Azure Vnet peering

Question

Difference between Azure Vnet peering's using the VPN gateway and Virtual Wan. Which one is the most preferred one

Answer 1

Hi,

VNET peering - It is used to connect 2 Virtual Network and VMs in each Virtual Network can communicate with each other. It is the most cost effective way of connecting 2 VNETs.

vWAN- You will need to create a vWAN HUB and then connect the VNETs as spoke and then you can communicate between each VNETs via HUB. This comes with the cost of the vHUB that you deploy. This is scalable as lets say you want to connect your On-Premises to Azure or centrally monitor the traffic between each VNETs, this is an option that you can pick.

VPN gateway - You will need to create 2 VPN gateways, one in each VNET then form an IPSEC tunnel between them. Then you can connect those 2 VNETs, where you will need to pay for the VPN gateway per hour basis.

It totally depends on your infrastructure.

Regards,

Karthik Srinivas

Answer 2

Hello @Anonymous

Thanks for posting your question on this community.

Azure VNet peering will be used to connect two Azure virtual networks (VNets) together, allowing communication between virtual machines in the connected VNets. And whereas Azure Virtual WAN provides large-scale site-to-site connectivity and is built for throughput, scalability, and ease of use. When you connect a site to a Virtual WAN VPN gateway, it's different from a regular virtual network gateway that uses a gateway type 'site-to-site VPN.

So, when it comes to preferred one, the choice between VNet peering using a VPN gateway and vWAN depends on your organization's specific needs and requirements and the decision should be based on the organization's network architecture and security requirements. VNet peering using a VPN gateway may be preferred for scenarios where secure communication is required between two VNets, but there is no need for a centralized hub for managing the network traffic.

Microsoft Documentations on this with FAQs:

https://learn.microsoft.com/en-us/azure/virtual-wan/virtual-wan-about

https://learn.microsoft.com/en-us/azure/virtual-wan/virtual-wan-faq

Hope this helps, please feel free to respond to this if any questions or concerns.

Thankyou.