Part 40– Deploying Additional NSX Managers Using the VCF 9.1 SDDC Manager API

This guide walks through the exact workflow to bring an NSX environment from zero to functional using the VCF 9.1 SDDC Manager API and the new vCenter‑driven NSX networking workflow.

Since NSX Manager is now managed by VCF Operations, most lifecycle tasks must be performed from VCF Ops, not the NSX UI.

Search for NSX and Open the GET section

Run GET NSXT Cluster.

This returns the NSX‑T cluster information. Copy the cluster ID — you’ll need it for scaling out the NSX Manager cluster.

In the same NNSX API section, go to: POST – NSXT Scale Out

Paste the cluster ID into the required field.

In the request body, provide the details of the new NSX Managers. Remove all IPv6 fields entirely — do not set them to empty values.

Example Request Body

JavaScript

{
  "nsxManagerSpecs": [
    {
      "name": "vcf9-nsx02",
      "networkDetailsSpec": {
        "dnsName": "vcf9-nsx02.ash.local",
        "gateway": "172.16.11.253",
        "ipAddress": "172.16.11.91",
        "subnetMask": "255.255.255.0"
      }
    },
    {
      "name": "vcf9-nsx03",
      "networkDetailsSpec": {
        "dnsName": "vcf9-nsx03.ash.local",
        "gateway": "172.16.11.253",
        "ipAddress": "172.16.11.92",
        "subnetMask": "255.255.255.0"
      }
    }
  ]
}

{
  "nsxManagerSpecs": [
    {
      "name": "vcf9-nsx02",
      "networkDetailsSpec": {
        "dnsName": "vcf9-nsx02.ash.local",
        "gateway": "172.16.11.253",
        "ipAddress": "172.16.11.91",
        "subnetMask": "255.255.255.0"
      }
    },
    {
      "name": "vcf9-nsx03",
      "networkDetailsSpec": {
        "dnsName": "vcf9-nsx03.ash.local",
        "gateway": "172.16.11.253",
        "ipAddress": "172.16.11.92",
        "subnetMask": "255.255.255.0"
      }
    }
  ]
}

Click Execute and The task will show as In Progress

Monitor the Tasks pane

Deployment takes ~20 minutes

Once complete, all NSX Managers are online.

Configure NSX Networking via vCenter

Prior to VCF 9.1, this had to be done in the NSX UI. Now, NSX networking, transit gateways, and connectivity can be configured directly from vCenter.

Reference guide: https://vmanalyst.com/nsx-lab-in-5-minutes-the-lightning-setup-guide/

In vCenter, open Setup Network Connectivity