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    Network setup - Hyper-V

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    • CCWTechC
      CCWTech
      last edited by

      0_1513971948316_Capture.JPG

      I have 2 Intel GB NIC's Teamed together for 2 GB. I have a Hyper-V network adapter that is used for 2 VM's. VM1 - DC/DNS/DHCP, VM2-Application server

      I have some thin clients and they RDS into the apps server as well as some traditional desktops that just run the application (a veterinary software that is a flat file database) over the network.

      I have set this up 30-40 times before but only 1 other time using teaming.

      The application is fast on the RDS session but very slow over the network. The previous server (a 10 year old server that was entry level) was running faster than the new server that has 64 GB Ram, 10K RPM Drives in RAID 10 when running over the network.

      Am I not setting this up correctly?

      1 Reply Last reply Reply Quote 1
      • scottalanmillerS
        scottalanmiller
        last edited by

        If you remove the team, does it improve?

        1 Reply Last reply Reply Quote 0
        • CCWTechC
          CCWTech
          last edited by

          Going to try that this weekend, but wanted to have a game plan 1st.

          1 Reply Last reply Reply Quote 0
          • black3dynamiteB
            black3dynamite
            last edited by

            Sounds like a VMQ issue.
            https://support.microsoft.com/en-us/help/2902166/poor-network-performance-on-virtual-machines-on-a-windows-server-2012

            1 Reply Last reply Reply Quote 1
            • CCWTechC
              CCWTech
              last edited by

              This is Server 2016 and Intel... I hadn't heard of anything but broadcom with the vmq issue.

              black3dynamiteB 1 Reply Last reply Reply Quote 0
              • black3dynamiteB
                black3dynamite @CCWTech
                last edited by

                @ccwtech said in Network setup - Hyper-V:

                This is Server 2016 and Intel... I hadn't heard of anything but broadcom with the vmq issue.

                It still can happen on Intel or Server 2016. Have you also installed the latest LAN drivers too?

                CCWTechC 1 Reply Last reply Reply Quote 0
                • CCWTechC
                  CCWTech @black3dynamite
                  last edited by

                  @black3dynamite

                  Yes, LAN drivers are up to date. I'll try the VMQ and also unteaming.

                  Nothing looks glaringly wrong?

                  1 Reply Last reply Reply Quote 0
                  • ObsolesceO
                    Obsolesce
                    last edited by Obsolesce

                    That VMQ thing can be an issue on 1 GB NICs with out-dated firmware/drivers. The info of affected drivers and NICs and the resolution can be found here:

                    https://support.microsoft.com/en-us/help/2986895/virtual-machines-lose-network-connectivity-when-you-use-broadcom-netxt

                    This is a good write-up and how to resolve it. Or you can just run firmware and driver updates.

                    VMQ should be disabled on 1 GB NICs. The issue with the broadcoms is that it's enabled by default, and shouldn't be.

                    1 Reply Last reply Reply Quote 5
                    • JaredBuschJ
                      JaredBusch
                      last edited by

                      The implementation of VMQ was rolled out so badly.

                      I ranted on it in a thread more than a year ago.
                      https://mangolassi.it/topic/8358/i-hate-vmq

                      You can disable it on the NICs quite easily.

                      Get-NetAdapterVmq | Disable-NetAdapterVmq
                      
                      dafyreD 1 Reply Last reply Reply Quote 3
                      • JaredBuschJ
                        JaredBusch
                        last edited by

                        Even if you disable it on the NIC, you may/will still need to disable it on the VM.

                        1 Reply Last reply Reply Quote 3
                        • CCWTechC
                          CCWTech
                          last edited by

                          I have unteamed, and disabled VMQ on the Hyper-V settings. I haven't disabled it on the NIC yet. No change so far.

                          I assume the powershell command will take them offline for a moment... Do I need to have the VM's shut down first before running it?

                          1 Reply Last reply Reply Quote 0
                          • ObsolesceO
                            Obsolesce
                            last edited by

                            HyperV VMQ setting doesn't matter with 1g NICs.

                            dbeatoD JaredBuschJ 2 Replies Last reply Reply Quote 0
                            • dbeatoD
                              dbeato @Obsolesce
                              last edited by

                              @tim_g said in Network setup - Hyper-V:

                              HyperV VMQ setting doesn't matter with 1g NICs.

                              It has mattered with 1 Gbps NICs just more with Broadcom devices.

                              ObsolesceO 1 Reply Last reply Reply Quote 0
                              • JaredBuschJ
                                JaredBusch @Obsolesce
                                last edited by

                                @tim_g said in Network setup - Hyper-V:

                                HyperV VMQ setting doesn't matter with 1g NICs.

                                This is provably false. You have said it repeatedly.

                                Yet I have posted clear proof in the previously linked thread.

                                ObsolesceO 1 Reply Last reply Reply Quote 0
                                • ObsolesceO
                                  Obsolesce @dbeato
                                  last edited by

                                  @dbeato said in Network setup - Hyper-V:

                                  @tim_g said in Network setup - Hyper-V:

                                  HyperV VMQ setting doesn't matter with 1g NICs.

                                  It has mattered with 1 Gbps NICs just more with Broadcom devices.

                                  No, what matters is the NIC setting, not the HyperV setting.

                                  1 Reply Last reply Reply Quote 0
                                  • ObsolesceO
                                    Obsolesce @JaredBusch
                                    last edited by

                                    @jaredbusch said in Network setup - Hyper-V:

                                    @tim_g said in Network setup - Hyper-V:

                                    HyperV VMQ setting doesn't matter with 1g NICs.

                                    This is provably false. You have said it repeatedly.

                                    Yet I have posted clear proof in the previously linked thread.

                                    I know for a fact it doesn't matter with 1G NICs.

                                    You are talking about the setting in the NIC properties. I'm not. I'm talking about the setting in the HyperV VM Settings.

                                    dbeatoD 1 Reply Last reply Reply Quote 0
                                    • dbeatoD
                                      dbeato @Obsolesce
                                      last edited by

                                      @tim_g said in Network setup - Hyper-V:

                                      @jaredbusch said in Network setup - Hyper-V:

                                      @tim_g said in Network setup - Hyper-V:

                                      HyperV VMQ setting doesn't matter with 1g NICs.

                                      This is provably false. You have said it repeatedly.

                                      Yet I have posted clear proof in the previously linked thread.

                                      I know for a fact it doesn't matter with 1G NICs.

                                      You are talking about the setting in the NIC properties. I'm not. I'm talking about the setting in the HyperV VM Settings.

                                      That's different.

                                      1 Reply Last reply Reply Quote 0
                                      • CCWTechC
                                        CCWTech
                                        last edited by

                                        Even if it doesn't matter. I have run the powershell command and it's still running slow. Any other ideas?

                                        black3dynamiteB 1 Reply Last reply Reply Quote 0
                                        • black3dynamiteB
                                          black3dynamite @CCWTech
                                          last edited by

                                          @ccwtech said in Network setup - Hyper-V:

                                          Even if it doesn't matter. I have run the powershell command and it's still running slow. Any other ideas?

                                          Is it slow accessing the application via IP and DNS?

                                          1 Reply Last reply Reply Quote 0
                                          • CCWTechC
                                            CCWTech
                                            last edited by

                                            The way the app is installed is that essentially all the server is doing is hosting a file share. You place a shortcut to the .exe file on the desktop.

                                            black3dynamiteB matteo nunziatiM 2 Replies Last reply Reply Quote 0
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