Recently I needed to find all Domain Controllers in a large Active Directory forest (and see the AD Domain Functional Level for each domain).<\/p>\n
Here’s the PowerShell code which leverages the Active Directory PowerShell module cmdlets.<\/p>\n
<\/p>\n
import-module ActiveDirectory
\n$ADForestInfo = Get-ADForest
\n$ADForestInfoName = $ADForestInfo.Name
\n$ADForestInfoDomains = $ADForestInfo.Domains
\n$ADForestInfoForestMode = $ADForestInfo.ForestMode
\n$AllDCs = $Null
\nForEach ($DomainDNS in $ADForestInfoDomains)
\n{
\n[string]$DomainDC = (Get-ADDomainController -Domain $DomainDNS -discover -service “ADWS”).HostName
\n$DomainInfo = Get-ADDomain -server $DomainDC
\n$DomainInfoDomainMode = $DomainInfo.DomainMode
\n[array]$AllDomainDCs = Get-ADDomainController -server $DomainDC -filter *
\n$AllDomainDCsCount = $AllDomainDCs.Count
\nWrite-Output “Discovered $AllDomainDCsCount Domain Controllers in the $DomainDNS Domain (DFL: $DomainInfoDomainMode) ”
\n[array]$AllDCs += $AllDomainDCs
\n}
\n$AllDCsCount = $AllDCs.Count
\nWrite-Output “Discovered $AllDCsCount Domain Controllers in the AD Forest $ADForestInfoName (FFL: $ADForestInfoForestMode) ”
\n$AllDCs | select domain,name,operatingsystem,OperatingSystemServicePack | sort domain | ft -auto<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"Recently I needed to find all Domain Controllers in a large Active Directory forest (and see the AD Domain Functional Level for each domain). Here’s the PowerShell code which leverages the Active Directory PowerShell module cmdlets. import-module ActiveDirectory $ADForestInfo = Get-ADForest $ADForestInfoName = $ADForestInfo.Name $ADForestInfoDomains = $ADForestInfo.Domains $ADForestInfoForestMode = $ADForestInfo.ForestMode $AllDCs = $Null ForEach … <\/p>\n