Configure routing preference for a public IP address

This article shows you how to configure routing preference via ISP network (Internet option) for a public IP address using the Azure portal, Azure PowerShell, or Azure CLI. After creating the public IP address, you can associate it with the following Azure resources for inbound and outbound traffic to the internet:

• Virtual machine
• Virtual machine scale set
• Azure Kubernetes Service (AKS)
• Internet-facing load balancer
• Application Gateway
• Azure Firewall

By default, the routing preference for public IP address is set to the Microsoft global network for all Azure services and can be associated with any Azure service.

Prerequisites

Azure portal

If you don't have an Azure subscription, create an Azure free account before you begin.

Azure CLI

If you don't have an Azure subscription, create an Azure free account before you begin.

• Use the Bash environment in Azure Cloud Shell. For more information, see Quickstart for Bash in Azure Cloud Shell.

  

• If you prefer to run CLI reference commands locally, install the Azure CLI. If you're running on Windows or macOS, consider running Azure CLI in a Docker container. For more information, see How to run the Azure CLI in a Docker container.

  • If you're using a local installation, sign in to the Azure CLI by using the az login command. To finish the authentication process, follow the steps displayed in your terminal. For other sign-in options, see Sign in with the Azure CLI.

  • When you're prompted, install the Azure CLI extension on first use. For more information about extensions, see Use extensions with the Azure CLI.

  • Run az version to find the version and dependent libraries that are installed. To upgrade to the latest version, run az upgrade.

• This article requires version 2.0.49 or later of the Azure CLI. If using Azure Cloud Shell, the latest version is already installed.

Azure PowerShell

If you don't have an Azure subscription, create an Azure free account before you begin.

Azure Cloud Shell

Azure hosts Azure Cloud Shell, an interactive shell environment that you can use through your browser. You can use either Bash or PowerShell with Cloud Shell to work with Azure services. You can use the Cloud Shell preinstalled commands to run the code in this article, without having to install anything on your local environment.

To start Azure Cloud Shell:

Option	Example/Link
Select Try It in the upper-right corner of a code or command block. Selecting Try It doesn't automatically copy the code or command to Cloud Shell.
Go to https://shell.azure.com, or select the Launch Cloud Shell button to open Cloud Shell in your browser.
Select the Cloud Shell button on the menu bar at the upper right in the Azure portal.

To use Azure Cloud Shell:

1. Start Cloud Shell.

2. Select the Copy button on a code block (or command block) to copy the code or command.

3. Paste the code or command into the Cloud Shell session by selecting Ctrl+Shift+V on Windows and Linux, or by selecting Cmd+Shift+V on macOS.

4. Select Enter to run the code or command.

If you choose to install and use PowerShell locally, this article requires the Azure PowerShell module version 6.9.0 or later. Run Get-Module -ListAvailable Az to find the installed version. If you need to upgrade, see Install Azure PowerShell module. If you are running PowerShell locally, you also need to run Connect-AzAccount to create a connection with Azure.

Create a public IP address with a routing preference

Azure portal

1. Sign in to the Azure portal.

2. Select Create a resource.

3. In the search box, type Public IP address.

4. In the search results, select Public IP address. Next, in the Public IP address page, select Create.

5. In the Create public IP address page, enter or select this information:

   Setting	Value
   Project details
   Subscription	Select your subscription.
   Resource group	Select Create new, enter RoutingPreferenceResourceGroup, then select OK.
   Instance details
   Region	Select East US.
   Configuration details
   Name	Enter a name for the public IP address.
   IP version	Select IPv4.
   SKU	Select Standard.
   Tier	Select Regional.
   Availability zone	Select Zone-redundant.
   IP address assignment	Select Static.
   Routing preference	Select Internet.
   DNS name label	Enter a DNS name label if desired.

6. Select Create.

   Note

   Public IP addresses are created with an IPv4 or IPv6 address. However, routing preference only supports IPV4 currently.

You can associate the above created public IP address with a Windows or Linux virtual machine. Use the CLI section on the tutorial page: Associate a public IP address to a virtual machine to associate the public IP to your VM. You can also associate the public IP address created above with an Azure Load Balancer, by assigning it to the load balancer frontend configuration. The public IP address serves as a load-balanced virtual IP address (VIP).

Azure CLI

Create a resource group with the az group create command. The following example creates a resource group in the East US Azure region:

  az group create --name myResourceGroup --location eastus

Create a public IP address

Create a Public IP Address with routing preference of Internet type using command az network public-ip create, with the format as shown below.

The following command creates a new public IP with Internet routing preference in the East US Azure region.

az network public-ip create \
--name MyRoutingPrefIP \
--resource-group MyResourceGroup \
--location eastus \
--ip-tags 'RoutingPreference=Internet' \
--sku STANDARD \
--allocation-method static \
--version IPv4

Note

Currently, routing preference only supports IPV4 public IP addresses.

You can associate the above created public IP address with a Windows or Linux virtual machine. Use the CLI section on the tutorial page: Associate a public IP address to a virtual machine to associate the Public IP to your VM. You can also associate the public IP address created above with an Azure Load Balancer, by assigning it to the load balancer frontend configuration. The public IP address serves as a load-balanced virtual IP address (VIP).

Azure PowerShell

The following command creates a new public IP with a routing preference type as Internet in the East US Azure region:

$iptagtype="RoutingPreference"
$tagName = "Internet"
$ipTag = New-AzPublicIpTag -IpTagType $iptagtype -Tag $tagName 
# attach the tag
$publicIp = New-AzPublicIpAddress  `
-Name "MyPublicIP" `
-ResourceGroupName $rg.ResourceGroupName `
-Location $rg.Location `
-IpTag $ipTag `
-AllocationMethod Static `
-Sku Standard `
-IpAddressVersion IPv4

You can associate the above created public IP address with a Windows or Linux virtual machine. Use the CLI section on the tutorial page: Associate a public IP address to a virtual machine to associate the Public IP to your VM. You can also associate the public IP address created above with an Azure Load Balancer, by assigning it to the load balancer frontend configuration. The public IP address serves as a load-balanced virtual IP address (VIP).

Next steps

Configure routing preference for a virtual machine