Hub To Hub Connectivity Cross Two Region

Question

I cant find any MS document on how to implement hub - hub connectivity

Trying to use the hub to hub as a DR path if express route goes down.

I have two region. each region has it own vWAN and hub. I use BGP with express routes in each region.

Is there any document on how to implement this?

Is this a supported design?

https://learn.microsoft.com/en-us/azure/virtual-wan/scenario-bgp-peering-hub

Answer 1

Hello Al Jawad, Ahmed

Unfortunately, this is not a supported scenarios whereas Virtual WAN is designed for VNet-to-VNet and branch-to-VNet traffic, not for ExpressRoute redundancy.

Using inter-hub connectivity for ExpressRoute failover lacks SLA guarantees, introduces routing complexity, and can result in high latency due to traffic across the regions.

NOTE: When virtual hubs are part of the same Azure Virtual WAN. When hubs are under the same virtual WAN, they're interconnected automatically, allowing for hub-to-hub connectivity but when it is in two different region it is not possible.

If you wish, you may also leave your feedback in the below forum requesting this feature. All the feedback you share in these forums will be monitored and reviewed by the Microsoft engineering teams responsible for building Azure.

Feedback link: https://feedback.azure.com/d365community

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I hope this was helpful!

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