{"id":12500,"date":"2025-11-10T07:55:33","date_gmt":"2025-11-10T15:55:33","guid":{"rendered":"https:\/\/blogs.infoblox.com\/?p=12500"},"modified":"2025-11-10T06:11:55","modified_gmt":"2025-11-10T14:11:55","slug":"delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan","status":"publish","type":"post","link":"https:\/\/www.infoblox.com\/blog\/company\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan\/","title":{"rendered":"Delivering Anycast DNS in Microsoft Azure with Infoblox Universal DDI\u2122 and Virtual WAN"},"content":{"rendered":"<h3>Introduction<\/h3>\n<p>In my previous blog, I walked through how to deploy anycast DNS with Infoblox Universal DDI\u2122 on AWS using Cloud WAN. That design showed how enterprises can build a globally available and resilient DNS fabric by combining centralized Infoblox management with AWS\u2019s global networking backbone. <\/p>\n<p>As promised, in Part Two, we shift focus to Microsoft Azure. Many of the customers I work with operate hybrid or multi-cloud environments, and a common pattern I see is that the same DNS challenges experienced in AWS also appear in Azure. As they scale across multiple Azure regions, the same desires are present: <\/p>\n<ul class=\"list-spacing\">\n<li>Ensuring consistent DNS resolution everywhere<\/li>\n<li>Achieving automated resiliency and failover (i.e., without static routing workarounds)<\/li>\n<li>Keeping the overall design operationally simple and scalable<\/li>\n<\/ul>\n<p>These needs become more pressing as organizations modernize applications and adopt distributed architectures. DNS sits at the core of network functionality, and anycast is a proven way to provide low-latency resolution and high availability globally. <\/p>\n<p>This post covers how to deploy Infoblox NIOS-X and anycast DNS in Azure using Azure Virtual WAN as the backbone. The lab I built mirrors the AWS design but uses Azure\u2019s native Azure Virtual WAN capabilities. This gives us clean multi-region routing, automatic route propagation, and built-in resilience, without additional networking constructs. <\/p>\n<h3>Why Azure Virtual WAN Is Key<\/h3>\n<p>Before diving into the setup, it\u2019s important to highlight why Azure Virtual WAN is the backbone of this architecture. Traditional Azure hub-and-spoke designs rely on manual VNet peering or custom VPN\/ExpressRoute links to interconnect regions. That works, but it quickly becomes complex at scale, especially when anycast routing is involved. Azure Virtual WAN provides a managed, policy-based global transit backbone that simplifies inter-region connectivity, routing, and scale. It eliminates the need for complex manual peering between VNets and hubs, giving enterprises a unified way to route traffic securely and efficiently across Azure regions. Here is a high-level overview of what is involved when configuring a Virtual WAN: <\/p>\n<ul class=\"list-spacing\">\n<li>Deploy a single Azure Virtual WAN as a global construct.<\/li>\n<li>Create regional virtual hubs under that Azure Virtual WAN.<\/li>\n<li>Microsoft automatically connects hubs using its global backbone.<\/li>\n<li>Route propagation between hubs happens natively.<\/li>\n<li>VNets attach to the closest hub, and route tables and labels control propagation in a structured way.<\/li>\n<\/ul>\n<p>This model is ideal for anycast DNS. Each region can advertise the same anycast address through its local hub, and Azure Virtual WAN automatically distributes that route to all other hubs and VNets. No IPsec tunnels, no manual Border Gateway Protocol (BGP) route table updates, no hub peering maintenance. This is exactly the kind of global backbone you want for DNS. <\/p>\n<h3>Lab Topology<\/h3>\n<p>The lab consists of two regions: <\/p>\n<ul class=\"list-spacing\">\n<li>Germany West Central<\/li>\n<li>France Central<\/li>\n<\/ul>\n<p>In each region I deployed: <\/p>\n<ul class=\"list-spacing\">\n<li>A Shared Services VNet hosting two NIOS-X appliances<\/li>\n<li>A spoke VNet with a test virtual machine (VM)<\/li>\n<li>A virtual hub as part of a single global Azure Virtual WAN<\/li>\n<\/ul>\n<p>The Anycast IP is 10.100.100.10\/32. Each pair of NIOS-X appliances advertises this address to its local hub. Because each region advertises the same anycast address, we rely on Azure Virtual WAN\u2019s dynamic routing to ensure that traffic always flows to the closest NIOS-X instance. <\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blogs.infoblox.com\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-1.png\" alt=\"Figure 1. High-level topology across Germany West Central and France Central interconnected by Azure Virtual WAN\" width=\"683\" height=\"687\" class=\"alignnone size-full wp-image-12504\" srcset=\"https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-1.png 683w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-1-298x300.png 298w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-1-150x150.png 150w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-1-75x75.png 75w\" sizes=\"auto, (max-width: 683px) 100vw, 683px\" \/><\/p>\n<p class=\"image-caption\">Figure 1. High-level topology across Germany West Central and France Central interconnected by Azure Virtual WAN<\/p>\n<h3>Deploying Infoblox NIOS-X in Azure<\/h3>\n<p>The foundation of this design is the deployment of Infoblox NIOS-X appliances in Shared Services VNets across multiple Azure regions. These appliances act as the DNS servers for the environment and are centrally managed through the Universal DDI portal. Deployment follows standard Azure VM workflows and uses Infoblox join tokens for seamless registration and management. <\/p>\n<p><strong>Deployment Steps: <\/strong><\/p>\n<ol class=\"list-spacing\">\n<li>Deploy NIOS-X virtual machines in each target region within the Shared Services VNet using the appropriate Azure Marketplace image.<\/li>\n<li>Apply join tokens during initialization to ensure the appliances automatically register with the Universal DDI portal.<\/li>\n<li>Validate onboarding by confirming that the new NIOS-X instances appear under <strong>Configure \u2192 Servers<\/strong> in the Universal DDI portal.<\/li>\n<\/ol>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blogs.infoblox.com\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-2.png\" alt=\"Figure 2. Universal DDI portal showing NIOS-X appliances registered and online (Configure \u2192 Servers)\" width=\"761\" height=\"437\" class=\"alignnone size-full wp-image-12505\" srcset=\"https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-2.png 761w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-2-300x172.png 300w\" sizes=\"auto, (max-width: 761px) 100vw, 761px\" \/><\/p>\n<p class=\"image-caption\">Figure 2. Universal DDI portal showing NIOS-X appliances registered and online (Configure \u2192 Servers)<\/p>\n<p><strong>Why This Matters:<\/strong> This automated onboarding workflow eliminates manual registration steps and ensures new appliances are consistently visible in Universal DDI across regions, reducing deployment time and chances for human error.<\/p>\n<h3>Azure Virtual WAN Hubs, VNet Attachments, and Route Tables<\/h3>\n<p>The backbone is a single Azure Virtual WAN with two hubs, one per region. <\/p>\n<ul class=\"list-spacing\">\n<li>Germany Hub: 10.110.0.0\/22<\/li>\n<li>France Hub: 10.110.4.0\/22<\/li>\n<\/ul>\n<p>Each Shared Services VNet and spoke VNet is attached to the regional hub using Virtual Network Connections. <\/p>\n<p>To keep routing structured, I used two route tables per hub: <\/p>\n<ul class=\"list-spacing\">\n<li>Default Route Table for hub and shared services connections<\/li>\n<li>Custom Spoke Route Table for application VNets<\/li>\n<\/ul>\n<p>This separation gives us greater control over what routes are propagated to workloads and ensures anycast routes are only distributed where needed. Because Azure Virtual WAN automatically syncs hub routes across regions, it is not necessary to configure any manual peering between the German and French hubs. That\u2019s a big operational win compared to traditional designs. <\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blogs.infoblox.com\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-3.png\" alt=\"Figure 3. Azure Virtual WAN overview displaying the two regional hubs deployed under a single Azure Virtual WAN, one in Germany West Central and one in France Central. This global backbone is the foundation for inter-region connectivity and anycast route propagation.\" width=\"899\" height=\"272\" class=\"alignnone size-full wp-image-12506\" srcset=\"https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-3.png 899w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-3-300x91.png 300w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-3-768x232.png 768w\" sizes=\"auto, (max-width: 899px) 100vw, 899px\" \/><\/p>\n<p class=\"image-caption\">Figure 3. Azure Virtual WAN overview displaying the two regional hubs deployed under a single Azure Virtual WAN, one in Germany West Central and one in France Central. This global backbone is the foundation for inter-region connectivity and anycast route propagation.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blogs.infoblox.com\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-4.png\" alt=\"Figure 4. Azure Virtual WAN configuration showing the Virtual Network connections established to the hubs in both Germany West Central and France Central regions. Each region has a Shared Services VNet and a spoke VNet connected to its respective hub.\" width=\"895\" height=\"267\" class=\"alignnone size-full wp-image-12507\" srcset=\"https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-4.png 895w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-4-300x89.png 300w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-4-768x229.png 768w\" sizes=\"auto, (max-width: 895px) 100vw, 895px\" \/><\/p>\n<p class=\"image-caption\">Figure 4. Azure Virtual WAN configuration showing the Virtual Network connections established to the hubs in both Germany West Central and France Central regions. Each region has a Shared Services VNet and a spoke VNet connected to its respective hub.<\/p>\n<h3>BGP Peering with Azure Virtual WAN Hubs<\/h3>\n<p>Azure Virtual WAN hubs have native BGP support. This simplifies the setup significantly. In each hub, I created two eBGP peerings, one for each NIOS-X appliance in the Shared Services VNet. <\/p>\n<p>Example Germany Hub: <\/p>\n<ul class=\"list-spacing\">\n<li>Azure Virtual WAN Hub ASN: 65515, IP: 10.110.0.133 and 10.110.0.134<\/li>\n<li>NIOS-X1 ASN: 64581, IP: 10.104.0.4<\/li>\n<li>NIOS-X2 ASN: 64582, IP: 10.104.1.4<\/li>\n<\/ul>\n<p>Once configured, the hub establishes a BGP session with both appliances. Each NIOS-X appliance advertises the 10.100.100.10\/32 anycast prefix, which appears in the hub\u2019s Effective Route table with the next hop type of HubBGPConnection. Azure Virtual WAN automatically propagates this route to the France hub and to all associated spoke route tables. Spokes use the custom spoke route table, which ensures they receive the anycast address and can resolve DNS using their closest hub. <\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blogs.infoblox.com\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-5.png\" alt=\"Figure 5. BGP Peers view of the Germany West Central virtual hub displaying the two NIOS-X peers configured with unique ASNs. Both peers are in the Provisioned state, indicating that BGP sessions have been established, and anycast routes are being advertised into the hub.\" width=\"964\" height=\"288\" class=\"alignnone size-full wp-image-12508\" srcset=\"https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-5.png 964w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-5-300x90.png 300w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-5-768x229.png 768w\" sizes=\"auto, (max-width: 964px) 100vw, 964px\" \/><\/p>\n<p class=\"image-caption\">Figure 5. BGP Peers view of the Germany West Central virtual hub displaying the two NIOS-X peers configured with unique ASNs. Both peers are in the Provisioned state, indicating that BGP sessions have been established, and anycast routes are being advertised into the hub.<\/p>\n<h3>Configuring Anycast DNS in Infoblox<\/h3>\n<p>With connectivity in place, we enabled anycast DNS in Universal DDI. <\/p>\n<p>These steps must be performed for each NIOS-X appliance in the Infoblox Portal:<\/p>\n<ol class=\"list-spacing\">\n<li>Enable DNS service under <em>Configure \u2192 Service Deployment \u2192 Protocol Service<\/em>.<\/li>\n<li>Create anycast configuration under <em>Configure \u2192 Networking \u2192 Anycast<\/em>.<\/li>\n<li>Create anycast service and associate it with DNS.<\/li>\n<li>Configure BGP peers to advertise the anycast route into Azure Virtual WAN backbone.<\/li>\n<\/ol>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blogs.infoblox.com\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-6.png\" alt=\"Figure 6. Universal DDI Enable DNS service (Configure \u2192 Service Deployment \u2192 Protocol Service \u2192 Create Service \u2192 DNS)\" width=\"965\" height=\"403\" class=\"alignnone size-full wp-image-12509\" srcset=\"https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-6.png 965w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-6-300x125.png 300w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-6-768x321.png 768w\" sizes=\"auto, (max-width: 965px) 100vw, 965px\" \/><\/p>\n<p class=\"image-caption\">Figure 6. Universal DDI Enable DNS service (Configure \u2192 Service Deployment \u2192 Protocol Service \u2192 Create Service \u2192 DNS)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blogs.infoblox.com\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-7.png\" alt=\"Figure 7. Universal DDI anycast configuration (Networking \u2192 Anycast \u2192 Create Anycast Configuration)\" width=\"964\" height=\"401\" class=\"alignnone size-full wp-image-12510\" srcset=\"https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-7.png 964w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-7-300x125.png 300w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-7-768x319.png 768w\" sizes=\"auto, (max-width: 964px) 100vw, 964px\" \/><\/p>\n<p class=\"image-caption\">Figure 7. Universal DDI anycast configuration (Networking \u2192 Anycast \u2192 Create Anycast Configuration)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blogs.infoblox.com\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-8.png\" alt=\"Figure 8. Universal DDI anycast service creation (Configure \u2192 Service Deployment \u2192 Protocol Service \u2192 Create Service \u2192 Anycast)\" width=\"967\" height=\"404\" class=\"alignnone size-full wp-image-12511\" srcset=\"https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-8.png 967w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-8-300x125.png 300w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-8-768x321.png 768w\" sizes=\"auto, (max-width: 967px) 100vw, 967px\" \/><\/p>\n<p class=\"image-caption\">Figure 8. Universal DDI anycast service creation (Configure \u2192 Service Deployment \u2192 Protocol Service \u2192 Create Service \u2192 Anycast)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blogs.infoblox.com\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-9-1.png\" alt=\"\" width=\"968\" height=\"405\" class=\"alignnone size-full wp-image-12512\" srcset=\"https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-9-1.png 968w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-9-1-300x126.png 300w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-9-1-768x321.png 768w\" sizes=\"auto, (max-width: 968px) 100vw, 968px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blogs.infoblox.com\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-9-2.png\" alt=\"Figure 9. Universal DDI BGP peer configuration for anycast service\" width=\"965\" height=\"402\" class=\"alignnone size-full wp-image-12513\" srcset=\"https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-9-2.png 965w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-9-2-300x125.png 300w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-9-2-768x320.png 768w\" sizes=\"auto, (max-width: 965px) 100vw, 965px\" \/><\/p>\n<p class=\"image-caption\">Figure 9. Universal DDI BGP peer configuration for anycast service<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blogs.infoblox.com\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-10.png\" alt=\"Figure 10. Universal DDI anycast IP shows green\/active\" width=\"963\" height=\"323\" class=\"alignnone size-full wp-image-12514\" srcset=\"https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-10.png 963w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-10-300x101.png 300w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-10-768x258.png 768w\" sizes=\"auto, (max-width: 963px) 100vw, 963px\" \/><\/p>\n<p class=\"image-caption\">Figure 10. Universal DDI anycast IP shows green\/active<\/p>\n<h3>Validation<\/h3>\n<p>We validated the end-to-end design across both Azure regions to ensure anycast DNS works seamlessly over Azure Virtual WAN. <\/p>\n<p>Checks performed: <\/p>\n<ul class=\"list-spacing\">\n<li>Routes learned from NIOS-X are visible in the Azure Virtual WAN route tables across regions.<\/li>\n<li>BGP sessions are established between NIOS-X appliances and the virtual hub routers.<\/li>\n<li>The anycast IP 10.100.100.10\/32 is propagated across both regions through Azure Virtual WAN.<\/li>\n<li>DNS queries from spoke VNets successfully resolve via the anycast IP in both regions.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blogs.infoblox.com\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-11.png\" alt=\"Figure 11. Effective routes in Germany West Central hub, spoke route table, showing anycast address 10.100.100.10\/32 learned through BGP\" width=\"965\" height=\"400\" class=\"alignnone size-full wp-image-12515\" srcset=\"https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-11.png 965w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-11-300x124.png 300w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-11-768x318.png 768w\" sizes=\"auto, (max-width: 965px) 100vw, 965px\" \/><\/p>\n<p class=\"image-caption\">Figure 11. Effective routes in Germany West Central hub, spoke route table, showing anycast address 10.100.100.10\/32 learned through BGP<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blogs.infoblox.com\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-12.png\" alt=\"Figure 12. Effective routes in France Central hub, spoke route table, showing anycast address 10.100.100.10\/32 learned through BGP\" width=\"965\" height=\"400\" class=\"alignnone size-full wp-image-12516\" srcset=\"https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-12.png 965w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-12-300x124.png 300w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-12-768x318.png 768w\" sizes=\"auto, (max-width: 965px) 100vw, 965px\" \/><\/p>\n<p class=\"image-caption\">Figure 12. Effective routes in France Central hub, spoke route table, showing anycast address 10.100.100.10\/32 learned through BGP<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blogs.infoblox.com\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-13.png\" alt=\"Figure 13. BGP peering configuration in Germany West Central hub showing NIOS-X appliances peered with the Azure Virtual WAN hub router\" width=\"968\" height=\"256\" class=\"alignnone size-full wp-image-12517\" srcset=\"https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-13.png 968w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-13-300x79.png 300w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-13-768x203.png 768w\" sizes=\"auto, (max-width: 968px) 100vw, 968px\" \/><\/p>\n<p class=\"image-caption\">Figure 13. BGP peering configuration in Germany West Central hub showing NIOS-X appliances peered with the Azure Virtual WAN hub router<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blogs.infoblox.com\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-14.png\" alt=\"Figure 14. BGP peering configuration in France Central hub showing NIOS-X appliances peered with the Azure Virtual WAN hub router\" width=\"970\" height=\"256\" class=\"alignnone size-full wp-image-12518\" srcset=\"https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-14.png 970w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-14-300x79.png 300w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-14-768x203.png 768w\" sizes=\"auto, (max-width: 970px) 100vw, 970px\" \/><\/p>\n<p class=\"image-caption\">Figure 14. BGP peering configuration in France Central hub showing NIOS-X appliances peered with the Azure Virtual WAN hub router<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blogs.infoblox.com\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-15.png\" alt=\"Figure 15. VM in Germany West Central spoke VNet, showing successful ping to anycast IP 10.100.100.10 and DNS resolution via anycast\" width=\"968\" height=\"408\" class=\"alignnone size-full wp-image-12519\" srcset=\"https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-15.png 968w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-15-300x126.png 300w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-15-768x324.png 768w\" sizes=\"auto, (max-width: 968px) 100vw, 968px\" \/><\/p>\n<p class=\"image-caption\">Figure 15. VM in Germany West Central spoke VNet, showing successful ping to anycast IP 10.100.100.10 and DNS resolution via anycast<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blogs.infoblox.com\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-16.png\" alt=\"Figure 16. VM in France Central spoke VNet, showing successful ping to anycast IP 10.100.100.10 and DNS resolution via anycast\" width=\"967\" height=\"352\" class=\"alignnone size-full wp-image-12520\" srcset=\"https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-16.png 967w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-16-300x109.png 300w, https:\/\/www.infoblox.com\/blog\/wp-content\/uploads\/delivering-anycast-dns-in-microsoft-azure-with-infoblox-universal-ddi-and-virtual-wan-fig-16-768x280.png 768w\" sizes=\"auto, (max-width: 967px) 100vw, 967px\" \/><\/p>\n<p class=\"image-caption\">Figure 16. VM in France Central spoke VNet, showing successful ping to anycast IP 10.100.100.10 and DNS resolution via anycast<\/p>\n<p><strong>Why This Matters:<\/strong> This validation confirms that anycast DNS operates seamlessly across regions, with routing handled by Azure Virtual WAN and resiliency provided by BGP. <\/p>\n<h3>Conclusion<\/h3>\n<p>This lab demonstrates how Infoblox Universal DDI and NIOS-X can be deployed in Azure to deliver a resilient anycast-based DNS fabric across multiple regions. By integrating with Azure Virtual WAN, enterprises can leverage a single, policy-driven backbone that makes DNS globally reachable, highly available, and simpler to operate at scale. <\/p>\n<p>The result is more than just improved DNS resolution. It represents a modern, cloud-native network architecture that supports enterprise goals for agility, security, and global reach while preserving the proven design principles of traditional on-premises deployments.<\/p>\n<h3>Lab and Terraform Code<\/h3>\n<p>To help you get started quickly, I\u2019ve published the complete Terraform project that builds the Azure Virtual WAN foundation used in this lab. <\/p>\n<p>The repository includes all configurations required to deploy the multi-region hub-and-spoke topology, Virtual WAN hubs, route tables, and BGP connections. <\/p>\n<p><a href=\"https:\/\/github.com\/afetahi\/Infoblox-UDDI-and-Azure-vWAN-Terraform-Lab\" target=\"_blank\"><strong>GitHub Repository: Infoblox-UDDI-and-Azure-vWAN-Terraform-Lab<\/strong><\/a><\/p>\n<p>After deploying the infrastructure, you can follow the steps outlined in this blog to configure NIOS-X, enable DNS services, assign the anycast IP, and establish BGP sessions with the Azure Virtual WAN hubs. <\/p>\n<p>This allows readers to easily replicate the full lab environment end-to-end and experiment with anycast DNS on Azure in their own subscriptions. <\/p>\n<h3>Disclaimer<\/h3>\n<p>The configurations and architecture demonstrated in this blog are based on lab-validated scenarios. They are intended for testing and educational purposes. Customers should review, test, and adapt configurations based on their own network design, redundancy, and operational requirements. <\/p>\n<style>\n.code-format {\n\tfont-family: 'Courier New';\n}\n.image-caption {\n    font-size: 12px;\n}\n.list-spacing li{margin-bottom:10px}\nol.list-spacing > li::marker {\n    font-weight: 700;\n}\n.entry-content ul.list-spacing ul > li {\n    list-style-type: square;\n}\ntable {\n    font-size: 16px;\n    word-break: keep-all;\n}\n.calloutbox td {\n    padding: 20px;\n    font-size: 18px;\n}\n<\/style>\n<p><script>\njQuery('.single h1').html('Delivering <span class=\"gradient\">Anycast DNS in Microsoft Azure with Infoblox Universal DDI\u2122<\/span> and Virtual WAN');\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Introduction In my previous blog, I walked through how to deploy anycast DNS with Infoblox Universal DDI\u2122 on AWS using Cloud WAN. That design showed how enterprises can build a globally available and resilient DNS fabric by combining centralized Infoblox management with AWS\u2019s global networking backbone. As promised, in Part Two, we shift focus to [&hellip;]<\/p>\n","protected":false},"author":424,"featured_media":12501,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[1],"tags":[1403,1404,1405,1406,1407],"class_list":{"0":"post-12500","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-company","8":"tag-anycast-dns-azure","9":"tag-infoblox-universal-ddi","10":"tag-azure-virtual-wan-anycast","11":"tag-nios-x-azure-deployment","12":"tag-multi-region-dns-architecture-azure","13":"entry"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 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