InterfaceMetric: Configure a static metric for an IPv4 Interface

CHANGELOG.md

@@ -10,6 +10,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - IPAddress
   - Improved integration test structure.
 
+### Added
+
+- NetIPInterface
+  - Added `InterfaceMetric` parameter- fixes [Issue #473](https://github.com/PowerShell/xNetworking/issues/473).
+
 ### Fixed
 
 - NetIPInterface

source/DSCResources/DSC_NetIPInterface/DSC_NetIPInterface.data.psd1

@@ -63,6 +63,10 @@
         @{
             ParameterName = 'NlMtuBytes'
             PropertyName = 'NlMtu'
+        },
+        @{
+            ParameterName = 'InterfaceMetric'
+            PropertyName = 'InterfaceMetric'
         }
     )
 }

source/DSCResources/DSC_NetIPInterface/DSC_NetIPInterface.psm1

@@ -118,6 +118,9 @@ function Get-TargetResource
 
     .PARAMETER NlMtu
         Specifies the network layer Maximum Transmission Unit (MTU) value, in bytes, for an IP interface.
+
+    .PARAMETER InterfaceMetric
+        Specifies the metric for an IP interface.
 #>
 function Set-TargetResource
 {
@@ -211,7 +214,11 @@ function Set-TargetResource
 
         [Parameter()]
         [System.UInt32]
-        $NlMtu
+        $NlMtu,
+
+        [Parameter()]
+        [System.UInt32]
+        $InterfaceMetric
     )
 
     Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): "
@@ -322,6 +329,9 @@ function Set-TargetResource
 
     .PARAMETER NlMtu
         Specifies the network layer Maximum Transmission Unit (MTU) value, in bytes, for an IP interface.
+
+    .PARAMETER InterfaceMetric
+        Specifies the metric for an IP interface.
 #>
 function Test-TargetResource
 {
@@ -416,7 +426,11 @@ function Test-TargetResource
 
         [Parameter()]
         [System.UInt32]
-        $NlMtu
+        $NlMtu,
+
+        [Parameter()]
+        [System.UInt32]
+        $InterfaceMetric
     )
 
     Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): "

source/DSCResources/DSC_NetIPInterface/DSC_NetIPInterface.schema.mof

@@ -19,4 +19,5 @@ class DSC_NetIPInterface : OMI_BaseResource
     [Write, Description("Specifies the receive value for a weak host model."), ValueMap{"Enabled", "Disabled"},Values{"Enabled", "Disabled"}] String WeakHostReceive;
     [Write, Description("Specifies the send value for a weak host model."), ValueMap{"Enabled", "Disabled"},Values{"Enabled", "Disabled"}] String WeakHostSend;
     [Write, Description("Specifies the network layer Maximum Transmission Unit (MTU) value, in bytes, for an IP interface.")] UInt32 NlMtu;
+    [Write, Description("Specifies the metric for an IP interface.")] UInt32 InterfaceMetric;
 };

source/Examples/Resources/NetIPInterface/5-NetIPInterface_SetInterfaceMetric.ps1

@@ -0,0 +1,46 @@
+<#PSScriptInfo
+.VERSION 1.0.0
+.GUID c67b7df4-bafa-4bca-bb43-349b44df3530
+.AUTHOR DSC Community
+.COMPANYNAME DSC Community
+.COPYRIGHT Copyright the DSC Community contributors. All rights reserved.
+.TAGS DSCConfiguration
+.LICENSEURI https://github.com/dsccommunity/NetworkingDsc/blob/master/LICENSE
+.PROJECTURI https://github.com/dsccommunity/NetworkingDsc
+.ICONURI
+.EXTERNALMODULEDEPENDENCIES
+.REQUIREDSCRIPTS
+.EXTERNALSCRIPTDEPENDENCIES
+.RELEASENOTES First version.
+.PRIVATEDATA 2016-Datacenter,2016-Datacenter-Server-Core
+#>
+
+#Requires -module NetworkingDsc
+
+<#
+    .DESCRIPTION
+    Set a specified interface metrics for the network adapters with alias 'Ethernet' and 'Ethernet 2'.
+#>
+Configuration NetIPInterface_SetInterfaceMetric
+{
+    Import-DscResource -Module NetworkingDsc
+
+    Node localhost
+    {
+        NetIPInterface EthernetMetric
+        {
+            InterfaceAlias  = 'Ethernet'
+            AddressFamily   = 'IPv4'
+            AutomaticMetric = 'Disabled'
+            InterfaceMetric = 10
+        }
+
+        NetIPInterface Ethernet2Metric
+        {
+            InterfaceAlias  = 'Ethernet 2'
+            AddressFamily   = 'IPv4'
+            AutomaticMetric = 'Disabled'
+            InterfaceMetric = 20
+        }
+    }
+}

tests/Integration/DSC_NetIPInterface.Integration.Tests.ps1

@@ -136,6 +136,7 @@ try
                             InterfaceAlias              = 'NetworkingDscLBA'
                             AddressFamily               = 'IPv4'
                             AdvertiseDefaultRoute       = 'Disabled'
+                            AutomaticMetric             = 'Disabled'
                             Dhcp                        = 'Disabled'
                             DirectedMacWolPattern       = 'Disabled'
                             EcnMarking                  = 'Disabled'
@@ -148,6 +149,7 @@ try
                             WeakHostReceive             = 'Disabled'
                             WeakHostSend                = 'Disabled'
                             NlMtu                       = 1500
+                            InterfaceMetric             = 20
                         }
                     )
                 }
@@ -179,6 +181,7 @@ try
                     $current.InterfaceAlias                  | Should -Be $script:configData.AllNodes[0].InterfaceAlias
                     $current.AddressFamily                   | Should -Be $script:configData.AllNodes[0].AddressFamily
                     $current.AdvertiseDefaultRoute           | Should -Be $script:configData.AllNodes[0].AdvertiseDefaultRoute
+                    $current.AutomaticMetric                 | Should -Be $script:configData.AllNodes[0].AutomaticMetric
                     $current.Dhcp                            | Should -Be $script:configData.AllNodes[0].Dhcp
                     $current.DirectedMacWolPattern           | Should -Be $script:configData.AllNodes[0].DirectedMacWolPattern
                     $current.EcnMarking                      | Should -Be $script:configData.AllNodes[0].EcnMarking
@@ -191,6 +194,7 @@ try
                     $current.WeakHostReceive                 | Should -Be $script:configData.AllNodes[0].WeakHostReceive
                     $current.WeakHostSend                    | Should -Be $script:configData.AllNodes[0].WeakHostSend
                     $current.NlMtu                           | Should -Be $script:configData.AllNodes[0].NlMtu
+                    $current.InterfaceMetric                 | Should -Be $script:configData.AllNodes[0].InterfaceMetric
                 }
             }
         }

tests/Integration/DSC_NetIPInterface.config.ps1

@@ -21,6 +21,7 @@ configuration DSC_NetIPInterface_Config_Enabled {
             WeakHostReceive                 = $Node.WeakHostReceive
             WeakHostSend                    = $Node.WeakHostSend
             NlMtu                           = $Node.NlMtu
+            InterfaceMetric                 = $Node.InterfaceMetric
         }
     }
 }
@@ -46,6 +47,7 @@ configuration DSC_NetIPInterface_Config_Disabled {
             WeakHostReceive                 = $Node.WeakHostReceive
             WeakHostSend                    = $Node.WeakHostSend
             NlMtu                           = $Node.NlMtu
+            InterfaceMetric                 = $Node.InterfaceMetric
         }
     }
 }

tests/Unit/DSC_NetIPInterface.Tests.ps1

@@ -171,6 +171,14 @@ try
                 ParameterFilter = {
                     $InterfaceAlias -eq 'Ethernet' -and $AddressFamily -eq 'IPv4' -and $NlMtuBytes -eq 1500
                 }
+            },
+            @{
+                Name            = 'InterfaceMetric'
+                MockedValue     = [System.Uint32] 20
+                TestValue       = [System.Uint32] 15
+                ParameterFilter = {
+                    $InterfaceAlias -eq 'Ethernet' -and $AddressFamily -eq 'IPv4' -and $InterfaceMetric -eq 15
+                }
             }
         )