GetRoutesPerAdapter

Description:

This Powershell script enumerates the actual network routes with their corresponding adapter name.

You can use the script like this:

• Get-ActiveRoutesPerAdapter -AddressType IPv4 | Sort-Object Interface | Format-Table -AutoSize
• Get-ActiveRoutesPerAdapter -AddressType IPv4 | Where-Object Interface -like "Ethernet" | Format-Table

Sample Output:

DestinationPrefix	DefaultGateway	NextHopLocalIP	RouteMetric	InterfaceMetric	Interface	IfIndex
224.0.0.0/4		100.64.137.197	256	1	MYVPN	30
216.251.141.226/32		100.64.137.197	256	1	MYVPN	30
207.68.174.0/24		100.64.137.197	256	1	MYVPN	30
100.64.137.197/32		100.64.137.197	256	1	MYVPN	30
10.229.131.41/32		10.229.131.41	256	35	Wi-Fi	12
0.0.0.0/0	10.229.128.1		0	35	Wi-Fi	12

Code:

Function Get-ActiveRoutesPerAdapter {
    [CmdletBinding()]
    Param (
        [Parameter(Mandatory = $true,
            ParameterSetName = 'AddressType')]
        [ValidateSet('IPv4', 'IPv6')]
        [string]$AddressType
    )
    begin {}
    process {
        Get-NetRoute -AddressFamily $AddressType -PolicyStore ActiveStore | `
            Select-Object -Property `
        @{label = "DestinationPrefix" ; expression = { $PSItem.DestinationPrefix } }, 
        @{label = "DefaultGateway" ; expression = { if ($PSItem.NextHop -ne '0.0.0.0') { $_.NextHop } } }, 
        @{label = 'NextHopLocalIP'; Expression = { if ($PSItem.NextHop -eq '0.0.0.0') { ($PSItem | Get-NetIPAddress -AddressFamily $AddressType | Where-Object ifIndex -EQ $PSItem.IfIndex).IPAddress } } }, 
        @{label = "RouteMetric" ; expression = { $PSItem.RouteMetric } },    
        @{label = "InterfaceMetric" ; expression = { $PSItem.InterfaceMetric } },
        @{label = 'Interface'; Expression = { ($PSItem | Get-NetIPInterface | Where-Object IfIndex -EQ $PSItem.IfIndex).InterfaceAlias } },
        @{label = "IfIndex" ; expression = { $PSItem.IfIndex } }  
    }
    end {}
}