Two Networks on One Computer?

January 20, 2010 at 09:51:12
Specs: Windows 7
I have two cable modems (two internet connections), each going to a router. I want to be able to see /share with computers on one network from my primary computer on the second network. Is there a way to connect to both networks from my primary PC? Do I have to install a 2nd NIC and plug into the other router, too?

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January 20, 2010 at 10:23:25
Google Bridging and Trusting networks.

We were the unwilling, led by the unqualified, to do the unnecessary, for the ungrateful.

VietNam War Poster

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January 20, 2010 at 10:45:22
if two nics
1. you have to have a physical connection to both networks
2. this connection can compromise the reason for seperating the networks.
3. only one of the two nics can contain a gateway entry.
4. you do not want to bridge or route thru your pc due to traffic load and possible security breach [#2]

Instead of two nics consider having both routers go to a common switch with the same subnet.

For example:
pcs would be gateway
pcs would be gateway

All being in the same subnet they would all be able to share and see each other. Ideally you would do static ip assignments to all the workstations.

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January 20, 2010 at 11:05:07
Thanks for the quick responses.

I have both routers with different IP addresses with DHCP enabled:

router1 - dishes 1.100 - 1.110
router2 - dishes 2,200 - 2.202

Each router is connected to a cable modem with its own Internet connection.

I have the two Internet connections to alleviate too many users on the single Internet connection causing slowdowns (which is more the router than the broadband from my understanding...but that is a different post if it comes to that). So I would like to set something up where a) all users on either network can see each other, etc. OR b) I can see all users on the other network,etc., with a preference to a.

As for a switch between the routers and the PCs, I don't think that would work. I am dishing out wireless and wired on the router 1 and only wired (wireless disabled) on router 2. Or would that not matter?

Otherwise...any other suggestions would be greatly appreciated.

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Related Solutions

January 20, 2010 at 11:13:42
you need a physical connection between networks.
if you don't want to use a switch then use a crossover cable from router1 lan port to router2 lan port
forget dhcp for only 14 pcs. static assign ip to the pcs both wired and wireless to manually load balance

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January 20, 2010 at 11:29:31
So it would be as simple as connecting the two routers together from, say, port 1 on router 1 to port 1 on router 2? Is so, would the Internet connections still be isolated between the networks (don't want to share the Internet connection for obvious reasons)?

Or could it be something as simple as connecting to one network wired and the other network wireless on any PC that I want to do the cross network sharing? Or is that not possible?

As for static addresses, I planned on doing that on the smaller network. I guess that would work on the larger network, too, as long as the ocassional guest on the network (usually wireless) doesn't have a static IP that conflicts with the existing computers. But, what if the guest doesn't have a static IP? Would they then be unable to connect?

Thanks again for your quick and informative responses!!!

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January 20, 2010 at 12:46:33
which internet connection used is decided by which gateway entry you assign.
if you don't want them using the internet don't put in a gateway entry

guest would need to be assigned a ip that would then be entered into their tcp/ip properties.

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