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Hack 45 Use netsh to Change Configuration Settings
You can use the Windows 2000 Netshell (netsh)
command to do some amazing things, including switching your machine
between two different network configurations.
If you move your machines
around a lot, you know
the pain of having to reconfigure their network settings so they can
continue to talk on the network. This sort of thing is common in a
testbed environment where you are building and testing different
network-deployment scenarios prior to rolling out the real thing. You
might also have to reconfigure network settings for your computers if
you have a routed network with several subnets in one building and
frequently move machines from one subnet to anothera common
scenario in a physics lab or similar academic environment. Otherwise,
if you have a laptop that you need to use at work, at home, and at
the sites of several clients, being able to save and reload network
configurations would be a real timesaver.
There are a few utilities on the market that allow you to quickly
switch between different network configurations. NetSwitcher
(http://www.netswitcher.com) is
one effective tool. But did you know you can do the same thing using
the Windows 2000 Netshell (netsh) command?
Using netsh
Here's how it works. First, you dump your network
settings to a text file through the command line, as follows:
netsh -c interface dump > NetworkSettings.txt
This command stores your current network settings in a text file
named NetworkSettings.txt. Now,
let's say you have to reconfigure your
machine's network settings to repurpose the machine
or move it to a different part of the network. Then, later, if you
need to restore your machine's original network
settings, you can simply type the following command and load back in
the previously dumped settings:
netsh -f NetworkSettings.txt
Note that the destination filename is not important, so you can
effectively create multiple configuration files. You can create and
name one for each network configuration you need. For example, you
can use Work.txt for the office,
Home.txt for your home configuration, and
something like Client.txt to hold the values for
a network you are temporarily visiting.
Rod Trent
