VMware 2V0-41.23 - VMware NSX 4.x Professional

According to the VMware NSX Documentation, these are the prerequisites for adding nodes to an NSX Management Cluster using the NSX UI:

All nodes must be in the same subnet and have IP connectivity with each other.

A compute manager must be configured and associated with the NSX Manager node.

The NSX Manager node must have a valid license.

The NSX Manager node must have a valid certificate.

Route-based VPN is a VPN type that uses Virtual Tunnel interfaces (VTI) to establish IPSec tunnels between an NSX Edge node and remote sites2. A VTI is a logical interface that is assigned an IP address and is associated with a physical or virtual interface. The VTI acts as an end point of the IPSec tunnel and routes traffic between the NSX Edge node and the remote site2. Route & SSL based VPNs, Policy & Route based VPNs, and SSL-based VPN are not VPN types that use VTI. References: Virtual Private Network (VPN)