Win 7, 2 routers, separate subnets, wired + wi-fi, can't connect when both NICs enabled

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gaij

Honorable
Dec 31, 2013
3
0
10,510
Greetings,

I have the following setup:
1 Win 7 computer with wired NIC and wi-fi NIC
1 Linksys WRT54G (with DD-WRT installed)
1 Sagecom 2864 (provided by my ISP, Bell Canada)
1 HP 1320n network printer
1 high-speed internet connection

Both routers have wi-fi capability and 4 ethernet ports each.

My router setup:
Linksys WRT54G: IP: 192.168.1.1, DHCP enabled
Sagecom 2864: IP: 192.168.2.1, DHCP enabled

Note: The routers are *not* connected to one another with a cable, nor by wi-fi. The wi-fi on the Linksys router is turned off.

I want the following setup, with the routers acting *independently* from one another on *separate* subnets:

(a) Subnet : 192.168.1.0 (255.255.255.0)
My PC --> Wired NIC -->Lynksys router --> printer (via network cable)

(b) Subnet 192.168.2.0 (255.255.255.0)
My PC --> Wi-Fi NIC -->Sagecom --> internet (via wireless)


Notes:
- Within Windows, the two connections are *not* bridged
- Within Windows, no IP is specified, DHCP is selected
- Using IP v4 only
- The printer is set to receive an IP via DHCP

- IPCONFIG /all shows:

Wired NIC:
IP: 192.168.1.121
Default Gateway: 192.168.1.1

Wireless NIC:
IP: 192.168.2.12
Default Gateway: 192.168.2.1


The situation:
- I can only connect to the internet when my network connection (a), above (i.e., Wired NIC) is disabled. When both NICs are enabled I cannot connect.

- I can only print to the network printer when connection (b), above (i.e. wi-fi NIC), is disabled. When both NICs are enabled I cannot print.

Any ideas about this?

Let me know if you need further clarification and thanks for any insights into the problem.

-Dan
 
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G

gaij

Honorable
Dec 31, 2013
3
0
10,510
Hello, and thanks for your reply. I am not clear on what basis you are making that claim. Surely Windows has the capability built-in to allow more than one NIC in a single machine. What do you mean by "one card at a time"?

I wish to you use NIC 1 and router 1 on subnet 1 for my internet connection and a separate NIC 2 and router 2 on subnet 2 for my local network and printing.

The NICs are *not* bridged and the router 1 and router 2 are *not* joined in any way.

Might this not qualify as 'one card at a time'?

Just trying to get some answers.

Thanks.
 
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G

gaij

Honorable
Dec 31, 2013
3
0
10,510
Hello again. Thanks for your reply.

I have solved the problem. The following configuration works:

NIC 1 (Wired):
IP Address: 192.168.1.2
Subnet Mask: 255.255.255.0
Default Gateway: blank

NIC 2 (Wireless):
Obtains IP address automatically (from router with IP 192.168.2.1)

I can now print to the network printer on Subnet 1 (wired) and connect to teh internet on Subnet 2 (wireless).

Apparently Windows *can* use both a wired and a wireless connection on the same computer at the same time.

Searching Google for the following confirms also that it is indeed very doable:
windows wired and wireless different subnet at same time
 
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