Azure VMware Solution networking and interconnectivity concepts

Azure VMware Solution offers a private cloud environment accessible from on-premises and Azure-based environments or resources. Services such as Azure ExpressRoute and VPN connections deliver the connectivity. These services require specific network address ranges and firewall ports for enabling the services.

When deploying a private cloud, private networks for management, provisioning, and vMotion get created. Use these private networks to access vCenter and NSX-T Manager and virtual machine vMotion or deployment. ExpressRoute Global Reach is used to connect private clouds to on-premises environments. The connection requires a virtual network with an ExpressRoute circuit in your subscription.

Resources, such as web servers and virtual machines, are accessible to the internet through the Azure Virtual WAN public IP functionality. By default, internet access is disabled for new private clouds. For more information, see How to use the public IP functionality in Azure VMware Solution.

A useful perspective on interconnectivity is to consider the two types of Azure VMware Solution private cloud implementations:

  1. Basic Azure-only interconnectivity lets you manage and use your private cloud with only a single virtual network in Azure. This implementation is best suited for Azure VMware Solution evaluations or implementations that don't require access from on-premises environments.

  2. Full on-premises to private cloud interconnectivity extends the basic Azure-only implementation to include interconnectivity between on-premises and Azure VMware Solution private clouds.

In this article, we'll cover a few key concepts that establish networking and interconnectivity, including requirements and limitations. We’ll also cover more information the two types of Azure VMware Solution private cloud interconnectivity implementations. This article provides you with the information you need to know to configure your networking to work with Azure VMware Solution properly.

Azure VMware Solution private cloud use cases

The use cases for Azure VMware Solution private clouds include:

  • New VMware VM workloads in the cloud
  • VM workload bursting to the cloud (on-premises to Azure VMware Solution only)
  • VM workload migration to the cloud (on-premises to Azure VMware Solution only)
  • Disaster recovery (Azure VMware Solution to Azure VMware Solution or on-premises to Azure VMware Solution)
  • Consumption of Azure services

Tip

All use cases for the Azure VMware Solution service are enabled with on-premises to private cloud connectivity.

Azure virtual network interconnectivity

In the virtual network to private cloud implementation, you can manage your Azure VMware Solution private cloud, consume workloads in your private cloud, and access Azure services over the ExpressRoute connection.

The diagram below shows the basic network interconnectivity established at the time of a private cloud deployment. It shows the logical, ExpressRoute-based networking between a virtual network in Azure and a private cloud. The interconnectivity fulfills three of the primary use cases:

  • Inbound access to vCenter server and NSX-T manager that is accessible from VMs in your Azure subscription and not from your on-premises systems.
  • Outbound access from VMs to Azure services.
  • Inbound access and consumption of workloads running a private cloud.

Basic virtual network to private cloud connectivity

On-premises interconnectivity

In the virtual network and on-premises to full private cloud implementation, you can access your Azure VMware Solution private clouds from on-premises environments. This implementation is an extension of the basic implementation described in the previous section. Like the basic implementation, an ExpressRoute circuit is required, but with this implementation, it’s used to connect from on-premises environments to your private cloud in Azure.

The diagram below shows the on-premises to private cloud interconnectivity, which enables the following use cases:

  • Hot/Cold Cross-vCenter vMotion
  • On-Premises to Azure VMware Solution private cloud management access

Virtual network and on-premises full private cloud connectivity

For full interconnectivity to your private cloud, enable ExpressRoute Global Reach and then request an authorization key and private peering ID for Global Reach in the Azure portal. The authorization key and peering ID are used to establish Global Reach between an ExpressRoute circuit in your subscription and the ExpressRoute circuit for your new private cloud. Once linked, the two ExpressRoute circuits route network traffic between your on-premises environments to your private cloud. See the tutorial for creating an ExpressRoute Global Reach peering to a private cloud for the procedures to request and use the authorization key and peering ID.

Next steps

Learn about private cloud storage concepts.