Regardless of whether you're using a single network type or a mix of types, you need to configure your network environment to ensure that all instances have outgoing access to the external resources you want to use.
This includes:
- The data sources where your data is stored.
- Identity providers for user authentication.
- Email servers that you want to use for sending email notifications.
- Any external search indexes (for example, HDDS indexes) that you want to make accessible through HCI.