Step-By-Step Demo Of Creating A VNet To VNet Connection In Microsoft Azure

In this article, I am going to show you how to create a VNet to VNet connection using Virtual Network Gateways.

VNet to VNet connection can be established between two Virtual Networks lying in different regions. Let us go ahead with the demo.
 
Step 1

Create two different resource groups in two different locations.
 
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Azure
 
Step 2

Create two virtual networks, one in each of the resource group.
 
 
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Azure
 
Step 3

Create Gateway
subnets for VNetSouth. Click on Gateway Subnet and keep everything as default and click on OK. 
 
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Step 4

Similarly, create a gateway subnet for 
VNetWest. 
 
Step 5

Create Virtual Network Gateway in the West India region for the West India
VNet. 
 
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Azure
 
Step 6

Similarly, create a Virtual Network Gateway for the South India
VNet in the South India Region. 
 
Step 7

Now, in order to establish a connection between two Virtual Networks, we need to establish a connection between the two gateways.
 
Step 8

Go to
VNetGateway South and click on the connections tab. Click on Add to add a connection. 
 
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Step 9

Give a name. Give the connection type. First
VNet gateway will be fixed; i.e., the South one. The second gateway will be the West one. Give a shared key. And click on OK. 
 
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Step 10

Now, it has been created but it shows the status as unknown because we have not established a connection from the other gateway.
 
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Step 11

Similarly, add a new connection to the other gateway as well.
 
 
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Step 12

Here, you can see that in both the gateways’ connection blade, we can see that the connections are succeeded. However, when you open the connection tab, it might take some time to refresh the status.
 
 
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Azure
 
Step 13

To look into how the traffic is going on between the two virtual networks, we need to set up two virtual machines, one in each of the virtual network.
 
Step 14

First, create a Windows Server 2012 R2 Datacentre VM in South India under its respective Resource Group. Rest everything keeps default according to the necessities.
 
 
Azure
Azure
 
Step 15

Similarly, create one more VM in West India region for its respective resource group.
 
 
Step 16

Once they are created, connect to both of them via the public IP 
i.e., through the RDP connection.
 
Step 17

Once they get connected, go to any of one of the VM and open the command prompt there. Then try pinging the other VM through it.
 
 
Step 18

Right now I am in my
SouthVM and I ran the command ipconfig at its command prompt. I got the IPv4 address as 11.11.0.4 
 
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Step 19

Now, from my
WestVM if I try to ping my SouthVM through the IP address, the request will get timed out. So for that, we need to turn off the firewall in the SouthVM. 
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Step 20

Inside the 
SouthVM, turn off the firewall options. 
 
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Step 21

Now, if we go and ping the 
SouthVM from the WestVM, it will reply perfectly. 
 
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Step 22

Similarly, you can turn off the firewall from the 
WestVM and ping it from the SouthVM as well and it will work fine. 
 
Step 23

We can also go to the portal and see the VM overview to view the traffic exchanged from the VM.
 
 
Step 24

So, it can be concluded that both the VMs are connected; i.e., at the back, both the virtual networks are connected and the data traffic channel is working.