Use an Azure CLI sample script to connect two virtual networks

This script creates and connects two virtual networks in the same region through the Azure network. After running the script, you will create a peering between two virtual networks.

To run this sample, install the latest version of the Azure CLI. To start, run az login to create a connection with Azure.

Samples for the Azure CLI are written for the bash shell. To run this sample in Windows PowerShell or Command Prompt, you may need to change elements of the script.

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

Sample script

#!/bin/bash
# Passed validation in Cloud Shell 02/03/2022

# <FullScript>
# Peer two virtual networks

# Variable block
let "randomIdentifier=$RANDOM*$RANDOM"
location="East US"
resourceGroup="msdocs-virtual-network-rg-$randomIdentifier"
tag="peer-two-virtual-networks"
vNet1="msdocs-vNet-$randomIdentifier"
addressPrefixVNet1="10.0.0.0/16"
vNet2="msdocs-vNet2-$randomIdentifier"
addressPrefixVNet2="10.1.0.0/16"

echo "Using resource group $resourceGroup with login: $login"

# Create a resource group
echo "Creating $resourceGroup in $location..."
az group create --name $resourceGroup --location "$location" --tags $tag

# Create virtual network 1.
echo "Creating $vNet1"
az network vnet create --name $vNet1 --resource-group $resourceGroup --location "$location" --address-prefix $addressPrefixVNet1

# Create virtual network 2.
echo "Creating $vNet2"
az network vnet create --name $vNet2 --resource-group $resourceGroup --location "$location" --address-prefix $addressPrefixVNet2

# Get the id for VNet1.
echo "Getting the id for $vNet1"
VNet1Id=$(az network vnet show --resource-group $resourceGroup --name $vNet1 --query id --out tsv)

# Get the id for VNet2.
echo "Getting the id for $vNet2"
VNet2Id=$(az network vnet show --resource-group $resourceGroup --name $vNet2 --query id --out tsv)

# Peer VNet1 to VNet2.
echo "Peering $vNet1 to $vNet2"
az network vnet peering create --name "Link"$vNet1"To"$vNet2 --resource-group $resourceGroup --vnet-name $vNet1 --remote-vnet $VNet2Id --allow-vnet-access

# Peer VNet2 to VNet1.
echo "Peering $vNet2 to $vNet1"
az network vnet peering create --name "Link"$vNet2"To"$vNet1 --resource-group $resourceGroup --vnet-name $vNet2 --remote-vnet $VNet1Id --allow-vnet-access
# </FullScript>

# echo "Deleting all resources"
# az group delete --name $resourceGroup -y

Clean up deployment

Run the following command to remove the resource group, VM, and all related resources.

az group delete --name myResourceGroup --yes

Script explanation

This script uses the following commands to create a resource group, virtual machine, and all related resources. Each command in the table links to command specific documentation.

Command Notes
az group create Creates a resource group in which all resources are stored.
az network vnet create Creates an Azure virtual network and subnet.
az network vnet peering create Creates a peering between two virtual networks.
az group delete Deletes a resource group including all nested resources.

Next steps

For more information on the Azure CLI, see Azure CLI documentation.

Additional networking CLI script samples can be found in the Azure Networking Overview documentation.