Get-VMNetworkPortId

This script can be used to find the network Port-ID on the lost host.

Scripts/Get-VMNetworkPortId.ps1

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+<#  
+.SYNOPSIS  
+    Finds the local ESXi network Port-ID where a VM is assigned 
+.DESCRIPTION 
+    Reports back a VM's Port-ID according to the local ESXi host. This correlates to the Port-ID which is displayed via ESXTop
+.NOTES  
+    Author:  Kyle Ruddy, @kmruddy, thatcouldbeaproblem.com
+.PARAMETER vm
+	The name of the desired VM 
+.EXAMPLE
+	PS> .\Get-VMNetworkPortId.ps1 -vm vmname 
+.EXAMPLE
+	PS> Get-VM -Name vmname | .\Get-VMNetworkPortId.ps1 
+#>
+[CmdletBinding(SupportsShouldProcess=$True)] 
+	param(
+		[Parameter(Mandatory=$true,Position=0,ValueFromPipelineByPropertyName=$true)]
+        [Alias('Name')]
+		[String[]]$vm
+  	)
+
+    Begin {
+		#Create an array to store output prior to return
+		$output = @()
+	
+	}
+
+	Process {
+		#Loop through each of the input values
+		foreach ($v in $vm) {
+			#Validate the input is a valid VM
+			$vmobj = Get-VM -Name $v -erroraction silentlycontinue
+			if (!$vmobj) {Write-Verbose "No VM found by the name $vm."}
+			else {
+				#Create a temporary object to store individual ouput
+				$tempout = "" | select VM,PortId
+				#Start an ESXCLI session with the host where the VM resides
+				$esxcli = Get-EsxCli -VMHost $vmobj.VMHost -v2
+				#ESXCLI call to obtain information about the VM, specifically its WorldID
+				$vmNetInfo = $esxcli.network.vm.list.Invoke() | ?{$_.Name -eq $vmobj.Name}
+				#Create spec to poll the host for the network information of the VM
+				$portArgs = $esxcli.network.vm.port.list.CreateArgs()
+				$portArgs.worldid = $vmNetInfo.WorldID
+				#Output the values to the temporary object
+				$tempout.VM = $vmobj.Name 
+				$tempout.PortId = $esxcli.network.vm.port.list.Invoke($portArgs).PortId
+				$output += $tempout
+			}
+		}
+	}
+
+    End {
+
+        return $output
+
+    }