When scaling an NSX Edge cluster in VMware Cloud Foundation using SDDC Manager, the following preparatory steps are explicitly required as per the official documentation:
Assign a unique management IP for each Edge node (A):Each new Edge node must have its own unique management IP address for proper identification and network communication.
Assign two Tunnel Endpoint (TEP) addresses for each Edge node (B):Two TEP addresses are needed for overlay network connectivity to ensure redundancy and optimal traffic flow.
Verify DNS records have been added for each new Edge node (D):Proper DNS records must exist for management and operational connectivity, as DNS resolution is critical for Edge node communication and cluster integration.Adding uplinks or placing the Edge cluster in maintenance mode are not prerequisites for adding new Edge nodes, according to the preparation requirements detailed in VMware documentation.