Create a hub and spoke topology with Azure Virtual Network Manager (Preview)

In this article, you'll learn how to create a hub and spoke network topology with Azure Virtual Network Manager. With this configuration, you select a virtual network to act as a hub and all spoke virtual networks will have bi-directional peering with only the hub by default. You also can enable direct connectivity between spoke virtual networks and enable the spoke virtual networks to use the virtual network gateway in the hub.

Prerequisites

• Read about Hub-and-spoke network topology.
• Created a Azure Virtual Network Manager instance.
• Identify virtual networks you want to use in the hub-and-spokes configuration or create new virtual networks.

Create a network group

This section will help you create a network group containing the virtual networks you'll be using for the hub-and-spoke network topology.

1. Go to your Azure Virtual Network Manager instance. This how-to guide assumes you've created one using the quickstart guide.

2. Select Network groups under Settings, and then select + Add to create a new network group.

   

3. On the Basics tab, enter a Name and a Description for the network group.

   

4. To add virtual network manually, select the Static group members tab. For more information, see static members.

   

5. To add virtual networks dynamically, select the Conditional statements tab. For more information, see dynamic membership.

   

6. Once you're satisfied with the virtual networks selected for the network group, select Review + create. Then select Create once validation has passed.

Create a hub and spoke connectivity configuration

This section will guide you through how to create a hub-and-spoke configuration with the network group you created in the previous section.

1. Select Configuration under Settings, then select + Add a configuration.

   

2. Select Connectivity from the drop-down menu.

   

3. On the Add a connectivity configuration page, enter, or select the following information:

   

   Setting	Value
   Name	Enter a name for this configuration.
   Description	Optional Enter a description about what this configuration will do.
   Topology	Select the Hub and spoke topology.
   Hub	Select a virtual network that will act as the hub virtual network.
   Existing peerings	Select this checkbox if you want to remove all previously created VNet peering between virtual networks in the network group defined in this configuration.

4. Then select + Add network groups.

5. On the Add network groups page, select the network groups you want to add to this configuration. Then select Add to save.

6. You'll see the following three options appear next to the network group name under Spoke network groups:

   

   • Direct connectivity: Select Enable peering within network group if you want to establish VNet peering between virtual networks in the network group of the same region.
   • Global Mesh: Select Enable mesh connectivity across regions if you want to establish VNet peering for all virtual networks in the network group across regions.
   • Gateway: Select Use hub as a gateway if you have a virtual network gateway in the hub virtual network that you want this network group to use to pass traffic to on-premises.

   Select the settings you want to enable for each network group.

7. Finally, select Add to create the hub-and-spoke connectivity configuration.

Deploy the hub and spoke configuration

To have this configuration take effect in your environment, you'll need to deploy the configuration to the regions where your selected virtual network are created.

1. Select Deployments under Settings, then select Deploy a configuration.

2. On the Deploy a configuration select the following settings:

   

   Setting	Value
   Configuration type	Select Connectivity.
   Configurations	Select the name of the configuration you created in the previous section.
   Target regions	Select all the regions that apply to virtual networks you select for the configuration.

3. Select Deploy and then select OK to commit the configuration to the selected regions.

4. The deployment of the configuration can take up to 15-20 minutes, select the Refresh button to check on the status of the deployment.

Confirm deployment

1. See view applied configuration.

2. To test direct connectivity between spokes, deploy a virtual machine into each spokes virtual network. Then initiate an ICMP request from one virtual machine to the other.

Next steps

• Learn about Security admin rules
• Learn how to block network traffic with a SecurityAdmin configuration.