You probably want to use an existing Identity Store such as Active Directory when managing your network infrastructure – including DNAC. Below is a guide on how to configure this functionality.

When you enable external authentication in DNAC it will not exempt you from using the locally defined users on DNAC – at least not the built-in admin user.

DNAC External Authentication Configuration

Locate the “External Authentication” page in Settings -> System Settings -> Users

When you want to deploy the ISE Proof of Value OVA in a ESXi 6.5 this happens:

We create a new VM, specify the name and select the ova:[

]1

In the last step, you’ll receive an error that “A required disk image was missing.”