PowerShell for Windows Admins

Jul 9 2011   6:45AM GMT

Linking the network card to the Registry settings

Richard Siddaway Richard Siddaway Profile: Richard Siddaway

An interesting problem from the forum. Get the IP enabled network adapters and read the associated registry keys to get the value of the NetLuidIndex.

$HKLM = 2147483650            
$reg = [wmiclass]'\\.\root\default:StdRegprov'            
$keyroot = "SYSTEM\CurrentControlSet\Control\Class\{4D36E972-E325-11CE-BFC1-08002BE10318}"            
$value = "NetLuidIndex"            
Get-WmiObject -Class Win32_NetworkAdapterConfiguration -Filter "IPEnabled='$true'" |            
foreach {            
$data = $_.Caption -split "]"            
$suffix = $data[0].Substring(($data[0].length-4),4)            
$key = $keyroot + "\$suffix"            
$nli = $reg.GetDwordValue($HKLM, $key, $value)  ## REG_DWORD            
$nic = New-Object -TypeName PSObject -Property @{            
         Description = $_.Description            
         DeviceID = $_.Index               
         Suffix = $suffix            
         NetLuidIndex = $nli.uValue            
} | Format-Table -AutoSize

Use the standard registry settings to read the HKLM hive and setup the WMI registry provider.

Get the network cards using a filter of IPEnabled = $true.

For each card break the caption property to get  the subkey value and add it to the key root. Do a standard DWORD read on the registry and construct an object to display the results

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  • Network Adapter details - PowerShell for Windows Admins
    [...] this post -https://itknowledgeexchange.techtarget.com/powershell/linking-the-network-card-to-the-registry-settin...  – I showed how to get the NetLuidIndex by linking the network card to the matching registry [...]
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