dhcp-scope-monitor.ps1
· 26 KiB · PowerShell
Orginalformat
#requires -Version 7.0
<#
.SYNOPSIS
Universal DHCP Scope Monitoring Utility
.DESCRIPTION
Cross-platform DHCP monitoring utility for:
- Windows
- macOS
- Linux (including Debian)
Execution modes:
1. LOCAL : On Windows with the DhcpServer module available.
2. REMOTE : On Windows/macOS/Linux using PowerShell Remoting over SSH
to a Windows DHCP Server.
Remote DHCP objects are flattened on the Windows server before being
returned to non-Windows clients, avoiding CIM/MI serialization issues
such as libmi errors on macOS/Linux.
.EXAMPLE
pwsh ./dhcp-monitor-universal.ps1
On macOS/Linux (or Windows without the local DhcpServer module), the
script asks for the DHCP Server hostname/IP and SSH username.
.EXAMPLE
pwsh ./dhcp-monitor-universal.ps1 -DhcpServer 192.168.1.10 -UserName "CONTOSO\\administrator"
Skips the interactive server/username questions.
.EXAMPLE
pwsh ./dhcp-monitor-universal.ps1 -Mode Local
Forces Local mode. Requires Windows and the DhcpServer module.
.NOTES
In Remote mode, the script interactively asks for:
- DHCP Server hostname or IP address
- SSH username
#>
param (
[string]$DhcpServer,
[string]$UserName,
[ValidateSet("Auto", "Local", "Remote")]
[string]$Mode = "Auto"
)
$ErrorActionPreference = "Stop"
$script:DhcpSession = $null
$script:ExecutionMode = $null
$script:DhcpServer = $DhcpServer
$script:UserName = $UserName
# ============================================================
# UI HELPERS
# ============================================================
function Show-Title {
Clear-Host
Write-Host "===================================================" -ForegroundColor Cyan
Write-Host " Universal DHCP Scope Monitoring Utility" -ForegroundColor Cyan
Write-Host "===================================================" -ForegroundColor Cyan
Write-Host
Write-Host "Client OS : $([System.Runtime.InteropServices.RuntimeInformation]::OSDescription)"
Write-Host "Mode : $script:ExecutionMode"
if ($script:ExecutionMode -eq "Remote") {
Write-Host "DHCP Server : $script:DhcpServer"
Write-Host "SSH User : $script:UserName"
}
Write-Host
}
function Wait-Enter {
param([string]$Message = "Tekan ENTER untuk melanjutkan")
[void](Read-Host $Message)
}
function Convert-ToDisplayString {
param($Value)
if ($null -eq $Value) { return "" }
return $Value.ToString()
}
# ============================================================
# CONNECTION / EXECUTION MODE
# ============================================================
function Test-LocalDhcpModule {
if (-not $IsWindows) {
return $false
}
return [bool](Get-Module -ListAvailable -Name DhcpServer)
}
function Connect-DhcpBackend {
if ($Mode -eq "Local") {
if (-not (Test-LocalDhcpModule)) {
throw "Mode Local dipilih, tetapi module DhcpServer tidak tersedia."
}
Import-Module DhcpServer -ErrorAction Stop
$script:ExecutionMode = "Local"
return
}
if ($Mode -eq "Auto" -and (Test-LocalDhcpModule)) {
Import-Module DhcpServer -ErrorAction Stop
$script:ExecutionMode = "Local"
return
}
$script:ExecutionMode = "Remote"
Write-Host
Write-Host "Remote DHCP Server Configuration" -ForegroundColor Cyan
Write-Host "---------------------------------------------------"
while ([string]::IsNullOrWhiteSpace($script:DhcpServer)) {
$script:DhcpServer = Read-Host "DHCP Server hostname / IP"
if ([string]::IsNullOrWhiteSpace($script:DhcpServer)) {
Write-Host "DHCP Server tidak boleh kosong." -ForegroundColor Red
}
}
while ([string]::IsNullOrWhiteSpace($script:UserName)) {
$script:UserName = Read-Host "SSH username (contoh: DOMAIN\administrator)"
if ([string]::IsNullOrWhiteSpace($script:UserName)) {
Write-Host "Username tidak boleh kosong." -ForegroundColor Red
}
}
Write-Host
Write-Host "Menghubungkan ke Windows DHCP Server..." -ForegroundColor Cyan
Write-Host "Server : $script:DhcpServer"
Write-Host "User : $script:UserName"
Write-Host
try {
$script:DhcpSession = New-PSSession `
-HostName $script:DhcpServer `
-UserName $script:UserName `
-ErrorAction Stop
Write-Host "Koneksi berhasil." -ForegroundColor Green
Start-Sleep -Milliseconds 700
}
catch {
throw "Gagal membuat PowerShell SSH session ke $script:DhcpServer. $($_.Exception.Message)"
}
}
function Disconnect-DhcpBackend {
if ($null -ne $script:DhcpSession) {
try {
Remove-PSSession -Session $script:DhcpSession -ErrorAction SilentlyContinue
}
catch {}
$script:DhcpSession = $null
}
}
function Test-DhcpSession {
if ($script:ExecutionMode -ne "Remote") {
return $true
}
if ($null -eq $script:DhcpSession) {
return $false
}
return ($script:DhcpSession.State -eq "Opened")
}
# ============================================================
# DATA ACCESS LAYER
# ============================================================
function Get-DhcpScopeData {
param (
[Parameter(Mandatory)]
[string]$ScopeId
)
if ($script:ExecutionMode -eq "Local") {
$s = Get-DhcpServerv4Scope -ScopeId $ScopeId -ErrorAction Stop
return [PSCustomObject]@{
ScopeId = Convert-ToDisplayString $s.ScopeId
Name = $s.Name
State = Convert-ToDisplayString $s.State
StartRange = Convert-ToDisplayString $s.StartRange
EndRange = Convert-ToDisplayString $s.EndRange
SubnetMask = Convert-ToDisplayString $s.SubnetMask
LeaseDuration = Convert-ToDisplayString $s.LeaseDuration
}
}
return Invoke-Command -Session $script:DhcpSession -ArgumentList $ScopeId -ScriptBlock {
param($RemoteScopeId)
$s = Get-DhcpServerv4Scope -ScopeId $RemoteScopeId -ErrorAction Stop
[PSCustomObject]@{
ScopeId = if ($null -eq $s.ScopeId) { "" } else { $s.ScopeId.ToString() }
Name = $s.Name
State = if ($null -eq $s.State) { "" } else { $s.State.ToString() }
StartRange = if ($null -eq $s.StartRange) { "" } else { $s.StartRange.ToString() }
EndRange = if ($null -eq $s.EndRange) { "" } else { $s.EndRange.ToString() }
SubnetMask = if ($null -eq $s.SubnetMask) { "" } else { $s.SubnetMask.ToString() }
LeaseDuration = if ($null -eq $s.LeaseDuration) { "" } else { $s.LeaseDuration.ToString() }
}
} -ErrorAction Stop
}
function Get-DhcpStatisticsData {
param (
[Parameter(Mandatory)]
[string]$ScopeId
)
if ($script:ExecutionMode -eq "Local") {
$s = Get-DhcpServerv4ScopeStatistics -ScopeId $ScopeId -ErrorAction Stop
return [PSCustomObject]@{
Free = [long]$s.Free
InUse = [long]$s.InUse
PercentageInUse = [double]$s.PercentageInUse
Reserved = [long]$s.Reserved
Pending = [long]$s.Pending
SuperscopeName = Convert-ToDisplayString $s.SuperscopeName
}
}
return Invoke-Command -Session $script:DhcpSession -ArgumentList $ScopeId -ScriptBlock {
param($RemoteScopeId)
$s = Get-DhcpServerv4ScopeStatistics -ScopeId $RemoteScopeId -ErrorAction Stop
[PSCustomObject]@{
Free = [long]$s.Free
InUse = [long]$s.InUse
PercentageInUse = [double]$s.PercentageInUse
Reserved = [long]$s.Reserved
Pending = [long]$s.Pending
SuperscopeName = if ($null -eq $s.SuperscopeName) { "" } else { $s.SuperscopeName.ToString() }
}
} -ErrorAction Stop
}
function Get-DhcpLeaseData {
param (
[Parameter(Mandatory)]
[string]$ScopeId
)
if ($script:ExecutionMode -eq "Local") {
$raw = @(Get-DhcpServerv4Lease -ScopeId $ScopeId -ErrorAction Stop)
return @(
foreach ($lease in $raw) {
[PSCustomObject]@{
IPAddress = Convert-ToDisplayString $lease.IPAddress
HostName = Convert-ToDisplayString $lease.HostName
ClientId = Convert-ToDisplayString $lease.ClientId
AddressState = Convert-ToDisplayString $lease.AddressState
LeaseExpiryTime = $lease.LeaseExpiryTime
}
}
)
}
# IMPORTANT:
# Materialize the DHCP CIM result first, then flatten every property
# while still executing on Windows. This prevents libmi/CIM objects
# from crossing the SSH remoting boundary.
return @(
Invoke-Command -Session $script:DhcpSession -ArgumentList $ScopeId -ScriptBlock {
param($RemoteScopeId)
$rawLeases = @(Get-DhcpServerv4Lease -ScopeId $RemoteScopeId -ErrorAction Stop)
foreach ($lease in $rawLeases) {
$expiry = $null
if ($null -ne $lease.LeaseExpiryTime) {
try {
$expiry = $lease.LeaseExpiryTime.ToString("o")
}
catch {
$expiry = $lease.LeaseExpiryTime.ToString()
}
}
[PSCustomObject]@{
IPAddress = if ($null -eq $lease.IPAddress) { "" } else { $lease.IPAddress.ToString() }
HostName = if ($null -eq $lease.HostName) { "" } else { $lease.HostName.ToString() }
ClientId = if ($null -eq $lease.ClientId) { "" } else { $lease.ClientId.ToString() }
AddressState = if ($null -eq $lease.AddressState) { "" } else { $lease.AddressState.ToString() }
LeaseExpiryTime = $expiry
}
}
} -ErrorAction Stop
)
}
# ============================================================
# NORMALIZATION / SORTING
# ============================================================
function Convert-LeaseExpiry {
param($Value)
if ($null -eq $Value -or [string]::IsNullOrWhiteSpace($Value.ToString())) {
return $null
}
if ($Value -is [datetime]) {
return $Value
}
$parsed = [datetime]::MinValue
if ([datetime]::TryParse(
$Value.ToString(),
[System.Globalization.CultureInfo]::InvariantCulture,
[System.Globalization.DateTimeStyles]::RoundtripKind,
[ref]$parsed
)) {
return $parsed
}
if ([datetime]::TryParse($Value.ToString(), [ref]$parsed)) {
return $parsed
}
return $null
}
function Get-IPv4SortKey {
param([string]$IPAddress)
try {
$bytes = [System.Net.IPAddress]::Parse($IPAddress).GetAddressBytes()
if ($bytes.Count -ne 4) {
return [uint64]::MaxValue
}
return (
([uint64]$bytes[0] -shl 24) -bor
([uint64]$bytes[1] -shl 16) -bor
([uint64]$bytes[2] -shl 8) -bor
([uint64]$bytes[3])
)
}
catch {
return [uint64]::MaxValue
}
}
# ============================================================
# SCOPE FUNCTIONS
# ============================================================
function Test-DhcpScope {
param (
[Parameter(Mandatory)]
[string]$ScopeId
)
try {
[void](Get-DhcpScopeData -ScopeId $ScopeId)
return $true
}
catch {
return $false
}
}
function Show-ScopeSummary {
param (
[Parameter(Mandatory)]
[string]$ScopeId
)
try {
$scope = Get-DhcpScopeData -ScopeId $ScopeId
$stats = Get-DhcpStatisticsData -ScopeId $ScopeId
Write-Host
Write-Host "Summary Scope" -ForegroundColor Yellow
Write-Host "---------------------------------------------------"
[PSCustomObject]@{
ScopeId = $scope.ScopeId
Name = $scope.Name
State = $scope.State
StartRange = $scope.StartRange
EndRange = $scope.EndRange
SubnetMask = $scope.SubnetMask
LeaseDuration = $scope.LeaseDuration
Free = $stats.Free
InUse = $stats.InUse
PercentageInUse = ("{0:N2}%" -f [double]$stats.PercentageInUse)
Reserved = $stats.Reserved
Pending = $stats.Pending
SuperscopeName = $stats.SuperscopeName
} | Format-List | Out-Host
Write-Host "---------------------------------------------------"
if ([double]$stats.PercentageInUse -ge 95) {
Write-Host "WARNING: Scope hampir penuh!" -ForegroundColor Red
}
elseif ([double]$stats.PercentageInUse -ge 80) {
Write-Host "WARNING: Pemakaian scope sudah tinggi." -ForegroundColor Yellow
}
else {
Write-Host "Status kapasitas scope masih aman." -ForegroundColor Green
}
Write-Host
}
catch {
Write-Host
Write-Host "Gagal membaca Scope $ScopeId." -ForegroundColor Red
Write-Host $_.Exception.Message -ForegroundColor DarkRed
Write-Host
}
}
# ============================================================
# DEVICE / LEASE LIST
# ============================================================
function Show-ScopeClients {
param (
[Parameter(Mandatory)]
[string]$ScopeId
)
Clear-Host
Write-Host "===================================================" -ForegroundColor Cyan
Write-Host " DHCP Lease / Device List" -ForegroundColor Cyan
Write-Host "===================================================" -ForegroundColor Cyan
Write-Host
Write-Host "ScopeId : $ScopeId" -ForegroundColor Yellow
Write-Host
try {
$leases = @(Get-DhcpLeaseData -ScopeId $ScopeId)
if ($leases.Count -eq 0) {
Write-Host "Tidak ada lease yang dikembalikan untuk scope ini." -ForegroundColor Yellow
Write-Host
return
}
$normalized = @(
foreach ($lease in $leases) {
[PSCustomObject]@{
IPAddress = $lease.IPAddress
HostName = $lease.HostName
ClientId = $lease.ClientId
AddressState = $lease.AddressState
LeaseExpiryTime = Convert-LeaseExpiry $lease.LeaseExpiryTime
}
}
)
$normalized |
Sort-Object @{ Expression = { Get-IPv4SortKey $_.IPAddress } } |
Select-Object IPAddress, HostName, ClientId, AddressState, LeaseExpiryTime |
Format-Table -AutoSize |
Out-Host
Write-Host
Write-Host "---------------------------------------------------"
Write-Host "Total lease : $($normalized.Count)" -ForegroundColor Cyan
$activeCount = @(
$normalized | Where-Object { $_.AddressState -match '^Active' }
).Count
Write-Host "Active lease: $activeCount" -ForegroundColor Green
Write-Host "---------------------------------------------------"
Write-Host
}
catch {
Write-Host
Write-Host "Gagal membaca daftar lease." -ForegroundColor Red
Write-Host $_.Exception.Message -ForegroundColor DarkRed
Write-Host
}
}
# ============================================================
# LEASE ANALYSIS
# ============================================================
function Show-LeaseAnalysis {
param (
[Parameter(Mandatory)]
[string]$ScopeId
)
Clear-Host
Write-Host "===================================================" -ForegroundColor Cyan
Write-Host " DHCP Lease Analysis" -ForegroundColor Cyan
Write-Host "===================================================" -ForegroundColor Cyan
Write-Host
Write-Host "ScopeId : $ScopeId" -ForegroundColor Yellow
Write-Host
try {
$now = Get-Date
$scope = Get-DhcpScopeData -ScopeId $ScopeId
$stats = Get-DhcpStatisticsData -ScopeId $ScopeId
$rawLeases = @(Get-DhcpLeaseData -ScopeId $ScopeId)
$leases = @(
foreach ($lease in $rawLeases) {
[PSCustomObject]@{
IPAddress = $lease.IPAddress
HostName = $lease.HostName
ClientId = $lease.ClientId
AddressState = $lease.AddressState
LeaseExpiryTime = Convert-LeaseExpiry $lease.LeaseExpiryTime
}
}
)
$leasesWithExpiry = @(
$leases | Where-Object { $null -ne $_.LeaseExpiryTime }
)
$expired = @(
$leasesWithExpiry |
Where-Object { $_.LeaseExpiryTime -lt $now }
).Count
$expireWithin4Hour = @(
$leasesWithExpiry |
Where-Object {
$_.LeaseExpiryTime -ge $now -and
$_.LeaseExpiryTime -le $now.AddHours(4)
}
).Count
$beyond4Hour = @(
$leasesWithExpiry |
Where-Object { $_.LeaseExpiryTime -gt $now.AddHours(4) }
).Count
Write-Host "Waktu Pemeriksaan : $now"
Write-Host "Lease Duration : $($scope.LeaseDuration)"
Write-Host
Write-Host "Pool Statistics" -ForegroundColor Yellow
Write-Host "---------------------------------------------------"
[PSCustomObject]@{
Free = $stats.Free
InUse = $stats.InUse
PercentageInUse = ("{0:N2}%" -f [double]$stats.PercentageInUse)
Reserved = $stats.Reserved
Pending = $stats.Pending
} | Format-List | Out-Host
Write-Host
Write-Host "Lease Expiration Analysis" -ForegroundColor Yellow
Write-Host "---------------------------------------------------"
[PSCustomObject]@{
TotalLease = $leases.Count
WithExpiry = $leasesWithExpiry.Count
Expired = $expired
ExpireWithin4Hour = $expireWithin4Hour
Beyond4Hour = $beyond4Hour
} | Format-Table -AutoSize | Out-Host
Write-Host
Write-Host "Interpretasi" -ForegroundColor Yellow
Write-Host "---------------------------------------------------"
if ([double]$stats.PercentageInUse -ge 95) {
Write-Host "Kapasitas scope : KRITIS (>=95%)." -ForegroundColor Red
}
elseif ([double]$stats.PercentageInUse -ge 80) {
Write-Host "Kapasitas scope : TINGGI (>=80%)." -ForegroundColor Yellow
}
else {
Write-Host "Kapasitas scope : AMAN (<80%)." -ForegroundColor Green
}
if ($leasesWithExpiry.Count -gt 0) {
if ($beyond4Hour -gt ($leasesWithExpiry.Count / 2)) {
Write-Host "Mayoritas lease masih memiliki expiry lebih dari 4 jam." -ForegroundColor Yellow
Write-Host "Kemungkinan masih banyak lease lama dari konfigurasi sebelumnya."
}
else {
Write-Host "Mayoritas lease sudah berada dalam window 4 jam." -ForegroundColor Green
}
}
else {
Write-Host "Tidak ada data expiry lease yang dapat dianalisis." -ForegroundColor Yellow
}
Write-Host
}
catch {
Write-Host
Write-Host "Gagal melakukan Lease Analysis." -ForegroundColor Red
Write-Host $_.Exception.Message -ForegroundColor DarkRed
Write-Host
}
}
# ============================================================
# MAIN PROGRAM
# ============================================================
try {
Connect-DhcpBackend
while ($true) {
Show-Title
if (-not (Test-DhcpSession)) {
throw "PowerShell remote session tidak lagi dalam state Opened."
}
Write-Host "Masukkan ScopeId yang ingin diperiksa." -ForegroundColor Green
Write-Host "Contoh: 10.110.114.0"
Write-Host
Write-Host "Ketik 0 untuk keluar."
Write-Host
$ScopeId = Read-Host "ScopeId"
if ($ScopeId -eq "0") {
break
}
if ([string]::IsNullOrWhiteSpace($ScopeId)) {
Write-Host
Write-Host "ScopeId tidak boleh kosong." -ForegroundColor Red
Write-Host
Wait-Enter
continue
}
if (-not (Test-DhcpScope -ScopeId $ScopeId)) {
Write-Host
Write-Host "ScopeId '$ScopeId' tidak ditemukan atau tidak dapat dibaca." -ForegroundColor Red
Write-Host
Wait-Enter "Tekan ENTER untuk mencoba lagi"
continue
}
$changeScope = $false
while (-not $changeScope) {
Show-Title
Show-ScopeSummary -ScopeId $ScopeId
Write-Host "Apa yang ingin dilakukan?" -ForegroundColor Green
Write-Host
Write-Host "[1] Tampilkan daftar lease / perangkat"
Write-Host "[2] Lease Analysis"
Write-Host "[3] Cek ScopeId lain"
Write-Host "[4] Refresh summary scope ini"
Write-Host "[0] Keluar"
Write-Host
$choice = Read-Host "Pilihan"
switch ($choice) {
"1" {
Show-ScopeClients -ScopeId $ScopeId
$clientMenu = $true
while ($clientMenu) {
Write-Host "Apa yang ingin dilakukan selanjutnya?" -ForegroundColor Green
Write-Host
Write-Host "[1] Kembali ke summary scope ini"
Write-Host "[2] Lease Analysis"
Write-Host "[3] Cek ScopeId lain"
Write-Host "[4] Refresh daftar lease"
Write-Host "[0] Keluar"
Write-Host
$subChoice = Read-Host "Pilihan"
switch ($subChoice) {
"1" {
$clientMenu = $false
}
"2" {
Show-LeaseAnalysis -ScopeId $ScopeId
Write-Host
Wait-Enter "Tekan ENTER untuk kembali"
$clientMenu = $false
}
"3" {
$clientMenu = $false
$changeScope = $true
}
"4" {
Show-ScopeClients -ScopeId $ScopeId
}
"0" {
return
}
default {
Write-Host
Write-Host "Pilihan tidak valid." -ForegroundColor Red
Write-Host
}
}
}
}
"2" {
Show-LeaseAnalysis -ScopeId $ScopeId
$analysisMenu = $true
while ($analysisMenu) {
Write-Host "Apa yang ingin dilakukan selanjutnya?" -ForegroundColor Green
Write-Host
Write-Host "[1] Kembali ke summary scope ini"
Write-Host "[2] Tampilkan daftar lease / perangkat"
Write-Host "[3] Cek ScopeId lain"
Write-Host "[4] Refresh Lease Analysis"
Write-Host "[0] Keluar"
Write-Host
$subChoice = Read-Host "Pilihan"
switch ($subChoice) {
"1" {
$analysisMenu = $false
}
"2" {
Show-ScopeClients -ScopeId $ScopeId
Write-Host
Wait-Enter "Tekan ENTER untuk kembali"
$analysisMenu = $false
}
"3" {
$analysisMenu = $false
$changeScope = $true
}
"4" {
Show-LeaseAnalysis -ScopeId $ScopeId
}
"0" {
return
}
default {
Write-Host
Write-Host "Pilihan tidak valid." -ForegroundColor Red
Write-Host
}
}
}
}
"3" {
$changeScope = $true
}
"4" {
# Loop refreshes summary.
}
"0" {
return
}
default {
Write-Host
Write-Host "Pilihan tidak valid." -ForegroundColor Red
Start-Sleep -Seconds 1
}
}
}
}
}
catch {
Write-Host
Write-Host "FATAL ERROR" -ForegroundColor Red
Write-Host "---------------------------------------------------"
Write-Host $_.Exception.Message -ForegroundColor Red
Write-Host
exit 1
}
finally {
Disconnect-DhcpBackend
Write-Host
Write-Host "Keluar dari Universal DHCP Scope Monitoring Utility." -ForegroundColor Cyan
Write-Host
}
| 1 | #requires -Version 7.0 |
| 2 | <# |
| 3 | .SYNOPSIS |
| 4 | Universal DHCP Scope Monitoring Utility |
| 5 | |
| 6 | .DESCRIPTION |
| 7 | Cross-platform DHCP monitoring utility for: |
| 8 | - Windows |
| 9 | - macOS |
| 10 | - Linux (including Debian) |
| 11 | |
| 12 | Execution modes: |
| 13 | 1. LOCAL : On Windows with the DhcpServer module available. |
| 14 | 2. REMOTE : On Windows/macOS/Linux using PowerShell Remoting over SSH |
| 15 | to a Windows DHCP Server. |
| 16 | |
| 17 | Remote DHCP objects are flattened on the Windows server before being |
| 18 | returned to non-Windows clients, avoiding CIM/MI serialization issues |
| 19 | such as libmi errors on macOS/Linux. |
| 20 | |
| 21 | .EXAMPLE |
| 22 | pwsh ./dhcp-monitor-universal.ps1 |
| 23 | |
| 24 | On macOS/Linux (or Windows without the local DhcpServer module), the |
| 25 | script asks for the DHCP Server hostname/IP and SSH username. |
| 26 | |
| 27 | .EXAMPLE |
| 28 | pwsh ./dhcp-monitor-universal.ps1 -DhcpServer 192.168.1.10 -UserName "CONTOSO\\administrator" |
| 29 | |
| 30 | Skips the interactive server/username questions. |
| 31 | |
| 32 | .EXAMPLE |
| 33 | pwsh ./dhcp-monitor-universal.ps1 -Mode Local |
| 34 | |
| 35 | Forces Local mode. Requires Windows and the DhcpServer module. |
| 36 | |
| 37 | .NOTES |
| 38 | In Remote mode, the script interactively asks for: |
| 39 | - DHCP Server hostname or IP address |
| 40 | - SSH username |
| 41 | #> |
| 42 | |
| 43 | param ( |
| 44 | [string]$DhcpServer, |
| 45 | [string]$UserName, |
| 46 | [ValidateSet("Auto", "Local", "Remote")] |
| 47 | [string]$Mode = "Auto" |
| 48 | ) |
| 49 | |
| 50 | $ErrorActionPreference = "Stop" |
| 51 | $script:DhcpSession = $null |
| 52 | $script:ExecutionMode = $null |
| 53 | $script:DhcpServer = $DhcpServer |
| 54 | $script:UserName = $UserName |
| 55 | |
| 56 | # ============================================================ |
| 57 | # UI HELPERS |
| 58 | # ============================================================ |
| 59 | |
| 60 | function Show-Title { |
| 61 | Clear-Host |
| 62 | Write-Host "===================================================" -ForegroundColor Cyan |
| 63 | Write-Host " Universal DHCP Scope Monitoring Utility" -ForegroundColor Cyan |
| 64 | Write-Host "===================================================" -ForegroundColor Cyan |
| 65 | Write-Host |
| 66 | Write-Host "Client OS : $([System.Runtime.InteropServices.RuntimeInformation]::OSDescription)" |
| 67 | Write-Host "Mode : $script:ExecutionMode" |
| 68 | if ($script:ExecutionMode -eq "Remote") { |
| 69 | Write-Host "DHCP Server : $script:DhcpServer" |
| 70 | Write-Host "SSH User : $script:UserName" |
| 71 | } |
| 72 | Write-Host |
| 73 | } |
| 74 | |
| 75 | function Wait-Enter { |
| 76 | param([string]$Message = "Tekan ENTER untuk melanjutkan") |
| 77 | [void](Read-Host $Message) |
| 78 | } |
| 79 | |
| 80 | function Convert-ToDisplayString { |
| 81 | param($Value) |
| 82 | if ($null -eq $Value) { return "" } |
| 83 | return $Value.ToString() |
| 84 | } |
| 85 | |
| 86 | # ============================================================ |
| 87 | # CONNECTION / EXECUTION MODE |
| 88 | # ============================================================ |
| 89 | |
| 90 | function Test-LocalDhcpModule { |
| 91 | if (-not $IsWindows) { |
| 92 | return $false |
| 93 | } |
| 94 | |
| 95 | return [bool](Get-Module -ListAvailable -Name DhcpServer) |
| 96 | } |
| 97 | |
| 98 | function Connect-DhcpBackend { |
| 99 | if ($Mode -eq "Local") { |
| 100 | if (-not (Test-LocalDhcpModule)) { |
| 101 | throw "Mode Local dipilih, tetapi module DhcpServer tidak tersedia." |
| 102 | } |
| 103 | |
| 104 | Import-Module DhcpServer -ErrorAction Stop |
| 105 | $script:ExecutionMode = "Local" |
| 106 | return |
| 107 | } |
| 108 | |
| 109 | if ($Mode -eq "Auto" -and (Test-LocalDhcpModule)) { |
| 110 | Import-Module DhcpServer -ErrorAction Stop |
| 111 | $script:ExecutionMode = "Local" |
| 112 | return |
| 113 | } |
| 114 | |
| 115 | $script:ExecutionMode = "Remote" |
| 116 | |
| 117 | Write-Host |
| 118 | Write-Host "Remote DHCP Server Configuration" -ForegroundColor Cyan |
| 119 | Write-Host "---------------------------------------------------" |
| 120 | |
| 121 | while ([string]::IsNullOrWhiteSpace($script:DhcpServer)) { |
| 122 | $script:DhcpServer = Read-Host "DHCP Server hostname / IP" |
| 123 | if ([string]::IsNullOrWhiteSpace($script:DhcpServer)) { |
| 124 | Write-Host "DHCP Server tidak boleh kosong." -ForegroundColor Red |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | while ([string]::IsNullOrWhiteSpace($script:UserName)) { |
| 129 | $script:UserName = Read-Host "SSH username (contoh: DOMAIN\administrator)" |
| 130 | if ([string]::IsNullOrWhiteSpace($script:UserName)) { |
| 131 | Write-Host "Username tidak boleh kosong." -ForegroundColor Red |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | Write-Host |
| 136 | Write-Host "Menghubungkan ke Windows DHCP Server..." -ForegroundColor Cyan |
| 137 | Write-Host "Server : $script:DhcpServer" |
| 138 | Write-Host "User : $script:UserName" |
| 139 | Write-Host |
| 140 | |
| 141 | try { |
| 142 | $script:DhcpSession = New-PSSession ` |
| 143 | -HostName $script:DhcpServer ` |
| 144 | -UserName $script:UserName ` |
| 145 | -ErrorAction Stop |
| 146 | |
| 147 | Write-Host "Koneksi berhasil." -ForegroundColor Green |
| 148 | Start-Sleep -Milliseconds 700 |
| 149 | } |
| 150 | catch { |
| 151 | throw "Gagal membuat PowerShell SSH session ke $script:DhcpServer. $($_.Exception.Message)" |
| 152 | } |
| 153 | } |
| 154 | |
| 155 | function Disconnect-DhcpBackend { |
| 156 | if ($null -ne $script:DhcpSession) { |
| 157 | try { |
| 158 | Remove-PSSession -Session $script:DhcpSession -ErrorAction SilentlyContinue |
| 159 | } |
| 160 | catch {} |
| 161 | $script:DhcpSession = $null |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | function Test-DhcpSession { |
| 166 | if ($script:ExecutionMode -ne "Remote") { |
| 167 | return $true |
| 168 | } |
| 169 | |
| 170 | if ($null -eq $script:DhcpSession) { |
| 171 | return $false |
| 172 | } |
| 173 | |
| 174 | return ($script:DhcpSession.State -eq "Opened") |
| 175 | } |
| 176 | |
| 177 | # ============================================================ |
| 178 | # DATA ACCESS LAYER |
| 179 | # ============================================================ |
| 180 | |
| 181 | function Get-DhcpScopeData { |
| 182 | param ( |
| 183 | [Parameter(Mandatory)] |
| 184 | [string]$ScopeId |
| 185 | ) |
| 186 | |
| 187 | if ($script:ExecutionMode -eq "Local") { |
| 188 | $s = Get-DhcpServerv4Scope -ScopeId $ScopeId -ErrorAction Stop |
| 189 | |
| 190 | return [PSCustomObject]@{ |
| 191 | ScopeId = Convert-ToDisplayString $s.ScopeId |
| 192 | Name = $s.Name |
| 193 | State = Convert-ToDisplayString $s.State |
| 194 | StartRange = Convert-ToDisplayString $s.StartRange |
| 195 | EndRange = Convert-ToDisplayString $s.EndRange |
| 196 | SubnetMask = Convert-ToDisplayString $s.SubnetMask |
| 197 | LeaseDuration = Convert-ToDisplayString $s.LeaseDuration |
| 198 | } |
| 199 | } |
| 200 | |
| 201 | return Invoke-Command -Session $script:DhcpSession -ArgumentList $ScopeId -ScriptBlock { |
| 202 | param($RemoteScopeId) |
| 203 | |
| 204 | $s = Get-DhcpServerv4Scope -ScopeId $RemoteScopeId -ErrorAction Stop |
| 205 | |
| 206 | [PSCustomObject]@{ |
| 207 | ScopeId = if ($null -eq $s.ScopeId) { "" } else { $s.ScopeId.ToString() } |
| 208 | Name = $s.Name |
| 209 | State = if ($null -eq $s.State) { "" } else { $s.State.ToString() } |
| 210 | StartRange = if ($null -eq $s.StartRange) { "" } else { $s.StartRange.ToString() } |
| 211 | EndRange = if ($null -eq $s.EndRange) { "" } else { $s.EndRange.ToString() } |
| 212 | SubnetMask = if ($null -eq $s.SubnetMask) { "" } else { $s.SubnetMask.ToString() } |
| 213 | LeaseDuration = if ($null -eq $s.LeaseDuration) { "" } else { $s.LeaseDuration.ToString() } |
| 214 | } |
| 215 | } -ErrorAction Stop |
| 216 | } |
| 217 | |
| 218 | function Get-DhcpStatisticsData { |
| 219 | param ( |
| 220 | [Parameter(Mandatory)] |
| 221 | [string]$ScopeId |
| 222 | ) |
| 223 | |
| 224 | if ($script:ExecutionMode -eq "Local") { |
| 225 | $s = Get-DhcpServerv4ScopeStatistics -ScopeId $ScopeId -ErrorAction Stop |
| 226 | |
| 227 | return [PSCustomObject]@{ |
| 228 | Free = [long]$s.Free |
| 229 | InUse = [long]$s.InUse |
| 230 | PercentageInUse = [double]$s.PercentageInUse |
| 231 | Reserved = [long]$s.Reserved |
| 232 | Pending = [long]$s.Pending |
| 233 | SuperscopeName = Convert-ToDisplayString $s.SuperscopeName |
| 234 | } |
| 235 | } |
| 236 | |
| 237 | return Invoke-Command -Session $script:DhcpSession -ArgumentList $ScopeId -ScriptBlock { |
| 238 | param($RemoteScopeId) |
| 239 | |
| 240 | $s = Get-DhcpServerv4ScopeStatistics -ScopeId $RemoteScopeId -ErrorAction Stop |
| 241 | |
| 242 | [PSCustomObject]@{ |
| 243 | Free = [long]$s.Free |
| 244 | InUse = [long]$s.InUse |
| 245 | PercentageInUse = [double]$s.PercentageInUse |
| 246 | Reserved = [long]$s.Reserved |
| 247 | Pending = [long]$s.Pending |
| 248 | SuperscopeName = if ($null -eq $s.SuperscopeName) { "" } else { $s.SuperscopeName.ToString() } |
| 249 | } |
| 250 | } -ErrorAction Stop |
| 251 | } |
| 252 | |
| 253 | function Get-DhcpLeaseData { |
| 254 | param ( |
| 255 | [Parameter(Mandatory)] |
| 256 | [string]$ScopeId |
| 257 | ) |
| 258 | |
| 259 | if ($script:ExecutionMode -eq "Local") { |
| 260 | $raw = @(Get-DhcpServerv4Lease -ScopeId $ScopeId -ErrorAction Stop) |
| 261 | |
| 262 | return @( |
| 263 | foreach ($lease in $raw) { |
| 264 | [PSCustomObject]@{ |
| 265 | IPAddress = Convert-ToDisplayString $lease.IPAddress |
| 266 | HostName = Convert-ToDisplayString $lease.HostName |
| 267 | ClientId = Convert-ToDisplayString $lease.ClientId |
| 268 | AddressState = Convert-ToDisplayString $lease.AddressState |
| 269 | LeaseExpiryTime = $lease.LeaseExpiryTime |
| 270 | } |
| 271 | } |
| 272 | ) |
| 273 | } |
| 274 | |
| 275 | # IMPORTANT: |
| 276 | # Materialize the DHCP CIM result first, then flatten every property |
| 277 | # while still executing on Windows. This prevents libmi/CIM objects |
| 278 | # from crossing the SSH remoting boundary. |
| 279 | return @( |
| 280 | Invoke-Command -Session $script:DhcpSession -ArgumentList $ScopeId -ScriptBlock { |
| 281 | param($RemoteScopeId) |
| 282 | |
| 283 | $rawLeases = @(Get-DhcpServerv4Lease -ScopeId $RemoteScopeId -ErrorAction Stop) |
| 284 | |
| 285 | foreach ($lease in $rawLeases) { |
| 286 | $expiry = $null |
| 287 | |
| 288 | if ($null -ne $lease.LeaseExpiryTime) { |
| 289 | try { |
| 290 | $expiry = $lease.LeaseExpiryTime.ToString("o") |
| 291 | } |
| 292 | catch { |
| 293 | $expiry = $lease.LeaseExpiryTime.ToString() |
| 294 | } |
| 295 | } |
| 296 | |
| 297 | [PSCustomObject]@{ |
| 298 | IPAddress = if ($null -eq $lease.IPAddress) { "" } else { $lease.IPAddress.ToString() } |
| 299 | HostName = if ($null -eq $lease.HostName) { "" } else { $lease.HostName.ToString() } |
| 300 | ClientId = if ($null -eq $lease.ClientId) { "" } else { $lease.ClientId.ToString() } |
| 301 | AddressState = if ($null -eq $lease.AddressState) { "" } else { $lease.AddressState.ToString() } |
| 302 | LeaseExpiryTime = $expiry |
| 303 | } |
| 304 | } |
| 305 | } -ErrorAction Stop |
| 306 | ) |
| 307 | } |
| 308 | |
| 309 | # ============================================================ |
| 310 | # NORMALIZATION / SORTING |
| 311 | # ============================================================ |
| 312 | |
| 313 | function Convert-LeaseExpiry { |
| 314 | param($Value) |
| 315 | |
| 316 | if ($null -eq $Value -or [string]::IsNullOrWhiteSpace($Value.ToString())) { |
| 317 | return $null |
| 318 | } |
| 319 | |
| 320 | if ($Value -is [datetime]) { |
| 321 | return $Value |
| 322 | } |
| 323 | |
| 324 | $parsed = [datetime]::MinValue |
| 325 | |
| 326 | if ([datetime]::TryParse( |
| 327 | $Value.ToString(), |
| 328 | [System.Globalization.CultureInfo]::InvariantCulture, |
| 329 | [System.Globalization.DateTimeStyles]::RoundtripKind, |
| 330 | [ref]$parsed |
| 331 | )) { |
| 332 | return $parsed |
| 333 | } |
| 334 | |
| 335 | if ([datetime]::TryParse($Value.ToString(), [ref]$parsed)) { |
| 336 | return $parsed |
| 337 | } |
| 338 | |
| 339 | return $null |
| 340 | } |
| 341 | |
| 342 | function Get-IPv4SortKey { |
| 343 | param([string]$IPAddress) |
| 344 | |
| 345 | try { |
| 346 | $bytes = [System.Net.IPAddress]::Parse($IPAddress).GetAddressBytes() |
| 347 | if ($bytes.Count -ne 4) { |
| 348 | return [uint64]::MaxValue |
| 349 | } |
| 350 | |
| 351 | return ( |
| 352 | ([uint64]$bytes[0] -shl 24) -bor |
| 353 | ([uint64]$bytes[1] -shl 16) -bor |
| 354 | ([uint64]$bytes[2] -shl 8) -bor |
| 355 | ([uint64]$bytes[3]) |
| 356 | ) |
| 357 | } |
| 358 | catch { |
| 359 | return [uint64]::MaxValue |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | # ============================================================ |
| 364 | # SCOPE FUNCTIONS |
| 365 | # ============================================================ |
| 366 | |
| 367 | function Test-DhcpScope { |
| 368 | param ( |
| 369 | [Parameter(Mandatory)] |
| 370 | [string]$ScopeId |
| 371 | ) |
| 372 | |
| 373 | try { |
| 374 | [void](Get-DhcpScopeData -ScopeId $ScopeId) |
| 375 | return $true |
| 376 | } |
| 377 | catch { |
| 378 | return $false |
| 379 | } |
| 380 | } |
| 381 | |
| 382 | function Show-ScopeSummary { |
| 383 | param ( |
| 384 | [Parameter(Mandatory)] |
| 385 | [string]$ScopeId |
| 386 | ) |
| 387 | |
| 388 | try { |
| 389 | $scope = Get-DhcpScopeData -ScopeId $ScopeId |
| 390 | $stats = Get-DhcpStatisticsData -ScopeId $ScopeId |
| 391 | |
| 392 | Write-Host |
| 393 | Write-Host "Summary Scope" -ForegroundColor Yellow |
| 394 | Write-Host "---------------------------------------------------" |
| 395 | |
| 396 | [PSCustomObject]@{ |
| 397 | ScopeId = $scope.ScopeId |
| 398 | Name = $scope.Name |
| 399 | State = $scope.State |
| 400 | StartRange = $scope.StartRange |
| 401 | EndRange = $scope.EndRange |
| 402 | SubnetMask = $scope.SubnetMask |
| 403 | LeaseDuration = $scope.LeaseDuration |
| 404 | Free = $stats.Free |
| 405 | InUse = $stats.InUse |
| 406 | PercentageInUse = ("{0:N2}%" -f [double]$stats.PercentageInUse) |
| 407 | Reserved = $stats.Reserved |
| 408 | Pending = $stats.Pending |
| 409 | SuperscopeName = $stats.SuperscopeName |
| 410 | } | Format-List | Out-Host |
| 411 | |
| 412 | Write-Host "---------------------------------------------------" |
| 413 | |
| 414 | if ([double]$stats.PercentageInUse -ge 95) { |
| 415 | Write-Host "WARNING: Scope hampir penuh!" -ForegroundColor Red |
| 416 | } |
| 417 | elseif ([double]$stats.PercentageInUse -ge 80) { |
| 418 | Write-Host "WARNING: Pemakaian scope sudah tinggi." -ForegroundColor Yellow |
| 419 | } |
| 420 | else { |
| 421 | Write-Host "Status kapasitas scope masih aman." -ForegroundColor Green |
| 422 | } |
| 423 | |
| 424 | Write-Host |
| 425 | } |
| 426 | catch { |
| 427 | Write-Host |
| 428 | Write-Host "Gagal membaca Scope $ScopeId." -ForegroundColor Red |
| 429 | Write-Host $_.Exception.Message -ForegroundColor DarkRed |
| 430 | Write-Host |
| 431 | } |
| 432 | } |
| 433 | |
| 434 | # ============================================================ |
| 435 | # DEVICE / LEASE LIST |
| 436 | # ============================================================ |
| 437 | |
| 438 | function Show-ScopeClients { |
| 439 | param ( |
| 440 | [Parameter(Mandatory)] |
| 441 | [string]$ScopeId |
| 442 | ) |
| 443 | |
| 444 | Clear-Host |
| 445 | |
| 446 | Write-Host "===================================================" -ForegroundColor Cyan |
| 447 | Write-Host " DHCP Lease / Device List" -ForegroundColor Cyan |
| 448 | Write-Host "===================================================" -ForegroundColor Cyan |
| 449 | Write-Host |
| 450 | Write-Host "ScopeId : $ScopeId" -ForegroundColor Yellow |
| 451 | Write-Host |
| 452 | |
| 453 | try { |
| 454 | $leases = @(Get-DhcpLeaseData -ScopeId $ScopeId) |
| 455 | |
| 456 | if ($leases.Count -eq 0) { |
| 457 | Write-Host "Tidak ada lease yang dikembalikan untuk scope ini." -ForegroundColor Yellow |
| 458 | Write-Host |
| 459 | return |
| 460 | } |
| 461 | |
| 462 | $normalized = @( |
| 463 | foreach ($lease in $leases) { |
| 464 | [PSCustomObject]@{ |
| 465 | IPAddress = $lease.IPAddress |
| 466 | HostName = $lease.HostName |
| 467 | ClientId = $lease.ClientId |
| 468 | AddressState = $lease.AddressState |
| 469 | LeaseExpiryTime = Convert-LeaseExpiry $lease.LeaseExpiryTime |
| 470 | } |
| 471 | } |
| 472 | ) |
| 473 | |
| 474 | $normalized | |
| 475 | Sort-Object @{ Expression = { Get-IPv4SortKey $_.IPAddress } } | |
| 476 | Select-Object IPAddress, HostName, ClientId, AddressState, LeaseExpiryTime | |
| 477 | Format-Table -AutoSize | |
| 478 | Out-Host |
| 479 | |
| 480 | Write-Host |
| 481 | Write-Host "---------------------------------------------------" |
| 482 | Write-Host "Total lease : $($normalized.Count)" -ForegroundColor Cyan |
| 483 | |
| 484 | $activeCount = @( |
| 485 | $normalized | Where-Object { $_.AddressState -match '^Active' } |
| 486 | ).Count |
| 487 | |
| 488 | Write-Host "Active lease: $activeCount" -ForegroundColor Green |
| 489 | Write-Host "---------------------------------------------------" |
| 490 | Write-Host |
| 491 | } |
| 492 | catch { |
| 493 | Write-Host |
| 494 | Write-Host "Gagal membaca daftar lease." -ForegroundColor Red |
| 495 | Write-Host $_.Exception.Message -ForegroundColor DarkRed |
| 496 | Write-Host |
| 497 | } |
| 498 | } |
| 499 | |
| 500 | # ============================================================ |
| 501 | # LEASE ANALYSIS |
| 502 | # ============================================================ |
| 503 | |
| 504 | function Show-LeaseAnalysis { |
| 505 | param ( |
| 506 | [Parameter(Mandatory)] |
| 507 | [string]$ScopeId |
| 508 | ) |
| 509 | |
| 510 | Clear-Host |
| 511 | |
| 512 | Write-Host "===================================================" -ForegroundColor Cyan |
| 513 | Write-Host " DHCP Lease Analysis" -ForegroundColor Cyan |
| 514 | Write-Host "===================================================" -ForegroundColor Cyan |
| 515 | Write-Host |
| 516 | Write-Host "ScopeId : $ScopeId" -ForegroundColor Yellow |
| 517 | Write-Host |
| 518 | |
| 519 | try { |
| 520 | $now = Get-Date |
| 521 | $scope = Get-DhcpScopeData -ScopeId $ScopeId |
| 522 | $stats = Get-DhcpStatisticsData -ScopeId $ScopeId |
| 523 | $rawLeases = @(Get-DhcpLeaseData -ScopeId $ScopeId) |
| 524 | |
| 525 | $leases = @( |
| 526 | foreach ($lease in $rawLeases) { |
| 527 | [PSCustomObject]@{ |
| 528 | IPAddress = $lease.IPAddress |
| 529 | HostName = $lease.HostName |
| 530 | ClientId = $lease.ClientId |
| 531 | AddressState = $lease.AddressState |
| 532 | LeaseExpiryTime = Convert-LeaseExpiry $lease.LeaseExpiryTime |
| 533 | } |
| 534 | } |
| 535 | ) |
| 536 | |
| 537 | $leasesWithExpiry = @( |
| 538 | $leases | Where-Object { $null -ne $_.LeaseExpiryTime } |
| 539 | ) |
| 540 | |
| 541 | $expired = @( |
| 542 | $leasesWithExpiry | |
| 543 | Where-Object { $_.LeaseExpiryTime -lt $now } |
| 544 | ).Count |
| 545 | |
| 546 | $expireWithin4Hour = @( |
| 547 | $leasesWithExpiry | |
| 548 | Where-Object { |
| 549 | $_.LeaseExpiryTime -ge $now -and |
| 550 | $_.LeaseExpiryTime -le $now.AddHours(4) |
| 551 | } |
| 552 | ).Count |
| 553 | |
| 554 | $beyond4Hour = @( |
| 555 | $leasesWithExpiry | |
| 556 | Where-Object { $_.LeaseExpiryTime -gt $now.AddHours(4) } |
| 557 | ).Count |
| 558 | |
| 559 | Write-Host "Waktu Pemeriksaan : $now" |
| 560 | Write-Host "Lease Duration : $($scope.LeaseDuration)" |
| 561 | Write-Host |
| 562 | |
| 563 | Write-Host "Pool Statistics" -ForegroundColor Yellow |
| 564 | Write-Host "---------------------------------------------------" |
| 565 | |
| 566 | [PSCustomObject]@{ |
| 567 | Free = $stats.Free |
| 568 | InUse = $stats.InUse |
| 569 | PercentageInUse = ("{0:N2}%" -f [double]$stats.PercentageInUse) |
| 570 | Reserved = $stats.Reserved |
| 571 | Pending = $stats.Pending |
| 572 | } | Format-List | Out-Host |
| 573 | |
| 574 | Write-Host |
| 575 | Write-Host "Lease Expiration Analysis" -ForegroundColor Yellow |
| 576 | Write-Host "---------------------------------------------------" |
| 577 | |
| 578 | [PSCustomObject]@{ |
| 579 | TotalLease = $leases.Count |
| 580 | WithExpiry = $leasesWithExpiry.Count |
| 581 | Expired = $expired |
| 582 | ExpireWithin4Hour = $expireWithin4Hour |
| 583 | Beyond4Hour = $beyond4Hour |
| 584 | } | Format-Table -AutoSize | Out-Host |
| 585 | |
| 586 | Write-Host |
| 587 | Write-Host "Interpretasi" -ForegroundColor Yellow |
| 588 | Write-Host "---------------------------------------------------" |
| 589 | |
| 590 | if ([double]$stats.PercentageInUse -ge 95) { |
| 591 | Write-Host "Kapasitas scope : KRITIS (>=95%)." -ForegroundColor Red |
| 592 | } |
| 593 | elseif ([double]$stats.PercentageInUse -ge 80) { |
| 594 | Write-Host "Kapasitas scope : TINGGI (>=80%)." -ForegroundColor Yellow |
| 595 | } |
| 596 | else { |
| 597 | Write-Host "Kapasitas scope : AMAN (<80%)." -ForegroundColor Green |
| 598 | } |
| 599 | |
| 600 | if ($leasesWithExpiry.Count -gt 0) { |
| 601 | if ($beyond4Hour -gt ($leasesWithExpiry.Count / 2)) { |
| 602 | Write-Host "Mayoritas lease masih memiliki expiry lebih dari 4 jam." -ForegroundColor Yellow |
| 603 | Write-Host "Kemungkinan masih banyak lease lama dari konfigurasi sebelumnya." |
| 604 | } |
| 605 | else { |
| 606 | Write-Host "Mayoritas lease sudah berada dalam window 4 jam." -ForegroundColor Green |
| 607 | } |
| 608 | } |
| 609 | else { |
| 610 | Write-Host "Tidak ada data expiry lease yang dapat dianalisis." -ForegroundColor Yellow |
| 611 | } |
| 612 | |
| 613 | Write-Host |
| 614 | } |
| 615 | catch { |
| 616 | Write-Host |
| 617 | Write-Host "Gagal melakukan Lease Analysis." -ForegroundColor Red |
| 618 | Write-Host $_.Exception.Message -ForegroundColor DarkRed |
| 619 | Write-Host |
| 620 | } |
| 621 | } |
| 622 | |
| 623 | # ============================================================ |
| 624 | # MAIN PROGRAM |
| 625 | # ============================================================ |
| 626 | |
| 627 | try { |
| 628 | Connect-DhcpBackend |
| 629 | |
| 630 | while ($true) { |
| 631 | Show-Title |
| 632 | |
| 633 | if (-not (Test-DhcpSession)) { |
| 634 | throw "PowerShell remote session tidak lagi dalam state Opened." |
| 635 | } |
| 636 | |
| 637 | Write-Host "Masukkan ScopeId yang ingin diperiksa." -ForegroundColor Green |
| 638 | Write-Host "Contoh: 10.110.114.0" |
| 639 | Write-Host |
| 640 | Write-Host "Ketik 0 untuk keluar." |
| 641 | Write-Host |
| 642 | |
| 643 | $ScopeId = Read-Host "ScopeId" |
| 644 | |
| 645 | if ($ScopeId -eq "0") { |
| 646 | break |
| 647 | } |
| 648 | |
| 649 | if ([string]::IsNullOrWhiteSpace($ScopeId)) { |
| 650 | Write-Host |
| 651 | Write-Host "ScopeId tidak boleh kosong." -ForegroundColor Red |
| 652 | Write-Host |
| 653 | Wait-Enter |
| 654 | continue |
| 655 | } |
| 656 | |
| 657 | if (-not (Test-DhcpScope -ScopeId $ScopeId)) { |
| 658 | Write-Host |
| 659 | Write-Host "ScopeId '$ScopeId' tidak ditemukan atau tidak dapat dibaca." -ForegroundColor Red |
| 660 | Write-Host |
| 661 | Wait-Enter "Tekan ENTER untuk mencoba lagi" |
| 662 | continue |
| 663 | } |
| 664 | |
| 665 | $changeScope = $false |
| 666 | |
| 667 | while (-not $changeScope) { |
| 668 | Show-Title |
| 669 | Show-ScopeSummary -ScopeId $ScopeId |
| 670 | |
| 671 | Write-Host "Apa yang ingin dilakukan?" -ForegroundColor Green |
| 672 | Write-Host |
| 673 | Write-Host "[1] Tampilkan daftar lease / perangkat" |
| 674 | Write-Host "[2] Lease Analysis" |
| 675 | Write-Host "[3] Cek ScopeId lain" |
| 676 | Write-Host "[4] Refresh summary scope ini" |
| 677 | Write-Host "[0] Keluar" |
| 678 | Write-Host |
| 679 | |
| 680 | $choice = Read-Host "Pilihan" |
| 681 | |
| 682 | switch ($choice) { |
| 683 | "1" { |
| 684 | Show-ScopeClients -ScopeId $ScopeId |
| 685 | |
| 686 | $clientMenu = $true |
| 687 | while ($clientMenu) { |
| 688 | Write-Host "Apa yang ingin dilakukan selanjutnya?" -ForegroundColor Green |
| 689 | Write-Host |
| 690 | Write-Host "[1] Kembali ke summary scope ini" |
| 691 | Write-Host "[2] Lease Analysis" |
| 692 | Write-Host "[3] Cek ScopeId lain" |
| 693 | Write-Host "[4] Refresh daftar lease" |
| 694 | Write-Host "[0] Keluar" |
| 695 | Write-Host |
| 696 | |
| 697 | $subChoice = Read-Host "Pilihan" |
| 698 | |
| 699 | switch ($subChoice) { |
| 700 | "1" { |
| 701 | $clientMenu = $false |
| 702 | } |
| 703 | "2" { |
| 704 | Show-LeaseAnalysis -ScopeId $ScopeId |
| 705 | Write-Host |
| 706 | Wait-Enter "Tekan ENTER untuk kembali" |
| 707 | $clientMenu = $false |
| 708 | } |
| 709 | "3" { |
| 710 | $clientMenu = $false |
| 711 | $changeScope = $true |
| 712 | } |
| 713 | "4" { |
| 714 | Show-ScopeClients -ScopeId $ScopeId |
| 715 | } |
| 716 | "0" { |
| 717 | return |
| 718 | } |
| 719 | default { |
| 720 | Write-Host |
| 721 | Write-Host "Pilihan tidak valid." -ForegroundColor Red |
| 722 | Write-Host |
| 723 | } |
| 724 | } |
| 725 | } |
| 726 | } |
| 727 | |
| 728 | "2" { |
| 729 | Show-LeaseAnalysis -ScopeId $ScopeId |
| 730 | |
| 731 | $analysisMenu = $true |
| 732 | while ($analysisMenu) { |
| 733 | Write-Host "Apa yang ingin dilakukan selanjutnya?" -ForegroundColor Green |
| 734 | Write-Host |
| 735 | Write-Host "[1] Kembali ke summary scope ini" |
| 736 | Write-Host "[2] Tampilkan daftar lease / perangkat" |
| 737 | Write-Host "[3] Cek ScopeId lain" |
| 738 | Write-Host "[4] Refresh Lease Analysis" |
| 739 | Write-Host "[0] Keluar" |
| 740 | Write-Host |
| 741 | |
| 742 | $subChoice = Read-Host "Pilihan" |
| 743 | |
| 744 | switch ($subChoice) { |
| 745 | "1" { |
| 746 | $analysisMenu = $false |
| 747 | } |
| 748 | "2" { |
| 749 | Show-ScopeClients -ScopeId $ScopeId |
| 750 | Write-Host |
| 751 | Wait-Enter "Tekan ENTER untuk kembali" |
| 752 | $analysisMenu = $false |
| 753 | } |
| 754 | "3" { |
| 755 | $analysisMenu = $false |
| 756 | $changeScope = $true |
| 757 | } |
| 758 | "4" { |
| 759 | Show-LeaseAnalysis -ScopeId $ScopeId |
| 760 | } |
| 761 | "0" { |
| 762 | return |
| 763 | } |
| 764 | default { |
| 765 | Write-Host |
| 766 | Write-Host "Pilihan tidak valid." -ForegroundColor Red |
| 767 | Write-Host |
| 768 | } |
| 769 | } |
| 770 | } |
| 771 | } |
| 772 | |
| 773 | "3" { |
| 774 | $changeScope = $true |
| 775 | } |
| 776 | |
| 777 | "4" { |
| 778 | # Loop refreshes summary. |
| 779 | } |
| 780 | |
| 781 | "0" { |
| 782 | return |
| 783 | } |
| 784 | |
| 785 | default { |
| 786 | Write-Host |
| 787 | Write-Host "Pilihan tidak valid." -ForegroundColor Red |
| 788 | Start-Sleep -Seconds 1 |
| 789 | } |
| 790 | } |
| 791 | } |
| 792 | } |
| 793 | } |
| 794 | catch { |
| 795 | Write-Host |
| 796 | Write-Host "FATAL ERROR" -ForegroundColor Red |
| 797 | Write-Host "---------------------------------------------------" |
| 798 | Write-Host $_.Exception.Message -ForegroundColor Red |
| 799 | Write-Host |
| 800 | exit 1 |
| 801 | } |
| 802 | finally { |
| 803 | Disconnect-DhcpBackend |
| 804 | Write-Host |
| 805 | Write-Host "Keluar dari Universal DHCP Scope Monitoring Utility." -ForegroundColor Cyan |
| 806 | Write-Host |
| 807 | } |
| 808 |