Creating an Azure Virtual Network with Four Subnets (192.148.30.0/26)

A virtual network (VNet) in Azure acts as the foundation for your private cloud environment. It defines a secure communication space for your Azure resources, including virtual machines (VMs). This blog will guide you through creating a VNet with four subnets using the address space 192.148.30.0/26.

Prerequisites:

• An Azure account with an active subscription

Steps

1.Access the Azure Portal:

Log in to the Azure portal https://azure.microsoft.com/en-us/get-started/azure-portal using your Azure account credentials.

2. Create a Virtual Network:

• In the Azure portal search bar, type “Virtual Network” and select the service from the results.

• Click on the “+ Create” button.

3. Configure Virtual Network Settings:

• Provide a unique name for your VNet (e.g., “MyVNet”).
• Select the appropriate subscription that you want to use for this virtual network.
• Choose a resource group or create a new one to organize your Azure resources.
• Select the appropriate location for your VNet deployment.
• Click on the IP Address on your top left options

4. Define the IP Address Space:

• For the “Address space” field, enter “192.148.30.0/26” as the address space for the virtual network.
• A /26 subnet mask provides 64 usable IP addresses within the VNet.
• Leave the other settings at their default values and click on the “Next: Subnets” button.
  

5. Create and Configure the Subnets:

• Click on “+ Subnet” to add a new subnet.

• Provide a name for your subnet (e.g., “Subnet1”).

• Define the subnet address range. In this step, you’ll divide the /26 VNet address space (192.148.30.0/26) into four subnets. To achieve this, you’ll use a /28 subnet mask. This configuration provides 16 usable IP addresses per subnet, offering a balanced approach for your four-subnet virtual network.

• Subnet 1:

1. Name: Subnet 1
2. Subnet address range: 192.148.30.0/28
3. Click “Add”.

1.Name: Subnet 2
2.Subnet address range: 192.148.30.16/28

1. Click “Add”

1.Name: Subnet 3
2.Subnet address range: 192.148.30.32/28
3.Click “Add”

1. Name: Subnet 4
2. Subnet address range: 192.148.30.48/28
3. Click ” Add”

6. Review and create the virtual network

1. Review the configuration details of your VNet and subnets to ensure they are correct.
2. Once satisfied, click on the “Review + create” button to validate the settings.
3. After validation is successful, click on the “Create” button to deploy your virtual network with the four subnets

Excellent work! You’ve meticulously divided your Azure virtual network’s /26 address space (192.148.30.0/26) into four efficiently sized subnets, providing a solid foundation for deploying your resources.