差分

このページの2つのバージョン間の差分を表示します。

--- powershell:落書き3 [2024/06/08 10:48] – 128.22.160.91
+++ powershell:落書き3 [2024/07/05 03:03] (現在) – 133.106.51.50
@@ 行 1: / 行 1: @@
-適当
+<code>
-オンライン64Bit	https://dl.google.com/tag/s/app=x64-stable-statsdef_1/update2/installers/ChromeSetup.exe
+# 定義: DFビットを立ててpingを実行する関数
+function Test-MTU {
+    param (
+        [string]$Target,
+        [int]$StartMTU = 800,
+        [int]$EndMTU = 1000
+    )
+    $results = @()
+    for ($mtu = $StartMTU; $mtu -le $EndMTU; $mtu++) {
+        $pingResult = Test-Connection -ComputerName $Target -Count 1 -BufferSize $mtu -DontFragment -ErrorAction SilentlyContinue
+        if ($pingResult.StatusCode -eq 0) {
+            $results += "MTU: $mtu - Success"
+        } else {
+            $results += "MTU: $mtu - Failure"
+        }
+    }
+    return $results
+}
+# example.comに対してMTUを800から1000の範囲でテスト
+$target = "example.com"
+$mtuResults = Test-MTU -Target $target
+# 全インターフェイスのMTUおよびMRU設定を取得
+$interfaces = Get-NetAdapter | Select-Object -Property Name, MacAddress, LinkSpeed, InterfaceDescription
+$mtuSettings = $interfaces | ForEach-Object {
+    $interfaceName = $_.Name
+    $mtu = Get-NetIPInterface -InterfaceAlias $interfaceName | Select-Object -ExpandProperty NlMtu
+    [PSCustomObject]@{
+        Interface = $interfaceName
+        MTU = $mtu
+    }
+}
+# 結果をファイルに書き出し
+$logFile = "mtu-result.txt"
+$mtuResults | Out-File -FilePath $logFile
+Add-Content -Path $logFile -Value "`nCurrent MTU Settings:`n"
+$mtuSettings | Format-Table -AutoSize | Out-String | Add-Content -Path $logFile
+Write-Host "Results saved to $logFile"
+</code>
+<code>
+# PowerShellスクリプト
+function Test-MTU {
+    param (
+        [string]$hostname,
+        [int]$minMTU,
+        [int]$maxMTU
+    )
+    $logFile = "mtu-result.txt"
+    Remove-Item $logFile -ErrorAction SilentlyContinue
+    function Ping-Host {
+        param (
+            [string]$host,
+            [int]$size
+        )
+        $pingResult = Test-Connection -ComputerName $host -Count 4 -BufferSize $size -DontFragment -Quiet
+        return $pingResult
+    }
+    function BinarySearch-MTU {
+        param (
+            [string]$host,
+            [int]$low,
+            [int]$high
+        )
+        while ($low -le $high) {
+            $mid = [math]::Floor(($low + $high) / 2)
+            if (Ping-Host -host $host -size $mid) {
+                $low = $mid + 1
+            } else {
+                $high = $mid - 1
+            }
+        }
+        return $high
+    }
+    # 最適なMTUサイズを探す
+    $optimalMTU = BinarySearch-MTU -host $hostname -low $minMTU -high $maxMTU
+    "Optimal MTU size for $hostname is $optimalMTU" | Out-File -FilePath $logFile -Append
+    # 現在のすべてのインターフェイスのMTUおよびMRU設定を取得
+    $interfaces = Get-NetIPInterface
+    foreach ($interface in $interfaces) {
+        $interfaceInfo = "Interface: $($interface.InterfaceAlias), MTU: $($interface.NlMtu), MRU: $($interface.NlMtu)" # Note: Windows does not expose MRU directly, typically MRU == MTU
+        $interfaceInfo | Out-File -FilePath $logFile -Append
+    }
+}
+# 設定
+$hostname = "example.com"
+$minMTU = 800
+$maxMTU = 1000
+# 実行
+Test-MTU -hostname $hostname -minMTU $minMTU -maxMTU $maxMTU
+</code>
-https://dl.google.com/tag/s/app=x64-stable-statsdef_1/chrome/install/ChromeStandaloneSetup64.exe