Merge pull request #311251 from mattmcinnes/accelnet-updates-from-310850

[MANA] Accelnet updates merge

Author: v-regandowner

articles/virtual-network/accelerated-networking-how-it-works.md

@@ -246,6 +246,10 @@ Disabling Accelerated Networking that's enabled in the guest VM produces a `dmes
 
 You can use these Azure CLI commands to simulate Azure host servicing. You can then verify that your applications don't incorrectly depend on direct interaction with the VF interface.
 
+> [!NOTE]
+> Disabling Accelerated Networking on VM sizes where Accelerated Networking is listed as 'required' does not have any effect. These sizes will receive the VF interface regardless of the state of Accelerated Networking associated with the virtual NIC. 
+
+
 ## Next steps
 
 * Learn how to [create a VM with Accelerated Networking in PowerShell](../virtual-network/create-vm-accelerated-networking-powershell.md).

articles/virtual-network/accelerated-networking-mana-existing-sizes.md

@@ -0,0 +1,69 @@
+---
+title: Microsoft Azure Network Adapter (MANA) support for existing VM Sizes
+description: Update for Microsoft Azure Network Adapter (MANA) support for existing VM Sizes
+author: alisheriffMSFT
+ms.service: azure-virtual-network
+ms.topic: how-to # Need to determine what is the right value
+ms.date: 02/02/2026
+ms.author: mattmcinnes
+# Customer intent: As a cloud administrator, I want to learn about Microsoft Azure Network Adapter, Accelerated Networking and how these work with non-V6 VM Sizes on Intel.
+---
+
+# MANA support for existing VM sizes
+
+The following content is for customers of existing VM Sizes and using Accelerated Networking. To learn more about Accelerated Networking and the Networking performance benefits it provides, check out the [Accelerated Networking Overview](https://aka.ms/accelnet).
+
+Per the [announcement](https://aka.ms/announcemanasupportforexistingvms), General Purpose Compute VMs can be deployed on compute hardware equipped with the [Microsoft Azure Network Adapter](/azure/virtual-network/accelerated-networking-mana-overview). The Microsoft Azure Network Adapter (MANA) was introduced in February 2025 with the Intel v6 family of sizes as part of Azure Boost. MANA is an Azure optimized, performance focused, Accelerated Networking device that is an integral part of the newest Azure Boost offerings.
+
+For optimal Accelerated Networking performance, the Virtual Machine (VM) should use an operating system that fully supports NVIDIA `ConnectX-3`, `ConnectX-4 Lx`, `ConnectX-5`, **and** `MANA`.
+
+When a VM using an operating system that doesn't support MANA is deployed on MANA hardware, it falls back to the NetVSC network adapter. In this scenario, the MANA Virtual Function (VF) will be visible, but no network interfaces are exposed by the MANA driver. Accelerated Networking performance for a VM falling back to the NetVSC network adapter is expected to be close to SR-IOV/VF mode NVIDIA `ConnectX-3`, `ConnectX-4 Lx`, `ConnectX-5`. A high number of concurrent connections can cause performance degradation.
+
+While Microsoft has performed extensive testing across a wide range of use cases, there remains a possibility that virtual machines may experience intermittent connectivity or degraded performance.  
+
+For best performance and overall experience, it's recommended that customers migrate to the latest generation of VMs. At a minimum, ensure your operating systems fully support MANA. 
+
+## FAQ
+
+### My workload doesn’t use Accelerated Networking. Can I expect any changes?
+No. If your workload doesn’t support Accelerated Networking today, there's no impact or change to your workload. However, for the best performance, the recommendation is to use Accelerated Networking. [Accelerated Networking Overview](https://aka.ms/accelnet) has more information about Accelerated Networking.
+
+### What VM sizes are impacted by this change?
+Dsv5, Dv5, Ddsv5, Ddv5, Dlsv5, Dldsv5, Esv5, Ev5, Edsv5, Edv5, Ebsv5, Ebdsv5, Dsv4, Dv4, Ddsv4, Ddv4, Esv4, Ev4, Edsv4, Edv4, Dsv3, Dv3, Esv3, Ev3, Bsv2, Dv2, Dsv2, Av2, Fsv2, Fs, F, G, GS, Ls 
+
+Note that some of these VM sizes will soon be retired. It's highly recommended that customers utilize the latest generations of Azure VMs for improved performance, functionality, and resiliency. 
+
+### Will existing VMs deployed on MANA hardware?
+VMs already deployed will be eligible to land on MANA capable hardware following a "stop-deallocate and start" command, or through a redeploy operation. All new VMs in the series listed above are eligible to be deployed on MANA capable hardware as well. 
+
+### How will I know if my VM is deployed on MANA capable hardware? 
+
+To determine if your VM Guest Operating System supports MANA, follow the instructions described in [Linux VMs with the Microsoft Azure Network Adapter](/azure/virtual-network/accelerated-networking-mana-linux). You'll see a PCIe device in the virtual machine and on the bonded NIC.
+
+### What will be the performance implications for Accelerated Networking enabled VMs? 
+If the VM’s underlying operating system supports all network devices used in Azure, there's no expected change in performance. This is because networking limits are associated with the VM Size as opposed to the underlying hosting infrastructure.  
+
+If the VM’s underlying operating system isn't fully compatible with MANA, it will fall back to the NetVSC network adapter. In this scenario, due to advancements in host infrastructure technology, the Accelerated Networking performance is expected to be comparable to NVIDIA ConnectX-3, ConnectX-4 Lx, ConnectX-5.  
+
+>[!Note] 
+>While Azure has performed extensive testing across a wide range of use cases, there remains a rare possibility that virtual machines may experience intermittent connectivity or degraded performance. In such an instance, it is highly recommended to migrate to the latest generation of VMs or at a minimum, utilize operating systems that fully support MANA. You should see a PCIe device in the virtual machine as well as the bonded NIC.
+
+### I use a DPDK-based application that doesn't yet support MANA, will there be any impact to my workload? 
+Yes. We recommend that you update your DPDK-based applications to support MANA. Information on DPDK with MANA can be found in [Microsoft Azure Network Adapter (MANA) and DPDK on Linux](/azure/virtual-network/setup-dpdk-mana).
+
+### What are the minimum requirements to support MANA and DPDK? 
+Visit [Microsoft Azure Network Adapter (MANA) and DPDK on Linux](/azure/virtual-network/setup-dpdk-mana) for the minimum requirements to support MANA and DPDK. 
+
+### Are Network Virtual Appliances (NVAs) impacted by this change? 
+NVAs based on the VM Sizes listed above may also be deployed on MANA capable hardware starting in March 2026. Visit [NVA Support insert link to NVA doc page][def] for more information about MANA support for NVAs. 
+
+### Where can I find more information about MANA? 
+To learn more about MANA, visit [Microsoft Azure Network Adapter](/azure/virtual-network/accelerated-networking-mana-overview). On this page you can learn more about operating system support for MANA, installing MANA device drivers (Windows), and more information about MANA capabilities.  
+
+### What should I do if I have issues? 
+We’re here to help. Contact Microsoft Support, who can assist with troubleshooting, guidance, and next steps. You can open a support request through the Azure portal by selecting Help + support, or visit the Microsoft Support site to start a new case. A support engineer reviews your request, engage internal teams as needed, and keep you updated until the issue is resolved. 
+
+## Related content
+
+- [Accelerated Networking Overview](https://aka.ms/accelnet)
+- [How Accelerated Networking works in Linux and FreeBSD VMs](/azure/virtual-network/accelerated-networking-how-it-works)

articles/virtual-network/accelerated-networking-mana-linux.md

@@ -5,7 +5,7 @@ author: mattmcinnes
 ms.service: azure-virtual-network
 ms.custom: linux-related-content
 ms.topic: how-to
-ms.date: 07/10/2023
+ms.date: 02/02/2026
 ms.author: mattmcinnes
 # Customer intent: As a Linux VM administrator, I want to implement the Microsoft Azure Network Adapter, so that I can enhance the networking performance and availability of my virtual machines in Azure.
 ---
@@ -22,22 +22,7 @@ For more info about MANA, see [Microsoft Azure Network Adapter overview](./accel
 
 Several Linux images from [Azure Marketplace](/marketplace/azure-marketplace-overview) have built-in support for the Ethernet driver in MANA:
 
-- Ubuntu 22.04 LTS
-- Ubuntu 24.04 LTS
-- Red Hat Enterprise Linux 8.8
-- Red Hat Enterprise Linux 8.10
-- Red Hat Enterprise Linux 9.2
-- Red Hat Enterprise Linux 9.4
-- Red Hat Enterprise Linux 9.6
-
-- SUSE Linux Enterprise Server 15 SP4
-- Rocky Linux (CIQ) 8.10 (all variants)
-
-- Rocky Linux (CIQ) 9.2+ (all variants)
-
-- Debian 12 "Bookworm"
-- Oracle Linux 8.0 UEK R7
-- Oracle Linux 9.0 UEK R7
+Operating system support details are listed at [Azure Accelerated Networking Overview](accelerated-networking-overview.md).
 
 > [!NOTE]
 > Newer MANA features are under active development and Linux distribution vendors partner with Microsoft to update their kernels with upstream changes. Cadence of updates varies by distribution vendor. The newer your distribution and kernel is, the more likely it is to have the latest updates. 
@@ -62,6 +47,7 @@ When you enable Accelerated Networking, you can identify the underlying MANA NIC
 $ lspci
 7870:00:00.0 Ethernet controller: Microsoft Corporation Device 00ba
 ```
+If you see another Ethernet controller device, you will not be using MANA. In [later steps](#verify-that-traffic-is-flowing-through-mana) you should also confirm that the MANA interface is initialized and bonded correctly. 
 
 ### Kernel version check
 
@@ -75,7 +61,7 @@ kernel/drivers/net/ethernet/microsoft/mana/mana.ko
 
 ## Update the kernel
 
-Ethernet drivers for MANA are included in kernel version 5.15 and later. Kernel version 6.2 includes Linux support for features such as InfiniBand/RDMA and DPDK. Earlier or forked kernel versions (5.15 and 6.1) require backported support.
+Ethernet drivers for MANA are included in kernel version 5.15 and later. Kernel version 6.2 includes Linux support for features such as InfiniBand/RDMA and DPDK. Earlier or forked kernel versions (5.15 and 6.1) require backported support. Operating system support details are listed at [Azure Accelerated Networking Overview](accelerated-networking-overview.md).
 
 To update your VM's Linux kernel, check the documentation for your specific distribution.
 
@@ -105,6 +91,7 @@ $ ethtool -S eth0 | grep -E "^[ \t]+vf"
      vf_tx_bytes: 76231291
      vf_tx_dropped: 0
 ```
+If the values associated with the VF are 0 or do not increment, you are not using the virtual function.
 
 ## Next steps
 

articles/virtual-network/accelerated-networking-mana-overview.md

@@ -19,27 +19,7 @@ MANA supports several VM operating systems. Although your VM might be running a
 
 MANA maintains feature parity with previous Azure networking features. VMs run on hardware with both Mellanox and MANA NICs, so existing `mlx4` and `mlx5` support still needs to be present.
 
-### Supported Azure Marketplace images
-
-Several [Azure Marketplace](/marketplace/azure-marketplace-overview) images have built-in support for the Ethernet driver in MANA. 
-
-#### Linux
-
-- Ubuntu 22.04 LTS (with linux-azure kernel >= 6.8.0-1033)
-- Ubuntu 24.04 LTS
-- SUSE Linux Enterprise Server 15 SP5 and above
-- Debian 12 "Bookworm"
-- Debian 13 "Trixie"
-- Oracle Linux 9.0 UEK R8
-
-> [!NOTE]
-> Newer MANA features are under active development and Linux distribution vendors partner with Microsoft to update their kernels with upstream changes. Cadence of updates varies by distribution vendor. The newer your distribution and kernel is, the more likely it is to have the latest updates. 
-
-#### Windows
-
-- Windows Server 2019
-- Windows Server 2022
-- Windows Server 2025
+For operating system support see [Azure Accelerated Networking Overview](accelerated-networking-overview.md).
 
 ### Custom images and legacy VMs
 

articles/virtual-network/accelerated-networking-mana-windows.md

@@ -17,16 +17,12 @@ For Linux support, see [Linux VMs with the Microsoft Azure Network Adapter](./ac
 
 For more info about MANA, see [Microsoft Azure Network Adapter overview](./accelerated-networking-mana-overview.md).
 
-> [!IMPORTANT]
-> MANA is currently in preview. For legal terms that apply to Azure features that are in beta, in preview, or otherwise not yet released into general availability, see the [Supplemental Terms of Use for Microsoft Azure Previews](https://azure.microsoft.com/support/legal/preview-supplemental-terms/).
-
 ## Supported Azure Marketplace images
 
-The following Windows images from [Azure Marketplace](/marketplace/azure-marketplace-overview) have built-in support for the Ethernet driver in MANA:
+Several Windows images from [Azure Marketplace](/marketplace/azure-marketplace-overview) have built-in support for the Ethernet driver in MANA:
+
+Operating system support details are listed at [Azure Accelerated Networking Overview](accelerated-networking-overview.md).
 
-- Windows Server 2016
-- Windows Server 2019
-- Windows Server 2022
 
 ## Check the status of MANA support
 
@@ -62,6 +58,17 @@ Ethernet                  Microsoft Hyper-V Network Adapter            13 Up
 Ethernet 3                Microsoft Azure Network Adapter #2            8 Up           00-0D-3A-AA-00-AA       200 Gbps
 ```
 
+If you do not see the "Microsoft Azure Network Adapter" listed, either your VM has landed on hardware with a different network interface or your operating system does not support MANA. You can check that the MANA device is present using the following command.
+
+```powershell
+PS C:\Users\testVM> Get-PnpDevice -PresentOnly | Where-Object { $_.InstanceId -match '^PCI\\VEN_1414&DEV_00BA&' }
+
+Status     Class           FriendlyName                                                                     InstanceId
+------     -----           ------------                                                                     ----------
+OK         MultiFunction   Microsoft Azure Network Adapter Virtual Bus                                      PCI\VEN_1414...
+```
+If the output is missing or blank, your VM has landed on hardware with a different network adapter. If you see the output above from ```Get-PnpDevice``` but not from ```Get-NetAdapter```, you are missing MANA driver support in your operating system.  
+
 #### Device Manager
 
 1. Open Device Manager.
@@ -84,6 +91,7 @@ Name                             ReceivedBytes ReceivedUnicastPackets       Sent
 ----                             ------------- ----------------------       --------- ------------------
 Ethernet 5                       1230513627217            22739256679 ...724576506362       381331993845
 ```
+If the values associated with MANA are 0 or do not increment, you are not using the virtual function. 
 
 ## Next steps