Azure VPN Gateway

Question

Azure VPN Gateway

Himanshu Dobriyal 40

Hello Azure experts, Based on simulation, it shows that during VPN gateway creation, portal allows to create the Gateway subnet however i am getting the below error. What i did after this error that i created the Gateway subnet first and then it allows me to create the VPN gateway.

Please advise if this is something with my test subscription or there is update in the portal which is not reflecting in simulation.

This question is related to the following Learning Module

VarunTha 14,850 Reputation points Microsoft External Staff Moderator

2024-11-04T22:41:26.81+00:00

Hi Himanshu Dobriyal,
Thank you for reaching out to us on the Microsoft Q&A forum.

We are looking into the issue, and we will get back to you soon.
Himanshu Dobriyal 40 Reputation points

2024-11-05T22:03:07.91+00:00
Thanks for the reply.

No Gateway VPN for that particular VNET.

Understood that Gateway need a separate subnet that called Gateway subnet.

I have 3 VNET and trying to create test gateway in 2 vnet so don't think it hit the limit

I did to avoid this error and create gateway, First create Gateway Subnet, then vpn gateway.

My question is whether its for me only or we can not define gateway subnet while creating VPN gateway.
RDash 2,495 Reputation points Microsoft External Staff

2024-11-07T08:07:08.7+00:00

Hi Himanshu Dobriyal,

We understand your concern,and We’d be happy to clarify. In Azure, the Gateway Subnet must be created before you can deploy a VPN gateway. Unfortunately, the Gateway Subnet cannot be defined during the VPN gateway creation process itself. This is a necessary step in the setup, as the VPN gateway requires an existing Gateway Subnet in order to be provisioned.

The error message "No Gateway VPN for that particular VNET" you're seeing is likely due to the Gateway Subnet not being created in advance. Here’s how you can resolve it:

1.Manually create the Gateway Subnet in the VNet where you wish to deploy the VPN gateway. Please make sure the subnet is named "GatewaySubnet".

2.Once the Gateway Subnet is successfully created, you should be able to proceed with creating and deploying the VPN gateway.

If you continue to experience issues, please double-check that the Gateway Subnet exists and is properly configured in each of the VNets where you’re trying to deploy the VPN gateway.

We hope this clears things up for you!If so, please accept the answer by clicking the Accept Answer / Upvote on the post. We value your feedback, and it will help to assist others who might have a similar query. Thank you for your contribution in enhancing Microsoft Q&A! If you need further assistance or have any other questions, feel free to reach out anytime. We are happy to assist you.

1 answer

Your answer

VarunTha 14,850 Reputation points Microsoft External Staff Moderator

2024-11-04T22:41:26.81+00:00

Hi Himanshu Dobriyal,
Thank you for reaching out to us on the Microsoft Q&A forum.

We are looking into the issue, and we will get back to you soon.
Himanshu Dobriyal 40 Reputation points

2024-11-05T22:03:07.91+00:00

Thanks for the reply.

No Gateway VPN for that particular VNET.

Understood that Gateway need a separate subnet that called Gateway subnet.

I have 3 VNET and trying to create test gateway in 2 vnet so don't think it hit the limit

I did to avoid this error and create gateway, First create Gateway Subnet, then vpn gateway.

My question is whether its for me only or we can not define gateway subnet while creating VPN gateway.
RDash 2,495 Reputation points Microsoft External Staff

2024-11-07T08:07:08.7+00:00

Hi Himanshu Dobriyal,

We understand your concern,and We’d be happy to clarify. In Azure, the Gateway Subnet must be created before you can deploy a VPN gateway. Unfortunately, the Gateway Subnet cannot be defined during the VPN gateway creation process itself. This is a necessary step in the setup, as the VPN gateway requires an existing Gateway Subnet in order to be provisioned.

The error message "No Gateway VPN for that particular VNET" you're seeing is likely due to the Gateway Subnet not being created in advance. Here’s how you can resolve it:

1.Manually create the Gateway Subnet in the VNet where you wish to deploy the VPN gateway. Please make sure the subnet is named "GatewaySubnet".

2.Once the Gateway Subnet is successfully created, you should be able to proceed with creating and deploying the VPN gateway.

If you continue to experience issues, please double-check that the Gateway Subnet exists and is properly configured in each of the VNets where you’re trying to deploy the VPN gateway.

We hope this clears things up for you!If so, please accept the answer by clicking the Accept Answer / Upvote on the post. We value your feedback, and it will help to assist others who might have a similar query. Thank you for your contribution in enhancing Microsoft Q&A! If you need further assistance or have any other questions, feel free to reach out anytime. We are happy to assist you.

Answer 1

Hi Himanshu Dobriyal,

We understand that the error message you're encountering when trying to create an Azure VPN Gateway indicates a conflict with existing gateways in your virtual network. Specifically, it suggests that a gateway of the same type already exists / that the current gateway does not support coexistence.

Here are some troubleshooting steps to resolve the issue:

1.Make sure there aren’t any existing VPN gateways in your virtual network. Azure only allows one VPN gateway of each type (Policy-based / Route-based) per virtual network. You can check this in the Azure Portal under the "Virtual Network" section.

2.The Azure VPN Gateway needs a special Gateway Subnet. If you tried to set up the VPN Gateway without making this subnet first, that could cause the error you're seeing. It's best to create the Gateway Subnet manually before you set up the VPN Gateway. Just make sure to name the subnet "GatewaySubnet."

3.If you think the problem might be due to your test subscription, try these steps:

-> Check the limits on your subscription, like how many resources you can have. -> Make sure you haven’t hit your limit for VPN gateways.

4.Recommendations:-> First, create the Gateway Subnet. - >Delete any existing gateways that you don’t need anymore. - >If the issue continues, try setting up the resources in another test environment.

For more detailed guidance, you can refer to the Azure documentation on creating a VPN Gateway, which will provide the latest best practices and requirements: https://learn.microsoft.com/en-us/azure/vpn-gateway/tutorial-create-gateway-portal

If you still facing the issue, please don't hesitate to reach out to us if you have any further queries.
I hope the information provided has been helpful to you! If so, please accept the answer by clicking the Accept Answer / Upvote on the post. We value your feedback, and it will help to assist others who might have a similar query. Thank you for your contribution in enhancing Microsoft Q&A!

Himanshu Dobriyal 40 Reputation points

2024-11-07T15:44:27.8566667+00:00

Thanks. Then MS has to update the simulation. First i followed the steps that explained in simulation and after that error i create the Gateway subnet before VPN gateway creation and it worked.

Thanks for clarifying
RDash 2,495 Reputation points Microsoft External Staff

2024-11-08T07:08:03.7266667+00:00

Hi Himanshu Dobriyal,

We're so glad to hear that your issue has been resolved. Should you have any additional questions in the future, please feel free to contact us, we’re always happy to help.

If you found the solution helpful, please consider accepting the answer and upvoting the post.

Thank you.

Share via

Azure VPN Gateway

1 answer

Your answer