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

Question

我正在使用 RenewDHCPLease() 来更新系统的 IP 地址。

1. RenewDHCPLease() 和 ipconfig/renew 之间的确切区别是什么？
2. 哪个更适合在 Powershell 中使用？
3. 是否有必要在 RenewDHCPLease() 之前使用 ReleaseDHCPLease()？如果是，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
}

Answer 1

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

在 RenewDHCPLease 之前不需要使用 ReleaseDHCPLease 因为旧地址被释放并且在使用 RenewDHCPLease 时会自动获取新地址/p>

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

您也可以使用 RenewDHCPLeaseAll 方法一次更新它们。希望这会有所帮助:)