NIC Inventory

# https://www.reddit.com/r/PowerShell/comments/47r1kp/help_cleaning_up_a_nic_inventory_script/

$error.clear()
$ErrorActionPreference = 'Stop'

$list = @([pscustomobject]@{Server = $env:COMPUTERNAME})

$nictotal = @()
foreach ($server in $list) {
    $hash = [ordered]@{}
    $sname = $server.Server + '.group.wan'
    $hash['Server'] = $sname

    if ((Test-Connection -comp $sname -count 2 -quiet) -eq $true) {
        try {
            $NICS = gwmi -cn $sname win32_networkadapterconfiguration -Filter ipenabled=true
        } catch {
            $a = $_.Exception.Message
        }
        if ($NICS) {
            # Check to see if the machine is a VM.
            $vmcheck = gwmi -cn $sname win32_computersystem -Filter "model like '%virtual%'"

            $i = 1
            foreach ($NIC in $NICS) {
                $NICString = "NIC$i"
                $i++
                $ips = @($NIC.IPAddress | ? {$_ -notmatch ':'} | ? {$_}) -join ','
                $hash["$NICString IPAddress"] = $ips
                $hash["$NICString Default Gateway"] = @($NIC.defaultipgateway | ? {$_}) -join ','
                $hash["$NICString DNS"] = @($NIC.DNSServerSearchOrder | ? {$_}) -join ','
                if ($vmcheck) {
                    $vmnics = get-scvirtualnetworkadapter -vm $sname
                    foreach ($vnic in $vmnics) {
                        $vip = $vnic.IPv4Addresses
                        if ($vip -eq $ips) {
                            $vlanid = $vnic.vlanid
                        }
                    }
                    $hash["$NICString VLAN"] = $vlanid
                } else  {
                    $hash["$NICString VLAN"] = 'Default'
                }
            }
        }
    } else {
        <#
        $hash["$NICString IPAddress"] = ''
        $hash["$NICString Default Gateway"] = ''
        $hash["$NICString DNS"] = ''
        $hash["$NICString VLAN"] = ''
        #>
        "Can't ping $sname"
    }
    $nictotal += New-Object psobject -Property $hash
}

$nictotal