An SDDC group uses VMware Managed Transit Gateway (VTGW) to provide high-bandwidth, low-latency connections between SDDCs in the group and to other VPCs in the same region. You can also add a Direct Connect Gateway (DXGW) to provide centralized connectivity to your on-premises SDDCs.

An SDDC group is a logical entity designed to simplify management of your organization's VMware Cloud on AWS resources at scale. Collecting SDDCs into an SDDC group provides a number of benefits to an organization with multiple SDDCs whose workloads need a high-bandwidth, low-latency connection to each other. All network traffic between group members travels over a VTGW network. Routing between compute networks of all SDDCs in a group is managed automatically by VTGW as subnets are added and deleted.

The data source requirements to support VMware Transit Connect are:

Data Source Entites Permissions
VMC NSX SDDC group, VTGW, SDDC attachments, VTGW route table, and VTGW routes Administator
AWS account with native VPCs AWS TGW attachment EC2 API permissions
AWS account with DXGW DXGW and DXGW associations EC2 API permissions and Direct Connect permissions
VTGW support in vRealize Network Insight includes:
  • VMC SDDC Group as a search query to view the SDDC group details in the VMC SDDC Group page.
  • VMware Transit Gateway as a search query to the view the VTGW details in the VMware Transit Gateway page.
  • Search and view details of the related entities like VTGW routes, route tables, and VTGW attachments.
  • Flows for:
    • SDDC to SDDC via VTGW.
    • SDDC to native AWS VPC via VTGW.
VTGW support in vRealize Network Insight does not include:
  • Flows between VMC SDDC and on-premise SDDC via VTGW and Direct Connect Gateway.
  • VM-VM path visualization between VMs communicating over VTGW.
  • Native AWS Transit Gateway.