Add Subnet to a Virtual Network using Azure Management Portal

What is a Subnet?

Subnets are nothing but a segmentation of a Virtual Network. You can have multiple Subnets in an Azure VNet. Below is a diagram of a Virtual network with two subnets, one for Front End Servers (FrontEnd-SNet) and the other for Back End Servers (BackEnd-SNet).

In one of my previous articles Create Virtual Network (VNet) using Azure Management Portal, I created an Azure VNet called CoreLan with a default subnet also called CoreLan. Inside this Azure VNet we can create additional subnets as long as they fall within the IP range of the Azure VNet.

How to Create a Subnet

Log in to your Azure Subscription by going to https://portal.azure.com

Navigate to your VNet.
For this article I have gone to Resource Groups picked the Resource Group that my VNet is in. 

Click your Virtual Network and then click Subnets

Click on the black +Subnet button

Enter a Name and Address range in CIDR and then click OK

You have now created a new Subnet in your Azure VNet

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