powershell - “RenewDHCPLease()”和 “IPConfig/renew”之间的区别？

我正在使用RenewDHCPLease()更新系统的IP地址。

RenewDHCPLease()和ipconfig /renew之间的确切区别是什么？

在Powershell中使用哪个更好？

是否有必要在ReleaseDHCPLease()之前使用RenewDHCPLease()？如果可以，为什么？

下面是我的代码:

try {
    $ips = Get-WmiObject -Class Win32_NetworkAdapterConfiguration | Where { $_.IpEnabled -eq $true -and $_.DhcpEnabled -eq $true} -ErrorAction Stop
    if (!$ips) {
        Write-Output "`nDHCP is not Enabled on this system"
        Exit
    }
    foreach ($ip in $ips) {
        Write-Output "`nRenewing IP Addresses"
        $ip.RenewDHCPLease() | Out-Null
        if ($?) {
            Write-Output "IP address has been renewed for this system"
        }
        else {
            Write-Error "IP Address Could not be renewed"
        }
    }
}
catch {
    $_.Exception.Message
}

最佳答案

ReleaseDHCPLease releases the IP address bound to a specific DHCP enabled network adapterRenewDHCPLease Renews the IP address on a specific DHCP enabled network adapter

由于使用ReleaseDHCPLease时会释放旧地址并自动获取新地址，因此无需在RenewDHCPLease之前使用RenewDHCPLease。

Get-WmiObject Win32_NetworkAdapterConfiguration -Filter 'IpEnabled=True AND DhcpEnabled=True' | Foreach-Object{
    $_.RenewDHCPLease()
}

您也可以使用RenewDHCPLeaseAll方法立即更新它们。希望这可以帮助 :)