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articles/virtual-wan/virtual-wan-connectivity.md

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title: Virtual WAN to Virtual WAN connectivity
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description: Learn about the different available options for connecting your Azure Virtual WAN to other Virtual WANs.
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description: Learn about the different available options for connecting your Azure Virtual WAN to another Virtual WAN.
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author: halkazwini
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ms.author: halkazwini
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ms.service: azure-virtual-wan
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## IPsec tunnels using SD-WAN devices in peered spokes
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This option is similar to the previous one, except you place the SD-WAN NVA in a spoke virtual network that is peered to the virtual hub, instead of placing it in the virtual hub. This scenario allows you to configure BGP peering between the SD-WAN NVA and the Route Server inside the virtual hub. This approach is a good for scenarios where users have SD-WAN NVAs that can't be deployed inside virtual hubs, but still support BGP. Like in the second option, you must replace 65520 and 65515 ASNs with the SD-WAN ones to avoid BGP loop prevention.
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This option is similar to the previous one, except you place the SD-WAN NVA in a spoke virtual network that is peered to the virtual hub, rather than placing it in the virtual hub. This scenario allows you to configure BGP peering between the SD-WAN NVA and the virtual hub route server. This approach is suitable for scenarios where users have SD-WAN NVAs that can't be deployed into Virtual WAN hubs, but still support BGP. Like in the second option, you must replace 65520 and 65515 ASNs with the SD-WAN ones to avoid BGP loop prevention.
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:::image type="content" source="./media/virtual-wan-connectivity/vwan-connectivity-using-spoke-sdwan.png" alt-text="Diagram shows virtual WAN connectivity using SD-WAN devices in spoke virtual networks." lightbox="./media/virtual-wan-connectivity/vwan-connectivity-using-spoke-sdwan.png":::
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This option is ideal if you want to connect two virtual WANs using SD-WAN NVAs in the spoke virtual networks because virtual hub doesn't support them. However, this option comes with the following limitations:
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- Complexity to setup and maintain.
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- Complexity to set up and maintain.
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- SD-WAN NVAs can be more expensive than virtual network gateways.

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