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Script to Change Subnet & Default Gateway for windows Server 2k8

Posted on 2014-11-18
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Last Modified: 2014-12-14
hi,

We plan to change our network design and we want to run a script that will make things faster for us.

We want the script to run with the following conditions:
===============================================
1. It will keep the current Static IP Address that is configured and use it [it will not change].
2. Change the subnet mask to a new subnet mask we'll insert it.
3. change the default gateway address to a new address we'll insert it.

for OS: Windows Server 2008

we want that the script will be fully automatic (without the need to answer any questions).

thanks.
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Question by:Tufin
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Accepted Solution

by:
Rajitha Chimmani earned 2000 total points
ID: 40450618
You may use the following powershell code.

You need to feed the servername,subnetmask and default gateway in a csv file in below format.

Server,subnet,gateway
server1,x.x.x.x,x.x.x.x
server2,x.x.x.x,x.x.x.x

foreach($server in import-csv input.csv){
$nic = Get-WmiObject win32_networkadapterconfiguration -ComputerName $server.server | where {$_.ipenabled = 'true'}
$IP = $nic.IPaddress
$nic.EnableStatic($IPaddress,$server.subnet)
$nic.SetGateways($server.gateway,1)
}

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If you have same subnet and gateway values for all servers then you need to just give the first column in the csv file and use the following code

$subnet = x.x.x.x
$gateway = x.x.x.x
foreach($server in import-csv input.csv){
$nic = Get-WmiObject win32_networkadapterconfiguration -ComputerName $server.server | where {$_.ipenabled = 'true'}
$IP = $nic.IPaddress
$nic.EnableStatic($IPaddress,$subnet)
$nic.SetGateways($gateway,1)
}

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