PowerShell - LDap Ping Times across DC's

Save as LDapPing.ps1 and run, outputs to c:\temp\LDap_Time_MeasureMents_Forest.csv, measures time across DC's for 1 minute to compare latency

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####User Variables###

$IntervalSeconds=1

$RunMinutes=1

$LogFile=".\LDAPTimes.csv"

###########################

Add-Type -AssemblyName System.DirectoryServices.Protocols

$LogFile=".\LDAPTimes.csv"

$DomainControllers = Get-ADDomainController -Filter * | Select Name, IPv4Address, Domain, Site

$StartDate=Get-Date

$Results = @()

do

{

foreach ($DomainController in $DomainControllers)

{

[String] $LdapServer=$DomainController.IPv4Address

[Int32] $Port=389

[Boolean] $FullyQualifiedDnsHostName=$False

[Boolean] $Connectionless=$True

$SearchFilter="(&(DnsDomain=$($DomainController.Domain))(NtVer=\06\00\00\02))"

$SearchRequest=new-object System.DirectoryServices.Protocols.SearchRequest

$SearchRequest.Scope="Base"

$SearchRequest.Filter=$SearchFilter

$LdapIdentifier=new-object System.DirectoryServices.Protocols.LdapDirectoryIdentifier($LdapServer, $Port, $FullyQualifiedDnsHostName, $Connectionless)

$LdapConnection=new-object System.DirectoryServices.Protocols.LdapConnection($LdapIdentifier)

$Result = New-Object System.Object

$Milliseconds=(Measure-Command {$LdapConnection.SendRequest($SearchRequest)}).TotalMilliseconds

$Result | Add-Member -Type NoteProperty -Name DateTime -Value (Get-Date)

$Result | Add-Member -Type Noteproperty -Name Site -Value $DomainController.Site

$Result | Add-Member -Type Noteproperty -Name Server -Value $DomainController.Name

$Result | Add-Member -Type Noteproperty -Name Milliseconds -Value $Milliseconds

$Result | Export-Csv -Path $Logfile -Append -NoTypeInformation

$Results += $Result

}

Start-Sleep -Seconds $IntervalSeconds

}

While ($StartDate.AddMinutes($RunMinutes) -gt (Get-Date))

$Results | Export-Csv c:\temp\LDap_Time_MeasureMents_Forest.csv

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