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Accepted
mahmood
Asked: 2021-02-04 12:12:59 +0800 CST

通过powershell远程IP更改后断开连接

  • 772

使用以下 powershell 代码，我可以修改远程 Windows 7 机器的静态 IP。

Write-Host("Modifying IP... ")
Invoke-Command -ComputerName $RemoteMachine -Credential $Cred -ScriptBlock { 
           & {
           $adapter = Get-WmiObject win32_NetworkAdapterConfiguration -filter "Index = 7"
           $adapter.EnableStatic($Using:NewIP,"255.255.255.0")
           } }

这是我脚本的最后一部分。更改IP后，连接丢失。这是意料之中的。问题是脚本仍然尝试重新连接大约 4 分钟，然后它放弃了。输出如下所示：

Modifying IP... 
WARNING: The network connection to 10.1.1.50 has been interrupted. Attempting to reconnect for up to 4 minutes...
WARNING: Attempting to reconnect to 10.1.1.50 ...
WARNING: Attempting to reconnect to 10.1.1.50 ...
WARNING: Attempting to reconnect to 10.1.1.50 ...
WARNING: Attempting to reconnect to 10.1.1.50 ...
WARNING: Attempting to reconnect to 10.1.1.50 ...
WARNING: Attempting to reconnect to 10.1.1.50 ...
WARNING: The reconnection attempt to 10.1.1.50 failed. Attempting to disconnect the session...
WARNING: Reconnection attempt canceled. Please repair the network connection and reconnect using Connect-PSSession or Receive-PSSession.

PS C:\Windows\system32>

我怎样才能避免这种情况？

powershell

2 个回答

  1. Best Answer

    发送命令而不等待任何结果

    如果您只想向远程计算机发送命令并且不想等待任何结果，只需使用-InDisconnectedSessionInvoke-Command 的参数即可。

    Write-Host('Modifying IP... ')
Invoke-Command -ComputerName $RemoteMachine -Credential $Cred -InDisconnectedSession -ScriptBlock { 
    $adapter = Get-WmiObject win32_NetworkAdapterConfiguration -filter 'Index = 7'
    $adapter.EnableStatic($Using:NewIP, '255.255.255.0')
}

    立即发送命令而不等待结果

    如果您在一段时间后需要来自远程计算机的结果，但不想立即获得它，那么您必须在仍然使用上述参数的同时使用远程 PSSession。

    $newIP         = '172.168.0.1'
# a friendly name for the session. Useful for 'Get-PSSession'
$psSessionName = 'ipAddressChange'

$invokeCommandParam = @{
    SessionName           = $psSessionName
    ComputerName          = $RemoteMachine
    Credential            = $Cred
    InDisconnectedSession = $true
    ScriptBlock           = {
        $adapter = Get-WmiObject win32_NetworkAdapterConfiguration -filter 'Index = 7'
        $adapter.EnableStatic($Using:NewIP, '255.255.255.0')
    }
}

$psSession = Invoke-Command @invokeCommandParam 

# wait some seconds for the remote machine to execute the command
Start-Sleep -Seconds 7

Write-Host 'Waiting for remote machine ' -NoNewline
while (!(Test-Connection $RemoteMachine -IPv4 -Quiet -TimeoutSeconds 2)) {
    Write-Host '.' -NoNewline
}

# receive output from remote machine
$result = Receive-PSSession -Session $pSSession
$result

<# 
If Receive-PSSession above does not work due to IP address change, try to get the PSSession again:
    $psSession = Get-PSSession -ComputerName $RemoteMachine -Credential $Cred -Name $psSessionName
    $result    = Receive-PSSession -Session $psSession
    $result
#>

    有关更多信息，请参阅：

    • 1

  2. 您可以使用 $null 或 [void]，根本看不到响应，但它仍然会发生，或者，如果您不想看到，您需要使用 try/catch 或 if /then 硬退出脚本它，或者，特别是你想要多少响应的代码。所以这...

    ping /n 2 /l 1000 localhost

    或这个...

    Test-Connection -Count 1 -ComputerName localhost
    • 0

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