Networking

The Networking forum covers all aspects of Networking in Azure, including endpoints, load-balancing, network security, DNS, Traffic Manager, virtual networks, and external connectivity.

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  • If you have any feedback on any aspect of Azure relating to Networking, we’d love to hear it.

    How can we improve Azure Networking?

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    • My feedback
    1. change virtual machine virtual network through portal

      Today, I needed to change a virtual network to a existing Virtual Machine. I had to delete this VM, create a new one using attached disks from the old one and set the Virtual Network. It would be nice if we had another way to do that, using Portal for example.

      455 votes
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        planned  ·  12 comments  ·  Virtual Networks (VNET)  ·  Flag idea as inappropriate…  ·  Admin →
      • Allow DNS servers to be advertised per subnet instead of VNET

        Instead of advertising the DNS servers per VNET, is there anyway we can specify what DNS servers should be advertised per subnet? In most cases, I would create a VNET and use NSGs to segregate out my traffic.

        The problem with specifying the DNS servers for the whole VNET, is now I am required to create a completely separate VNET for a DMZ, as my internal DNS servers are being advertised to those machines. In this case, being able to specify DNS servers at a subnet level will allow more flexibility in regards to creating one VNET instead of multiple…

        179 votes
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          6 comments  ·  Virtual Networks (VNET)  ·  Flag idea as inappropriate…  ·  Admin →
        • Support for gateway diagnostics in ARM

          The only way to get diagnostics logs from a VNet gateway is via ASM cmdlets. CSP subscriptions do not offer any support for ASM, so troubleshooting is impossible. Please add native support in ARM for retrieving logs from a VNet gateway

          108 votes
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            4 comments  ·  Virtual Networks (VNET)  ·  Flag idea as inappropriate…  ·  Admin →

            Thank you for your suggestion. We currently have something in the Portal called “Resource Health Check” under “Support + Troubleshooting” within your Gateway. It will check the health of your Gateway and try to determine the cause of an unhealthy Gateway. We understand how important this is, and are working on further improvements to monitoring and diagnostics.

            Thanks,
            Bridget [MSFT]

          • Want that VNet Peering can be created in another Directory

            Currently, VNet Peering between the different subscription there is a description that can be created. However, I checked , there was a need to be a separate subscription in the same directory.

            The scene in which Vnet Peering is utilized, the situation is considered overwhelming majority (such as the merger of the company, and integration of the system, etc for connection between VNet and VNet).

            64 votes
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              3 comments  ·  Virtual Networks (VNET)  ·  Flag idea as inappropriate…  ·  Admin →
            • Allow Agent IP in UDR when using Forced Tunnel

              You can not add a UDR for the VM Agent IP when employing Forced Tunneling. This makes deployments fail (e.g. VMSS).

              Please allow UDR to the special VM Agent IP of 168.63.129.16

              Full error message:
              Failed to add route 'DirectRouteToVMAgent' to route table 'VmAgentIp'.

              Error: AddressPrefix 168.63.129.16/32 for route DirectRouteToVMAgent is not allowed because its in restricted address space.

              44 votes
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                under review  ·  3 comments  ·  Virtual Networks (VNET)  ·  Flag idea as inappropriate…  ·  Admin →
              • Multiple Network Security Groups per subnet

                Provide ability to associate multiple Network Security Groups with a single subnet. Right now there is limitation to associate only one NSG per subnet.

                This limits reusability of NSGs which are created at subscription level. We have come across use-cases where multiple subnets have common rules and few subnet-specific rules.

                It will be help a lot in terms of rules management and reusability if it is possible to segregate common rules across subnets in an NSG which can them be applied on a subnet with additional NSGs for subnet specific rules.

                36 votes
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                  0 comments  ·  Virtual Networks (VNET)  ·  Flag idea as inappropriate…  ·  Admin →
                • Azure Internal Endpoints to Vnet

                  Please provide Azure Services with an Internal Endpoint (a least Azure Storage and Azure Backup) to build up machines without Internet Connection.

                  32 votes
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                    2 comments  ·  Virtual Networks (VNET)  ·  Flag idea as inappropriate…  ·  Admin →

                    Anitha Adusumilli [MSFT]

                    Thanks for the feedback, This is on our roadmap for second half of this year- We are looking at providing connectivity via NSGs, to Azure Storage\SQL, without no internet outbound (we are not looking into mapping internal endpoints per-se)

                  • Allow transit routing between ExpressRoute, VPN Gateways, and NVAs by allowing them to peer with BGP and exchange routes.

                    Allow transit routing between ExpressRoute Gateways, VPN Gateways, and NVAs by allowing them to peer with BGP and exchange routes. This functionality would give the customer more flexibility in how they lay out their network.

                    28 votes
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                      1 comment  ·  Virtual Networks (VNET)  ·  Flag idea as inappropriate…  ·  Admin →
                    • Want that VNet Peering can be created another Region in same Gio

                      Currently, although it is possible to create a Peering between VNet within the same region, the same thing can be carried out also in the address space and subnets in VNet.

                      When VNet Peering can be created another Region in Same Gio that becomes available, I believe that the network design and expansion becomes easy.

                      I kindly ask for your consideration.

                      25 votes
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                        3 comments  ·  Virtual Networks (VNET)  ·  Flag idea as inappropriate…  ·  Admin →
                      • Support VNET re-deployment without destroying subnets

                        When you deploy a VNET from an ARM template in incremental mode I would expect omitting the subnet property would not change the subnets since they are child resources. Instead they are destroyed. I think this is inconsistent with all other similar resource types e.g. app service plans and web apps, azure SQL servers and databases, etc... Please make VNETs and subnets deployments consistent.

                        https://github.com/Azure/azure-quickstart-templates/issues/2786

                        24 votes
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                          under review  ·  0 comments  ·  Virtual Networks (VNET)  ·  Flag idea as inappropriate…  ·  Admin →
                        • Enable a VM to move between cloud service and VMNet AFTER VM creation

                          At present, if you create a VM and THEN want to put it into a vmnet, you must destroy the VM then recreate it (keeping the same disk). This is quite wasteful and slow. Please provide the feature to 'move' a vm between a cloud service and a vmnet with minimal downtime.

                          23 votes
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                            0 comments  ·  Virtual Networks (VNET)  ·  Flag idea as inappropriate…  ·  Admin →
                          • Offer NAT as a Service

                            There is often the need to connect two or more networks with overlapping addresses over a VPN in regulated industries. The address spaces (often 10.0.0.0/8) can't be changed, however a DMZ subnet can be introduced in each network from the 172.16.0.0/12 address space. The DMZ subnets will not overlap between any network.

                            Just like the load balancer, make a NAT device a first class function citizen in virtual networking and allow us to define SNAT, DNAT or Full NAT. Feel free to require a dedicated subnet for the device.

                            Then make it easier for custom route rules to route traffic…

                            22 votes
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                              2 comments  ·  Virtual Networks (VNET)  ·  Flag idea as inappropriate…  ·  Admin →
                            • subnet expansion

                              It would be nice if you could expand a subnet without having to remove all of the cloud services and VMs from the subnet. In our case we will have to destroy all of our subnets to expand one subnet. This is very inconvenient (yes we opened a support ticket).

                              Additionally, make the tool available that the internal Microsoft support people use that creates a nice table of the various components of the subscription (I don't need to know datacenter, node, cluster). I've only seen snippets of the tables, but they are better than what I am getting from either…

                              17 votes
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                                1 comment  ·  Virtual Networks (VNET)  ·  Flag idea as inappropriate…  ·  Admin →
                              • Allow a VM's NIC to use a VNET\Subnet from another Subscription

                                Given that the syntax of json deployment templates allows referencing resources by a unique resourceid which includes the guid of the subscription, I would like to create a VM in subscription 'A', whose NIC references a subnet that is part of a VNET in subscription 'B'.

                                The reason for this is two-fold:
                                1) This would allow a corporate networking function to securely manage all the networking infrastructure in a corporate IT-owned and managed subscription, but allow it to be consumed by line-of-business units, whose subscriptions are restricted (via ARM policies) to not allow the creation of VNETs.
                                2) This would…

                                13 votes
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                                  under review  ·  1 comment  ·  Virtual Networks (VNET)  ·  Flag idea as inappropriate…  ·  Admin →
                                • Decouple vNIC count from VM Size

                                  For people wanting to use Virtual Firewall Appliances, the amount of vNICs a Virtual Server type offers is the key consideration for how many backend subnets one can place behind the firewall.
                                  The existing Azure practice of scaling of a VM type/size to get additional vNICs is therefore problematic for the following reasons.

                                  1. We have to oversize our VM to get the amount of vNICs required. We pay for more CPU and RAM resources than we actually require.

                                  2. Firewall vendors often license the appliances based on CPU Count. Because we had to oversize our VM, we now have…

                                  12 votes
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                                    1 comment  ·  Virtual Networks (VNET)  ·  Flag idea as inappropriate…  ·  Admin →
                                  • Specify internal IP address during creating VM on Azure Portal

                                    We cannot specify internal IP address during creating VM on Azure Portal, so it's required to specify IP address after VM creation. We want to specify internal IP address during creating VM on Azure Portal.

                                    10 votes
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                                      0 comments  ·  Virtual Networks (VNET)  ·  Flag idea as inappropriate…  ·  Admin →
                                    • Allow "Port Preservation" instead Source NAT on outbound comunications

                                      Source ports are translated on outbound communications beyond public IP (SNAT).
                                      Implement some outbound port configuration and allow Port Preservation.
                                      If port collision is a major concern, allow this configuration only on not balanced ports to avoid collision behaviour

                                      9 votes
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                                        4 comments  ·  Virtual Networks (VNET)  ·  Flag idea as inappropriate…  ·  Admin →
                                      • Ability to move a NIC from one VNET to another.

                                        Could we get the ability to detach a NIC from it's current VNET and reattach it to a different VNET? In my case, I accidentally created a new VNET instead of attaching it to a pre-existing one, and it would be more convenient to move it over instead of recreating the NIC.

                                        8 votes
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                                          under review  ·  0 comments  ·  Virtual Networks (VNET)  ·  Flag idea as inappropriate…  ·  Admin →
                                        • Control Whether Secondary NICs get Gateway & DNS settings from DHCP.

                                          Generally we do not want 2 gateways on a server. Allow us to control whether secondary NICs receive Gateway and DNS settings. Generally all we really want is an IP address and Subnet Mask on a secondary NIC for communication on a Private Network within the same subnet.

                                          6 votes
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                                            0 comments  ·  Virtual Networks (VNET)  ·  Flag idea as inappropriate…  ·  Admin →

                                            Thanks for the feedback. We are planning to change the configuration to only send the default gateway on the primary NIC. There is currently no timeframe estimate as the change will take some time to deploy globally. We will provide an update once it happens.

                                            Thanks,
                                            Yushun [MSFT]

                                          • time protocol

                                            Network Time - Precision Time Protocol (IEEE 1588 std) support

                                            Azure should provide a know reference service for a network time protocol such as NTP or preferably for the IEEE 1588 standard Precision Time Protocol, or provide this as an option with the Blockchain service.

                                            6 votes
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                                              under review  ·  0 comments  ·  Virtual Networks (VNET)  ·  Flag idea as inappropriate…  ·  Admin →
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