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Laptop with Two Internet Connections

Posted on 2013-01-16
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Last Modified: 2013-02-14
I have a laptop that is a part of our corporate network. Unfortunately, it is at a satellite office that has slow Internet.

I have ordered a high-speed wireless connection from Clear for this one laptop.

I'm having the user download the big files while using the wireless connection, then disconnecting from it, then plugging in the corporate (slow) Ethernet cable so he can copy the file to the LAN.

Is there a more graceful way to do this? I do not want to spend the money on a new router. I want the laptop to automatically distinguish between each connection.

Ideally, I would have the Ethernet cable plugged into the laptop and use Wi-Fi to connect to the clear connection at the same time. When the user browses the web or uses FTP to download these files, it will use the faster Clear (wi-Max) connection.

Then, when he wants to copy that same file to the LAN, the computer will know to route his request through the Ethernet cable.

Is there a way this can be done?
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Question by:JohnMan777
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7 Comments
 
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Accepted Solution

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airwrck earned 2000 total points
ID: 38783772
The computer knows where the LAN is.  The problem to solve is how to get the laptop to "prefer" the Wireless Internet connection.

Find the Network Adapter configuration on Windows (Control Panel > Network and Sharing Center > Change Adapter Settings on the left sidebar), you can go into the Properties of the Wired connection, Edit the IP Configuration, go into the Advanced button, uncheck the "Automatic Metric", and put 20 in for the Wired IP metric.  Click all the appropriate OK boxes to get out of Network Adapter properties.

To verify that your changes were committed, open a command window and type "netstat -r".  The result will show two routes to 0.0.0.0 the wireless connection with a 1 metric and the wired connection with a 20 metric.  Windows will take the path with the lowest metric to the Internet (0.0.0.0)

Hope this helps.  Good luck
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Author Comment

by:JohnMan777
ID: 38783858
Thank you for the quick response airwrck.

A test that it's working properly would be two ping tests.

If I ping to google.com, it should prefer going out through the lower metric (my wireless connection)

If I ping to 192.168.93.20 (a server on my LAN) it should go through my wired connection.

Does the configuration you suggest make the above happen? It seems that it would always use the lower metric, regardless of where I want to ping.

Thanks in advance,

John
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LVL 6

Expert Comment

by:airwrck
ID: 38783920
yes, the configuration I'm suggesting does exactly that.  the specific route to 192.168.93.20 will be found in that routing table in Windows.
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Author Comment

by:JohnMan777
ID: 38783981
This is sounding good.

Will DNS work as well?  If I ping to mycompany.local, I assume it will try Clear's DNS first and then try my internal?

I will have the Clear Wi-Max router her tomorrow to test all of this with.

Thank you,

John
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LVL 6

Expert Comment

by:airwrck
ID: 38784461
DNS - you can have each interface set up with different DNS servers.  for the wimax side, you'll probably get one via dhcp and it will probably be the wimax device acting as a proxy.

for the .local domain, it should go to whatever dns server is setup on the Ethernet wired connection.  Probably picked up via dhcp or manually programmed by you.
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