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Easily configure your NIC for multiple environments with Netsh

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The goal of this article is to show you how to easily switch to different NIC configurations with netsh.

Let's consider the following example :

- Your NIC configuration at work is given by a DHCP server
- You have to visit one important customer twice a week, and an IP address has been reserved for you. The problem is, you have to enter the configuration manually.
- Your home configuration is also static.

OK, there's some work to do now, but you'll perform these actions only once.

Let's start with the easiest one : the DHCP configuration. You can use the friendly graphic interface, and set the parameters to "obtain an address automatically". But you can also use the powerful netsh !

Open a command prompt and type the following command :

netsh interface ip set address "Local Area Connection" dhcp

where "Local Area Connection" is the name of the interface you want to configure.

We now want to export this configuration to be able to use it when needed. To achieve this, type :

netsh -c interface dump >C:\office_dhcp.txt

Good. First file done. 2 to go...

Now, we'll have to configure our card for the customer's environment. Let's say that the IP reserved for us is 10.91.1.100 with a netmask of 255.255.255.0, a default gateway 10.91.1.1, a DNS 10.91.1.10 and a WINS 10.91.1.12

Again, we can do it the good old graphic way, or use netsh :

netsh interface ip set address name="Local Area Connection" static 10.91.1.100  255.255.255.0 10.91.1.1 1

Got the address, netmask and default GW. Now let's take care of the DNS part :

netsh interface ip set dns "Local Area Connection" static 10.91.1.10

And the WINS server :

netsh interface ip set wins "Local Area Connection" static 10.91.1.12

We're now all set to export this configuration :

netsh -c interface dump >C:\Customer.txt


You can repeat these steps to configure your card for your home environment, then export the file :

netsh -c interface dump >C:\home.txt

Now, all we need to do is call the right file for the right environment !

Work : netsh -f C:\office_dhcp.txt
Customer : netsh -f C:\Customer.txt
Home : netsh -f C:\home.txt






 
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Comment
Author:vsg375
3 Comments
 

Expert Comment

by:bobsafieddine
Nice i liked this article and by creating a batch for each config it would be much easier with just mouse clicks
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Expert Comment

by:Ravi Agrawal
A small tip --

If there are only two configurations one with a Static IP and another one for a Dynamic one (by a dhcp server) -- then you can define a Static IP in the Alternate configuration of TCP/IP properties. This will tell  Windows XP to try to get an IP by DHCP server first & if it fails, then it will use the static IP,


Ravi.
alternate-configuration.PNG
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Expert Comment

by:dr_ggm
you are better off using a tool like :
http://www.netsetman.com/
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