Set network IP Static/DHCP using Powershell

set-ip.md

#How to set network IP Static/DHCP using Powershell in Windows 8 and above

This is a powershell script to set IP address for a network adapter using Powershell and restart the network adapter after it completes. Follow the below steps and detailed information about the parameters below.

Create a ps1 file using the below code

# Author: Munim (me@munim.net)

param (
	[string]$Name = "Ethernet",
	[IPAddress]$IP = "192.168.0.100",
    [string] $CIDR = 24, # This means subnet mask = 255.255.255.0,
	[string]$Gateway = "192.168.0.1",
	[string]$Dns = "8.8.8.8,8.8.4.4",
	[string]$IPType = "IPv4",
    [string]$Type = "DHCP"
)

# Retrieve the network adapter that you want to configure
$adapter = Get-NetAdapter | ? {$_.Name -eq $Name}

if ($Type -eq "Static") {

    # Remove any existing IP, gateway from our ipv4 adapter
    If (($adapter | Get-NetIPConfiguration).IPv4Address.IPAddress) {
        Write-Host "Removing existing IP"
        $adapter | Remove-NetIPAddress -AddressFamily $IPType -Confirm:$false
    }

    If (($adapter | Get-NetIPConfiguration).Ipv4DefaultGateway) {
        Write-Host "Removing existing gateway"
        $adapter | Remove-NetRoute -AddressFamily $IPType -Confirm:$false
    }

    # Configure the IP address and default gateway
    Write-Host "Configuring new IP"

    $adapter | New-NetIPAddress `
        -AddressFamily $IPType `
        -IPAddress $IP `
        -PrefixLength $CIDR `
        -DefaultGateway $Gateway

    # Configure the DNS client server IP addresses
    Write-Host "Configuring new gateway"
    $adapter | Set-DnsClientServerAddress -ServerAddresses $DNS
}
else {
    $interface = $adapter | Get-NetIPInterface -AddressFamily $IPType

    If ($interface.Dhcp -eq "Disabled") {
        # Remove existing gateway
        Write-Host "Removing existing gateway"
        If (($interface | Get-NetIPConfiguration).Ipv4DefaultGateway) {
            $interface | Remove-NetRoute -Confirm:$false
        }

        # Enable DHCP
        Write-Host "Enabling DHCP on interface"
        $interface | Set-NetIPInterface -DHCP Enabled

        # Configure the  DNS Servers automatically
        Write-Host "Enabling automatic DNS"
        $interface | Set-DnsClientServerAddress -ResetServerAddresses
    }
}
Write-Host "Restarting adapter"
$adapter | Restart-NetAdapter

You need to invoke the script with the below parameters and details as follows:

[Parameter] Name

Name of the adapter you want to make changes to. Default is Ethernet.

[Parameter] IP

The new IP address you're going to set. This parameter is ignored when DHCP is set. Default is 192.168.0.100

[Parameter] CIDR

This is CIDR (Classless Inter-Domain Routing), another form of subnet in simple terms of usage in this script. If CIDR is unknown, please visit http://mxtoolbox.com/subnetcalculator.aspx and put the according value after / of your subnet. For instance, if your subnet is 225.225.252.0/22, then your CIDR is 22 and hence your value for this script. The default value is 24, which is equivalent to 255.255.255.0

[Parameter] Dns

This is the default gateway for your network adapter you would like to set. Default is 192.168.0.1

[Parameter] IPType

The acceptable value is either IPv4 or IPv6. For most people, you wouldn't need to set this, as it defaults to IPv4.

[Parameter] Type

This is to set either Static/DHCP. Default is DHCP.