DFSR & Replication Health Check

<# 
    DFSR & Replication Health Check
    Run this on a Domain Controller (PowerShell as Administrator)
#>

$PartnerDCs = (Get-ADDomainController -Filter * | Where-Object { $_.Name -ne $env:COMPUTERNAME }).Hostname

Write-Host "==== DFSR Service Check on $env:COMPUTERNAME ====" -ForegroundColor Cyan
Get-Service DFSR | Format-Table Name, Status, StartType

Write-Host "`n==== SYSVOL & NETLOGON Shares ====" -ForegroundColor Cyan
Get-SmbShare | Where-Object { $_.Name -in @("SYSVOL","NETLOGON") } | Format-Table Name, Path, Description

Write-Host "`n==== Firewall & RPC Port Tests ====" -ForegroundColor Cyan
foreach ($dc in $PartnerDCs) {
    Write-Host "`nTesting connectivity to $dc ..." -ForegroundColor Yellow
    Test-NetConnection -ComputerName $dc -Port 135   # RPC Endpoint Mapper
    Test-NetConnection -ComputerName $dc -Port 445   # SMB
    Test-NetConnection -ComputerName $dc -Port 5722  # DFSR
}

Write-Host "`n==== Replication Summary ====" -ForegroundColor Cyan
repadmin /replsummary

Write-Host "`n==== Detailed Replication Status ====" -ForegroundColor Cyan
repadmin /showrepl $env:COMPUTERNAME

Write-Host "`n==== DFSR AD Poll (forces DC to check AD config) ====" -ForegroundColor Cyan
dfsrdiag pollad