This is the built-in help made by Microsoft for the command 'Get-NetAdapterSriov', in PowerShell version 3 - as retrieved from
Windows version 'Microsoft Windows Server 2012 Standard' PowerShell help files on 2016-06-23.
For PowerShell version 3 and up, where you have Update-Help, this command was run just before creating the web pages from the help files.
Gets the Single-Root I/O Virtualization (SR-IOV) properties of the network adapter.
Get-NetAdapterSriov [[-Name] <String[]>] [-AsJob] [-CimSession <CimSession[]>] [-IncludeHidden] [-ThrottleLimit <Int32>] [<CommonParameters>]
Get-NetAdapterSriov [-AsJob] [-CimSession <CimSession[]>] [-IncludeHidden] [-ThrottleLimit <Int32>] -InterfaceDescription <String[]>
[<CommonParameters>]
The Get-NetAdapterSriov cmdlet gets the Single-Root I/O Virtualization (SR-IOV) properties of network adapters that support SR-IOV. SR-IOV
enables network traffic to by-pass the software switch layer of the Hyper-V virtualization stack. As a result, the I/O overhead in the
software emulation layer is diminished and can achieve network performance that is nearly the same performance as in non-virtualized
environments. Run this cmdlet to display how the hardware is set to support SR-IOV. This cmdlet will display the properties of the network
adapter that relate to SR-IOV, such as the number of ports, and virtual functions (VFs). The property SriovSupport indicates potential reasons
for SR-IOV not functioning properly. The possible values for SriovSupport include the following.
- Unknown: Ensure that the computer has hardware support for SR-IOV and that I/O virtualization is enabled in the BIOS. Also ensure that the
computer is running Windows Server® 2012 and later.
- Supported: SR-IOV is supported and should be functioning properly.
- MissingAcs: SR-IOV cannot be used on this network adapter as the PCI Express hardware does not support Access Control Services (ACS). This
device may work in an alternate PCI Express slot. Contact your hardware vendor for further information.
- MissingPfDriver: SR-IOV cannot be used on this network adapter as the device or device driver does not support SR-IOV. If the network
adapter supports SR-IOV, contact the hardware vendor for an updated driver.
- NoBusResources: SR-IOV cannot be used on this network adapter as there are not enough PCI Express bus numbers available.
- NoIoMmuSupport: SR-IOV cannot be used on this computer because of one or more of the following reasons.
- - The processor does not support second level address translation (SLAT). For processors manufactured by Intel Corporation™ (Intel™), this
feature might be referred to as Extended Page Tables (EPT). For processors manufactured by Advanced Micro Devices™ (AMD™), this feature might
be referred to as Rapid Virtualization Indexing (RVI) or Nested Page Tables (NPT).
- - The chipset on the computer does not do Interrupt and/or DMA remapping, without which SR-IOV cannot be supported.
- - This computer has been configured to disable the use of I/O remapping hardware.
- NoVfBarSpace: SR-IOV cannot be used on this network adapter as there are not enough PCI Express BAR resources available. This may be due to
incorrect or partial configuration in the computer BIOS for Interrupt and DMA remapping. These settings may be referred to as SR-IOV or
input/output memory management unit (IOMMU) support. If the computer BIOS is correctly configured, this device may work in an alternate PCI
Express slot. Contact the original equipment manufacturer of the computer for further information.
- NoOscSupport: To use SR-IOV on this computer, the computer BIOS must be updated to allow Windows Server 2012 and later to control PCI
Express using _OSC HandOff. Contact the original equipment manufacturer of the computer for an update.
<
Where-Object
Disable-NetAdapterSriov
Enable-NetAdapterSriov
Get-NetAdapterSriovVf
Set-NetAdapterSriov
<
EXAMPLE 1
PS C:\>Get-NetAdapterSriov –Name *
This example displays the SR-IOV properties for all SR-IOV-capable network adapters.
EXAMPLE 2
PS C:\>Get-NetAdapterSriov -Name "Ethernet 2"
This example displays the SR-IOV properties for network adapter named Ethernet 2.
EXAMPLE 3
PS C:\>Get-NetAdpaterSriov -InterfaceDescription "Contoso 12345 Gigabit Network Device"
This example displays the SR-IOV properties for the network adapter with the interface description Contoso 12345 Gigabit Network Device.
EXAMPLE 4
PS C:\>Get-NetAdapterSriov –Name * | Where-Object -FilterScript { $_.Enabled –Eq $true }
This example gets the SR-IOV properties for the network adapter with SR-IOV enabled.