluation mode after installation, NSX-T requires a license. The non-expiring license which is active by default is called "NSX for vShield Endpoint" and has a limited feature set.
This article explains how to register for an evaluation license and get access to NSX-T product downloads.