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Ive used sonicwalls to create a VPN tunnel with a secondary gateway IP to other sonicwalls and fortinet sand palo altos and it's worked fine with a secondary wan but I think this is a limitation with azure, not IPSec VPN tunnels as a whole.
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@Aaron, its completely an Azure restriction
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I'm trying to configure an Azure Site to Site VPN with redundancy over multiple WAN uplinks.<br />
<br />
However, according to this:<br />
<br />
<a href="https://social.msdn.microsoft.com/Forums/azure/en-US/b64107be-6a74-477f-9ed4-eed0d500b945/sitetosite-vpn-connecting-to-dual-wan-router-failover?forum=WAVirtualMachinesVirtualNetwork" rel="ugc nofollow">https://social.msdn.microsoft.com/Forums/azure/en-US/b64107be-6a74-477f-9ed4-eed0d500b945/sitetosite-vpn-connecting-to-dual-wan-router-failover?forum=WAVirtualMachinesVirtualNetwork</a><br />
<br />
This is not possible. <br />
<br />
I've created a Route-Based VPN in Azure to a Cisco 2911 successfully. I am able to pass traffic, and I can add another S2S VPN to the same Virtual Gateway in Azure, but I cannot reference the same on-premise subnet. According to this azure document its just not possible still:<br />
<br />
<a href="https://azure.microsoft.com/en-us/documentation/articles/vpn-gateway-multi-site/" rel="ugc">https://azure.microsoft.com/en-us/documentation/articles/vpn-gateway-multi-site/</a><br />
<br />
Is there any way to make this work? <br />
<br />
If not will AWS be able to do it? My goal is to provide redundant VPN links to cloud services hosting a backup of our DC/NPS. <br />
<br />
Thanks for any input!
</div>
</div>


I'm trying to configure an Azure Site to Site VPN with redundancy over multiple WAN uplinks.

However, according to this:

https://social.msdn.microsoft.com/Forums/azure/en-US/b64107be-6a74-477f-9ed4-eed0d500b945/sitetosite-vpn-connecting-to-dual-wan-router-failover?forum=WAVirtualMachinesVirtualNetwork

This is not possible. 

I've created a Route-Based VPN in Azure to a Cisco 2911 successfully. I am able to pass traffic, and I can add another S2S VPN to the same Virtual Gateway in Azure, but I cannot reference the same on-premise subnet. According to this azure document its just not possible still:

https://azure.microsoft.com/en-us/documentation/articles/vpn-gateway-multi-site/

Is there any way to make this work? 

If not will AWS be able to do it? My goal is to provide redundant VPN links to cloud services hosting a backup of our DC/NPS. 

Thanks for any input!

Azure Site to Site VPN redundancy over multiple WAN links.

Microsoft Azure is a cloud computing platform and infrastructure for building, deploying and managing applications and services through datacenters. It provides both platform-as-a-service (PaaS) and infrastructure-as-a-service (IaaS) services and supports many different programming languages, tools and frameworks, including both Microsoft-specific and third-party software and systems. Cloud Services is a PaaS environment and can be used to create scalable applications and services; there are specific software development kits (SDKs) provided by Microsoft for Python, Java, Node.js and .NET. Azure also has file and storage services, data management, analytics and DNS services.

Azure

Microsoft 365 Enterprise E5 is the most feature-rich version of Microsoft 365 and consists of Office 365, Windows 10, and Enterprise Mobility + Security (EMS). It provides the collaboration, productivity, automation, and security features an enterprise customer may need to support its digital business transformation initiatives in a single stock keeping unit (SKU),
which streamlines its deployment and utilization. For companies that do not need the full feature set, Microsoft offers different versions, such as the E3 SKU at a lower price point and F1 for firstline workers.

Microsoft 365 Enterprise

Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.

Active Directory

A virtual private network (VPN) is a network that uses a public telecommunication infrastructure, such as the Internet, to provide remote offices or travelling users access to a central organizational network securely. VPNs encapsulate data transfers using secure cryptographic methods and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.

Hardware-based firewalls provide more sophisticated protection for inbound and outbound traffic than the simple Windows software firewall or the basic NAT firewalls found in routers. These devices implement techniques such as stateful packet inspection, deep packet inspection, and content filtering; and may include built-in antivirus and anti-malware protection.