Add unfinished scripts for building Linux topology

ws2024/linux/Create-PortGroups.ps1

@@ -0,0 +1,53 @@
+<#
+Required parameter:
+-SwitchName   Name of the existing standard vSwitch where the port groups will be created.
+
+Optional parameter:
+-BaseVlanId   Starting VLAN ID. Default is 100.
+              The script creates:
+              WAN-Linux = BaseVlanId
+              INT-Linux = BaseVlanId + 1
+              DMZ-Linux = BaseVlanId + 2
+              VPN-Linux = BaseVlanId + 3
+
+Example:
+.\Create-PortGroups.ps1 -SwitchName vSwitch0
+#>
+[CmdletBinding()]
+param(
+    [Parameter(Mandatory = $true)]
+    [string]$SwitchName,
+
+    [ValidateRange(1, 4094)]
+    [int]$BaseVlanId = 100
+)
+
+$ErrorActionPreference = 'Stop'
+
+$switch = Get-VirtualSwitch -Name $SwitchName -ErrorAction Stop
+
+$portGroups = @(
+    @{ Name = 'WAN-Linux'; VlanId = $BaseVlanId },
+    @{ Name = 'INT-Linux'; VlanId = $BaseVlanId + 1 },
+    @{ Name = 'DMZ-Linux'; VlanId = $BaseVlanId + 2 },
+    @{ Name = 'VPN-Linux'; VlanId = $BaseVlanId + 3 }
+)
+
+foreach ($portGroup in $portGroups) {
+    $existing = Get-VirtualPortGroup -VirtualSwitch $switch -Name $portGroup.Name -ErrorAction SilentlyContinue
+
+    if ($existing) {
+        if ($existing.VLanId -ne $portGroup.VlanId) {
+            Set-VirtualPortGroup -VirtualPortGroup $existing -VLanId $portGroup.VlanId | Out-Null
+            Write-Host "Updated $($portGroup.Name) VLAN to $($portGroup.VlanId)"
+        }
+        else {
+            Write-Host "$($portGroup.Name) already exists"
+        }
+
+        continue
+    }
+
+    New-VirtualPortGroup -VirtualSwitch $switch -Name $portGroup.Name -VLanId $portGroup.VlanId | Out-Null
+    Write-Host "Created $($portGroup.Name) with VLAN $($portGroup.VlanId)"
+}