hyper-v bad physical NIC? - vswitch or NIC teaming?
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Other troubleshooting that I did was cranked up iperf and ran a few GB through it. It didn't drop a beat.
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@mike-davis said in hyper-v bad physical NIC? - vswitch or NIC teaming?:
@black3dynamite said in hyper-v bad physical NIC? - vswitch or NIC teaming?:
Is the NIC drivers up to date?
First thing I did was update the firmware for everything and all the drivers.
Its possible Virtual Machine Queue (VMQ) could be causing the issue. Intel or Broadcom?
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The only other thing I can think of is disabling the power management settings on the NIC, but I'm pretty sure I did that with the:
Disable-NetAdapterPowerManagement -Name Ethernet
command. The command
Get-NetAdapterPowerManagement -Name Ethernet
doesn't seem to show if it has been enabled or disabled, only the Wake on LAN. Does anyone know if there is another command to check the current status? -
@mike-davis said in hyper-v bad physical NIC? - vswitch or NIC teaming?:
The only other thing I can think of is disabling the power management settings on the NIC, but I'm pretty sure I did that with the:
Disable-NetAdapterPowerManagement -Name Ethernet
command. The command
Get-NetAdapterPowerManagement -Name Ethernet
doesn't seem to show if it has been enabled or disabled, only the Wake on LAN. Does anyone know if there is another command to check the current status?PS C:\Windows\system32> powercfg /list Existing Power Schemes (* Active) ----------------------------------- Power Scheme GUID: 381b4222-f694-41f0-9685-ff5bb260df2e (Balanced) Power Scheme GUID: 8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c (High performance) * Power Scheme GUID: a1841308-3541-4fab-bc81-f71556f20b4a (Power saver) -
@black3dynamite said in hyper-v bad physical NIC? - vswitch or NIC teaming?:
Its possible Virtual Machine Queue (VMQ) could be causing the issue. Intel or Broadcom?
I'm not sure. I'll have to be onsite to find out. What are the symptoms of that? Would VMQ knock the host offline as well?
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@black3dynamite said in hyper-v bad physical NIC? - vswitch or NIC teaming?:
@mike-davis said in hyper-v bad physical NIC? - vswitch or NIC teaming?:
The only other thing I can think of is disabling the power management settings on the NIC, but I'm pretty sure I did that with the:
Disable-NetAdapterPowerManagement -Name Ethernet
command. The command
Get-NetAdapterPowerManagement -Name Ethernet
doesn't seem to show if it has been enabled or disabled, only the Wake on LAN. Does anyone know if there is another command to check the current status?PS C:\Windows\system32> powercfg /list Existing Power Schemes (* Active) ----------------------------------- Power Scheme GUID: 381b4222-f694-41f0-9685-ff5bb260df2e (Balanced) Power Scheme GUID: 8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c (High performance) * Power Scheme GUID: a1841308-3541-4fab-bc81-f71556f20b4a (Power saver)That command may work for some stuff on the host, but I tested it on another server and it doesn't change the power settings for the individual NICs. cool command though.
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@mike-davis said in hyper-v bad physical NIC? - vswitch or NIC teaming?:
@black3dynamite said in hyper-v bad physical NIC? - vswitch or NIC teaming?:
@mike-davis said in hyper-v bad physical NIC? - vswitch or NIC teaming?:
The only other thing I can think of is disabling the power management settings on the NIC, but I'm pretty sure I did that with the:
Disable-NetAdapterPowerManagement -Name Ethernet
command. The command
Get-NetAdapterPowerManagement -Name Ethernet
doesn't seem to show if it has been enabled or disabled, only the Wake on LAN. Does anyone know if there is another command to check the current status?PS C:\Windows\system32> powercfg /list Existing Power Schemes (* Active) ----------------------------------- Power Scheme GUID: 381b4222-f694-41f0-9685-ff5bb260df2e (Balanced) Power Scheme GUID: 8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c (High performance) * Power Scheme GUID: a1841308-3541-4fab-bc81-f71556f20b4a (Power saver)That command may work for some stuff on the host, but I tested it on another server and it doesn't change the power settings for the individual NICs. cool command though.
Which power scheme is active? I've always make sure mine is set to High performance.
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@mike-davis said in hyper-v bad physical NIC? - vswitch or NIC teaming?:
@black3dynamite said in hyper-v bad physical NIC? - vswitch or NIC teaming?:
Its possible Virtual Machine Queue (VMQ) could be causing the issue. Intel or Broadcom?
I'm not sure. I'll have to be onsite to find out. What are the symptoms of that? Would VMQ knock the host offline as well?
Yes. This is a well known issue in an older firmware of some 1gig nics, such as broadcoms. Updating the firmware resolves the issue, or turning off VMQ, which you can do via powershell on Hyper-V Server 2016.
VMQ is meant for 10gig+ NICs, but the firmware is messed up and has it on by default on some 1gig nics.
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@black3dynamite said in hyper-v bad physical NIC? - vswitch or NIC teaming?:
Which power scheme is active? I've always make sure mine is set to High performance.
High performance. On the host I checked, it's a GUI install, so I went to the nic properties and I can still see Power Management tab and the box for "Allow the computer to turn off this device to save power" is still checked.
When you do: Disable-NetAdapterPowerManagement -Name Ethernet
it removes that tab. -
@tim_g said in hyper-v bad physical NIC? - vswitch or NIC teaming?:
@mike-davis said in hyper-v bad physical NIC? - vswitch or NIC teaming?:
@black3dynamite said in hyper-v bad physical NIC? - vswitch or NIC teaming?:
Its possible Virtual Machine Queue (VMQ) could be causing the issue. Intel or Broadcom?
I'm not sure. I'll have to be onsite to find out. What are the symptoms of that? Would VMQ knock the host offline as well?
Yes. This is a well known issue in an older firmware of some 1gig nics, such as broadcoms. Updating the firmware resolves the issue, or turning off VMQ, which you can do via powershell on Hyper-V Server 2016.
VMQ is meant for 10gig NICs, but the firmware is messed up and has it on by default on some 1gig nics.
Here's some PS to get you started:
Get-NetAdapter Get-NetAdapterAdvancedProperty NIC1 Get-NetAdapterAdvancedProperty * -DisplayName “Virtual Machine Queues” Set-NetAdapterAdvancedProperty * -DisplayName “Virtual Machine Queues” -DisplayValue Disabled -
@tim_g Thanks for the commands. If I get the output below, does that mean my NICs don't have the option for VMQ?
PS C:\> Get-NetAdapter Name InterfaceDescription ifIndex Statu s ---- -------------------- ------- ----- vEthernet (vSwitch02) Hyper-V Virtual Ethernet Adapter #3 29 Up vEthernet (Broadcom BC... Hyper-V Virtual Ethernet Adapter #2 18 Up Ethernet 2 HP NC373i Multifunction Gigabit S...#40 13 Up Ethernet HP NC373i Multifunction Gigabit S...#39 12 Di... PS C:\> Get-NetAdapterAdvancedProperty Ethernet Name DisplayName DisplayValue ---- ----------- ------------ Ethernet Flow Control Auto Ethernet Interrupt Moderation Enabled Ethernet Jumbo Packet 1514 Ethernet Large Send Offload V2 (IPv4) Enabled Ethernet Maximum Number of RSS Queues 2 Ethernet Priority & VLAN Priority & VLAN ena... Ethernet Receive Buffers (0=Auto) 0 Ethernet Receive Side Scaling Enabled Ethernet Speed & Duplex Auto Negotiation Ethernet TCP Connection Offload (IPv4) Disabled Ethernet TCP/UDP Checksum Offload (I... Rx & Tx Enabled Ethernet Transmit Buffers (0=Auto) 0 Ethernet Wake On Magic Packet Disabled Ethernet Wake On Pattern Match Disabled Ethernet Locally Administered Address -- Ethernet VLAN ID 0 Ethernet Ethernet@WireSpeed Enabled PS C:\> Get-NetAdapterAdvancedProperty * -DisplayName "Virtual Machine Queues" Get-NetAdapterAdvancedProperty : No matching MSFT_NetAdapterAdvancedPropertySettingData objects found by CIM query for instances of the ROOT/StandardCimv2/MSFT_NetAdapterAdvancedPropertySettingData class on the CIM server: SELECT * FROM MSFT_NetAdapterAdvancedPropertySettingData WHERE ((Name LIKE '%')) AND ((DisplayName LIKE 'Virtual Machine Queues')). Verify query parameters and retry. At line:1 char:1 + Get-NetAdapterAdvancedProperty * -DisplayName "Virtual Machine Queues" + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : ObjectNotFound: (MSFT_NetAdapter...ertySettingDa ta:String) [Get-NetAdapterAdvancedProperty], CimJobException + FullyQualifiedErrorId : CmdletizationQuery_NotFound,Get-NetAdapterAdvanc edProperty PS C:\> -
@mike-davis said in hyper-v bad physical NIC? - vswitch or NIC teaming?:
@tim_g Thanks for the commands. If I get the output below, does that mean my NICs don't have the option for VMQ?
PS C:\> Get-NetAdapter Name InterfaceDescription ifIndex Statu s ---- -------------------- ------- ----- vEthernet (vSwitch02) Hyper-V Virtual Ethernet Adapter #3 29 Up vEthernet (Broadcom BC... Hyper-V Virtual Ethernet Adapter #2 18 Up Ethernet 2 HP NC373i Multifunction Gigabit S...#40 13 Up Ethernet HP NC373i Multifunction Gigabit S...#39 12 Di... PS C:\> Get-NetAdapterAdvancedProperty Ethernet Name DisplayName DisplayValue ---- ----------- ------------ Ethernet Flow Control Auto Ethernet Interrupt Moderation Enabled Ethernet Jumbo Packet 1514 Ethernet Large Send Offload V2 (IPv4) Enabled Ethernet Maximum Number of RSS Queues 2 Ethernet Priority & VLAN Priority & VLAN ena... Ethernet Receive Buffers (0=Auto) 0 Ethernet Receive Side Scaling Enabled Ethernet Speed & Duplex Auto Negotiation Ethernet TCP Connection Offload (IPv4) Disabled Ethernet TCP/UDP Checksum Offload (I... Rx & Tx Enabled Ethernet Transmit Buffers (0=Auto) 0 Ethernet Wake On Magic Packet Disabled Ethernet Wake On Pattern Match Disabled Ethernet Locally Administered Address -- Ethernet VLAN ID 0 Ethernet Ethernet@WireSpeed Enabled PS C:\> Get-NetAdapterAdvancedProperty * -DisplayName "Virtual Machine Queues" Get-NetAdapterAdvancedProperty : No matching MSFT_NetAdapterAdvancedPropertySettingData objects found by CIM query for instances of the ROOT/StandardCimv2/MSFT_NetAdapterAdvancedPropertySettingData class on the CIM server: SELECT * FROM MSFT_NetAdapterAdvancedPropertySettingData WHERE ((Name LIKE '%')) AND ((DisplayName LIKE 'Virtual Machine Queues')). Verify query parameters and retry. At line:1 char:1 + Get-NetAdapterAdvancedProperty * -DisplayName "Virtual Machine Queues" + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : ObjectNotFound: (MSFT_NetAdapter...ertySettingDa ta:String) [Get-NetAdapterAdvancedProperty], CimJobException + FullyQualifiedErrorId : CmdletizationQuery_NotFound,Get-NetAdapterAdvanc edProperty PS C:\>Yeah you seem to be fine there. No VMQ.
You could still try updating the firmware to see if that resolves the issue before replacing the NIC. -
@mike-davis said in hyper-v bad physical NIC? - vswitch or NIC teaming?:
Given that, would it make the most sense to create a new vSwitch with the second NIC and add that to the VM and see if it stays up like that, or would NIC teaming be a better way to go?
I wouldn't include a known bad NIC in a team. If that NIC is bad, disable it on the host if you can't switch it out. Create a new vSwitch from a working NIC and add that to the VM. You can use the same MAC if needed.
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@tim_g said in hyper-v bad physical NIC? - vswitch or NIC teaming?:
@mike-davis said in hyper-v bad physical NIC? - vswitch or NIC teaming?:
@tim_g Thanks for the commands. If I get the output below, does that mean my NICs don't have the option for VMQ?
Yeah you seem to be fine there. No VMQ.
You could still try updating the firmware to see if that resolves the issue before replacing the NIC.When I ran the commands in the output above that was on a spare non production server. I ran those commands last night on the problem server and it did have VMQ and it was enabled. I disabled it and it has been up 17 hours now. Before when it was failing, it would go down every 3-5 days, so I'll have to wait a few more days to know if the problem has been licked.
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You can also try:
get-netadaptervmqIf you want to do a blanket disable of VMQ (which is what I usually do):
get-netadaptervmq|disable-netadaptervmqWhat does the windows event log look like? (You said this was a gui install, right?)
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@dafyre said in hyper-v bad physical NIC? - vswitch or NIC teaming?:
What does the windows event log look like? (You said this was a gui install, right?)
My lab server is a GUI install, but the production server is non GUI.
