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Home > Computers & Technology > Networking   »   Connecting to multiple networks at the same time with one PC

 
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Old Jan 9, 2007, 05:20 AM
LethPhaos
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Connecting to multiple networks at the same time with one PC

Hi all,

I have a question about being on multiple networks at the same time.

I have two networks at home, first I'll explain the topology of each of them.

Directly on my internet connection, behind my modem, there is a switch (which functions as a hub I guess). Behind this hub are 2 routers. Each router has a different network under it, with an own DHCP server and configuration.

I'll list the configuration I think you need, do ask more if you need any!

Network1:

Router: 10/100 SMC 7004ABR
LAN IP:192.168.2.1
DHCP range: 192.168.2.111-192.168.2.120

Network2:

Router: 10/100 Linksys WRT54GR
LAN IP:192.168.3.1
DHCP range: 192.168.3.111-192.168.3.120

Now, the linksys router has 2 wireless clients (but this is of no matter in this case I guess)
The wired router has 1 wired client (which is on a fixed ip address).

Now I have my computer, another, I didn't mention it before, which is connected on both networks with 2 nic's.

For network1 I set myself on a fixed ip 192.168.2.101, for network 2 I'm on 192.168.3.101.
The subnet masks and gateways are set correctly for each one of them.

Now I want to use internet via network1 (because on network2 the internet is slower because of the crap router), but I want to be able to view shares and share myself on both networks (windows share)

How would I accomplish that?

Thanks in advance,

LethPhaos

(P.S. the networks are functioning allright, even with me on both of them, but I don't know which one gives me internet. I can only see shares network1.)

EDIT: I'm on wired connections
EDIT2: computers on network2 CAN copy from my windows shares and I see the computers of network 1 AND 2 in my network places (except for 1 computer on network2, but this could be caused by it's firewall I guess) so that fixes one of my 2 questions. Only question remaining: which network am I using for internet, network1, network2 or both?

Another question that I came up with, is it possible to share a folder only on one of the 2 networks?

EDIT3: by dns'ing myself on irc I found out I'm using network1 for internet, as I wanted. Will I always be or will I be using the one that is first available when I boot?

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Old Jan 12, 2007, 04:23 PM   #21  
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Yes that's normal. You need to change it to be higher than that of Internet1. Higher metric means less preferred.

Also to answer your question about how to back it up...I recall on my WRT54GL there was an option to backup your configuration....oh...wait...I think it was just the configuration not the actual firmware. Nevermind and sorry to send you on a wild goose chase. Anyway, it looks like the 1.04 image was a rogue from all the reading I've done so you might be better off with the 1.01. This is also a fairly new router so with patience you may luck out and a release of dd-wrt would be available for it.

Casey
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Old Jan 13, 2007, 12:48 AM   #22  
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Thanks, but isn't 2 (manually set on nic2) bigger then 1 (default on nic1)
I wouldn't want to make my internet slower offcourse

EDIT: when i set both manually, e.g. 1 for nic1 and 2 for nic2 the speed stays good
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Old Jan 13, 2007, 04:17 PM   #23  
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I would have thought that 2 would be less preferred than the default of 1. I haven't tried this on windows (metrics are not exclusive to windows by the way) but I suspect what happened was that since one was manually set and the other automatic that it is possible that windows would "automatically" set the Internet1 to be less preferred (higher) than the statically assigned. You might want to check just for the heck of it. But since you manually set both at this point and it works then I think you're all set.

You could test to see if windows behaves like all other OSes by disconnecting from your PC the Internet1 cable and see if it switches to Internet2.

Now that all is well (I think) I'm wondering why Internet2 is slow. It shouldn't be. Based on the connectivity you've described I would think that Internet1 and Internet2 should be the same. Unless of course your ISP provides you with better than 10Mbps Ethernet.

Casey
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Old Jan 14, 2007, 09:10 AM   #24  
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Yes indeed, both internet1 and internet2 should be exactly the same, and when i'm connected only on network2 and get internet this way, it isn't slower. Only in combination with a manual metric of 2 and a default metric of 1 it slows down a lot, weird.

When both metrics are set manually, eg "1" and "2", and when I unplug network1, widows behaves normally, eg I get internet from the ther network after +/- 3seconds.

Thanks for your helping hands all who replied ^^
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