在网络监控自动化场景下，PowerShell检测网络延迟的命令如何运用？

# 检测到google.com的连通性（默认发送4个ICMP包）
Test-Connection -ComputerName www.google.com

# 指定发送次数和间隔（单位：秒）
Test-Connection -ComputerName 192.168.1.1 -Count 10 -Delay 2

# 设置超时时间（单位：毫秒）
Test-Connection -TargetName nas01.local -TimeoutMilliseconds 1000

# 获取详细响应数据
$response = Test-Connection -ComputerName router.gateway -Count 1
Write-Host "当前延迟：$($response.ResponseTime)ms" 
Write-Host "数据包大小：$($response.BufferSize)字节"

# 批量检测节点列表
$nodes = @('10.0.0.1', 'dns-server', 'backup-server')
$nodes | ForEach-Object {
    $result = Test-Connection -ComputerName $_ -Count 3 -ErrorAction SilentlyContinue
    [PSCustomObject]@{
        HostName = $_
        AvgLatency = ($result.ResponseTime | Measure-Object -Average).Average
        PacketLoss = ($result.Count - $result.ResponseTime.Count)/$result.Count * 100
    }
}

# 配置监控参数
$monitorTarget = "cloud-service.com"
$checkInterval = 300  # 5分钟间隔
$logPath = "C:\NetworkLogs\latency_$(Get-Date -Format yyyyMMdd).csv"

# 创建CSV日志表头
"Timestamp,Destination,Latency,Status" | Out-File -FilePath $logPath -Encoding UTF8

# 持续监控循环
while($true) {
    try {
        $result = Test-Connection -ComputerName $monitorTarget -Count 2 -ErrorAction Stop
        $avgLatency = ($result.ResponseTime | Measure-Object -Average).Average
        $logEntry = "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss'),$monitorTarget,$avgLatency,OK"
    }
    catch {
        $logEntry = "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss'),$monitorTarget,-1,Timeout"
    }
    
    $logEntry | Out-File -FilePath $logPath -Append -Encoding UTF8
    Start-Sleep -Seconds $checkInterval
}

# 定义告警条件
$warningThreshold = 100  # 毫秒
$criticalThreshold = 500

$currentLatency = (Test-Connection -ComputerName voip-server -Count 3).ResponseTime | Measure-Object -Average | Select-Object -ExpandProperty Average

if ($currentLatency -gt $criticalThreshold) {
    Send-MailMessage -To "noc-team@company.com" -Subject "网络紧急告警" -Body "VOIP服务器延迟已达${currentLatency}ms"
} elseif ($currentLatency -gt $warningThreshold) {
    Write-Warning "网络延迟偏高：${currentLatency}ms"
}

# 创建每日执行的任务
$trigger = New-ScheduledTaskTrigger -Daily -At 8am
$action = New-ScheduledTaskAction -Execute "powershell.exe" -Argument "-File C:\Scripts\network_check.ps1"
Register-ScheduledTask -TaskName "DailyNetworkCheck" -Trigger $trigger -Action $action -User "SYSTEM"

# 生成HTML报告
$logData = Import-Csv -Path $logPath
$html = $logData | ConvertTo-Html -Property Timestamp,Latency,Status
$html | Out-File -FilePath "C:\Reports\NetworkReport.html"