According to the VMware Cloud Foundation 5.2 Planning and Preparation Guide and the VMware NSX-T Data Center Installation Guide, the following are critical prerequisites before deploying an NSX Edge cluster in a VCF environment:
B. Verify that the NSX host overlay VLAN and NSX Edge overlay VLAN are routed to each other.
Exact Extract:
“The NSX host overlay network and the NSX Edge overlay network must be able to route traffic between each other to allow tunnel establishment and VM-to-edge connectivity.”
(VMware NSX-T Data Center Installation Guide, VMware Cloud Foundation Planning and Preparation Guide)
C. Create DNS entries for the NSX Edge nodes.
Exact Extract:
“You must create forward and reverse DNS records for each NSX Edge node before deployment. DNS resolution is required for NSX Manager and general network functionality.”
(VMware Cloud Foundation Planning and Preparation Guide)
D. Use separate VLAN IDs and subnets for the NSX host overlay and NSX Edge overlay networks.
Exact Extract:
“The NSX host overlay and the NSX Edge overlay must be on different VLANs and subnets to ensure proper logical separation and traffic flow within the NSX infrastructure.”
(VMware NSX-T Data Center Installation Guide, VMware Cloud Foundation Planning and Preparation Guide)
Why Not the Other Options?
A: vSAN storage policies for Edge VMs are not a documented prerequisite for Edge deployment.
E: BGP configuration is required at a later stage for north-south routing, but not as a deployment prerequisite.
F: Aria Operations is optional and used for monitoring, not a deployment prerequisite.
Summary:
Before deploying an NSX Edge cluster in a VCF environment, you must:
Ensure routing between NSX host and Edge overlay VLANs (B),
Create DNS entries for the NSX Edge nodes (C),
Use separate VLAN IDs and subnets for host and Edge overlays (D).
These prerequisites are confirmed in the official VMware Cloud Foundation and NSX documentation.
