Richard Siddaway's Blog

Msndis class

The MSNdis class from the root\wmi namespace calls the MSNdis_CoHardwareStatus and MSNdis_CoDriverVersion classes. On my Windows 7 system it tries to call something else but I get a “Get-WmiObject : Not supported” error. Neither of these classes seems to have much in the way of documentation available.

Rather than calling MSNdis and getting a lot of WMI objects it would be better to combine the output. There are a set of MSNdis-co* classes

gwmi -Namespace root\wmi -List *ndis_co* | sort name

MSNdis_CoDriverVersion
MSNdis_CoHardwareStatus
MSNdis_CoLinkSpeed
MSNdis_CoMacOptions
MSNdis_CoMediaConnectStatus
MSNdis_CoMediaInUse
MSNdis_CoMediaSupported
MSNdis_CoMinimumLinkSpeed
MSNdis_CoReceivePduErrors
MSNdis_CoReceivePdusNoBuffer
MSNdis_CoReceivePdusOk
MSNdis_CoTransmitPduErrors
MSNdis_CoTransmitPdusOk
MSNdis_CountedString
MSNdis_CoVendorDescription
MSNdis_CoVendorDriverVersion
MSNdis_CoVendorId

Lets see what we can find out about them

function get-adaptercoinfo {            
param(            
 [string]$computer="."            
)            
Get-WmiObject -Namespace root\wmi -Class MSNdis_CoHardwareStatus `
-ComputerName $computer |            
foreach {            
                
  $drv = Get-WmiObject -Namespace root\wmi  `
  -Class MSNdis_CoDriverVersion -ComputerName $computer `
  -Filter "InstanceName='$($_.InstanceName)'"            
            
  New-Object -TypeName PSobject -Property @{            
    Computer = $_.__SERVER            
    Adapter = $_.InstanceName            
    Active = $_.Active            
    HardwareStatus = $_.NdisCoHardwareStatus            
    DriverVersion = $drv.NdisCoDriverVersion             
  }            
}            
}

Start with the MSNdis_CoHardwareStatus and match to MSNdis_CoDriverVersion  on instance name (associators don’t seem to be created for these classes). Put the appropriate properties into an object and output.

The output is best displayed like this

get-adaptercoinfo | ft -a