CheckActiveDirectorySites.ps1
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Script
<#
Check Active Directory Sites
http://blogs.metcorpconsulting.com/tech/?p=366
#>
# Set variables
[array] $SitesWithNoSubnet = @()
[array] $SitesWithNoSiteLinks = @()
[array] $SitesWithNoISTG = @()
[array] $DCsnotGC = @()
[array] $SitesWithNoGC = @()
#Get AD Domain (lightweight & fast method)
$DomainDNS = [System.DirectoryServices.ActiveDirectory.Domain]::GetCurrentDomain().Name
import-module activedirectory
Write-Verbose "Get AD Site List `r"
[array] $ADSites = [System.DirectoryServices.ActiveDirectory.Forest]::GetCurrentForest().Sites
$ADSitesCount = $ADSites.Count
Write-Output "There are $ADSitesCount AD Sites `r"
## Check AD Sites
Write-Verbose "Checking for AD Site issues `r "
ForEach ($Site in $ADSites) {
## OPEN ForEach Site in ADSites
$SiteName = $Site.Name
[array] $SiteSubnets = $Site.Subnets
[array] $SiteServers = $Site.Servers
[array] $SiteAdjacentSites = $Site.AdjacentSites
[array] $SiteLinks = $Site.SiteLinks
$SiteInterSiteTopologyGenerator = $Site.InterSiteTopologyGenerator
# Check for missing subnets
IF (!$SiteSubnets) {
## OPEN IF there are no Site Subnets
Write-Verbose "The site $SiteName does not have a configured subnet. `r "
[array] $SitesWithNoSubnet += $SiteName
} ## OPEN IF there are no Site Subnets
# Check for missing site link
IF (!$SiteLinks) {
## OPEN IF there are no Site Links for this site
Write-Verbose "The site $SiteName does not have an associated site link. `r "
[array] $SitesWithNoSiteLinks += $SiteName
} ## OPEN IF there are no Site Links for this site
# Check for missing ISTG
IF (!$SiteInterSiteTopologyGenerator) {
## OPEN IF there are no ISTG for this site
Write-Verbose "The site $SiteName does not have a configured InterSite Topology Generator server `r "
[array] $SitesWithNoISTG += $SiteName
} ## OPEN IF there are no ISTG for this site
# Find AD Sites with no GCs
$SiteDC = Get-ADDomainController -filter { (Site -eq $Site) -and (IsGlobalCatalog -eq $True) }
IF (!$SiteDC) {
## OPEN IF there are no GCs for this site
Write-Verbose "The site $SiteName does not have a Global Catalog associated with it `r "
[array] $SitesWithNoGC += $SiteName
} ## OPEN IF there are no GCs for this site
} ## CLOSE ForEach Site in ADSites
$SitesWithNoSubnetCount = $SitesWithNoSubnet.Count
IF ($SitesWithNoSubnetCount -ge 1) {
## IF Count is >= 1
Write-Output "The following $SitesWithNoSubnetCount sites do not have subnets associated with them `r "
$SitesWithNoSubnet
Write-Output " `r "
} ## IF Count is >= 1
$SitesWithNoSiteLinksCount = $SitesWithNoSiteLinks.Count
IF ($SitesWithNoSiteLinksCount -ge 1) {
## IF Count is >= 1
Write-Output "The following $SitesWithNoSiteLinksCount sites do not have Site Links associated with them `r "
$SitesWithNoSiteLinks
Write-Output " `r "
} ## IF Count is >= 1
$SitesWithNoISTGCount = $SitesWithNoISTG.Count
IF ($SitesWithNoISTGCount -ge 1) {
## IF Count is >= 1
Write-Output "The following $SitesWithNoISTGCount sites do not an ISTG associated with them `r "
$SitesWithNoISTG
Write-Output " `r "
} ## IF Count is >= 1
$SitesWithNoGCCount = $SitesWithNoGC.Count
IF ($SitesWithNoGCCount -ge 1) {
## IF Count is >= 1
Write-Output "The following $SitesWithNoGCCount sites do not have a GC associated with them `r "
$SitesWithNoGC
Write-Output " `r "
} ## IF Count is >= 1
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