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Get-NetAdapterSriov [-AsJob] [-CimSession ] [-IncludeHidden] [-ThrottleLimit ]
-InterfaceDescription []
DESCRIPTION
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 Serverr 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
CorporationT (IntelT), this feature might be referred to as Extended Page Tables (EPT). For processors
manufactured by Advanced Micro DevicesT (AMDT), 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.
PARAMETERS
-AsJob []
ps_cimcommon_asjob
Required? false
Position? named
Default value
Accept pipeline input? false
Accept wildcard characters? false
-CimSession
Runs the cmdlet in a remote session or on a remote computer. Enter a computer name or a session object, such
as the output of a New-CimSession or Get-CimSession cmdlet. The default is the current session on the local
computer.
Required? false
Position? named
Default value
Accept pipeline input? false
Accept wildcard characters? false
-IncludeHidden []
Indicates that the cmdlet includes both visible and hidden network adapters in the operation. If a wildcard
character is used to identify a network adapter, then the wildcard character is matched against both hidden
and visible adapters.
Required? false
Position? named
Default value
Accept pipeline input? false
Accept wildcard characters? false
-InterfaceDescription
Specifies an array of network adapter interface descriptions. For a physical network adapter this is typically
the name of the vendor of the network adapter followed by a part number and description, such as Contoso 12345
Gigabit Network Device.
Required? true
Position? named
Default value
Accept pipeline input? true (ByPropertyName)
Accept wildcard characters? true
-Name
Specifies an array network adapter names. The name of the network adapter from which this cmdlet gets the
SR-IOV properties.
Required? false
Position? 1
Default value
Accept pipeline input? true (ByPropertyName)
Accept wildcard characters? true
-ThrottleLimit
Specifies the maximum number of concurrent operations that can be established to run the cmdlet. If this
parameter is omitted or a value of 0 is entered, then Windows PowerShellr calculates an optimum throttle limit
for the cmdlet based on the number of CIM cmdlets that are running on the computer. The throttle limit applies
only to the current cmdlet, not to the session or to the computer.
Required? false
Position? named
Default value
Accept pipeline input? false
Accept wildcard characters? false
This cmdlet supports the common parameters: Verbose, Debug,
ErrorAction, ErrorVariable, WarningAction, WarningVariable,
OutBuffer, PipelineVariable, and OutVariable. For more information, see
about_CommonParameters (https:/go.microsoft.com/fwlink/?LinkID=113216).
INPUTS
None
OUTPUTS
Microsoft.Management.Infrastructure.CimInstance#ROOT/StandardCimv2/MSFT_NetAdapterSriovSettingData
The Microsoft.Management.Infrastructure.CimInstance object is a wrapper class that displays Windows Management
Instrumentation (WMI) objects. The path after the pound sign (#) provides the namespace and class name for the
underlying WMI object.
Example 1: Display SR-IOV properties for all SR-IOV-capable network adapters
PS C:\>Get-NetAdapterSriov -Name "*"
This command displays the SR-IOV properties for all SR-IOV-capable network adapters.
Example 2: Display SR-IOV properties for the specified network adapter
PS C:\>Get-NetAdapterSriov -Name "Ethernet 2"
This command displays the SR-IOV properties for network adapter named Ethernet 2.
Example 3: Display SR-IOV properties for the network adapter with the specified interface description
PS C:\>Get-NetAdpaterSriov -InterfaceDescription "Contoso 12345 Gigabit Network Device"
This command displays the SR-IOV properties for the network adapter with the interface description named Contoso
12345 Gigabit Network Device.
Example 4: Get all SR-IOV properties for all network adapters with SR-IOV enabled
PS C:\>Get-NetAdapterSriov -Name "*" | Where-Object -FilterScript { $_.Enabled -Eq $true }
This command gets the SR-IOV properties for the network adapter with SR-IOV enabled.
RELATED LINKS
Online Version:
Disable-NetAdapterSriov
Enable-NetAdapterSriov
Get-NetAdapterSriovVf
Set-NetAdapterSriov