PowerShell for Windows Admins

Jan 1 2012   6:12AM GMT

Changing IP Connection Metric

Richard Siddaway Richard Siddaway Profile: Richard Siddaway


A question on the forums asked how the connection metrics could be set on a Windows system.

We need to start by identifying the network adapters using this function

function test-ipmetric {
Get-WmiObject -Class Win32_NetworkAdapter -Filter “AdapterType = ‘Ethernet 802.3′” |
foreach {
Get-WmiObject -Class Win32_NetworkAdapterConfiguration -Filter “Index=$($_.DeviceId)” |
select Description, Index, IPEnabled, IPConnectionMetric

test-ipmetric | ft -a

Description                                                                                  Index IPEnabled IPConnect
———–                                                                                      —–     ———    ———
NVIDIA nForce 10/100/1000 Mbps Networking Controller              7         True        20
Atheros AR5007 802.11b/g WiFi Adapter                                      11        True        10
Microsoft Virtual WiFi Miniport Adapter                                          17        False

I get three adapters returned

The important ones are those that have IPEnabled set to True.

identify which is to have priority then run

function set-ipmetric {
param (
Get-WmiObject -Class Win32_NetworkAdapterConfiguration -Filter “Index=$index” |
Invoke-WmiMethod -Name SetIPConnectionMetric -ArgumentList $metric

I used

set-ipmetric -index 7 -metric 200

set-ipmetric -index 11 -metric 100

This sets my wired to a higher metric than the wireless. If I wanted it the other way round

set-ipmetric -index 7 -metric 100

set-ipmetric -index 11 -metric 200

The system must be rebooted for the changes to take effect

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