Private/ConvertTo-CIDR.ps1
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function ConvertTo-CIDR { [CmdletBinding()] [OutputType([System.Collections.Hashtable])] param ( [Parameter(Mandatory)] [string] $IPAddress, [Parameter(Mandatory)] [string] $SubnetMask ) $ip = [IPAddress] $IPAddress $mask = [IPAddress] $SubnetMask [void] ($mask.IPAddressToString -match '(.*)\.(.*)\.(.*)\.(.*)') $suffix = "" $Matches[1..4] | ForEach-Object { $suffix += [Convert]::ToString([int] $_, 2) + ("0" * (8 - [Convert]::ToString([int] $_, 2).Length)) } $suffix = ($suffix -split "[^1]")[0].Length @{ IPAddres = $IPAddress CIDR = "$IPAddress/$suffix" CIDRSuffix = $suffix NetworkID = ([IPAddress] ($ip.Address -band $mask.Address)).IPAddressToString SubnetMask = $mask.IPAddressToString } } |