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Old 02-21-2008, 03:26 PM
Robert.T.Jarrett Robert.T.Jarrett is offline
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Join Date: Feb 2008
Posts: 3
Default HOWTO: Implement Multiple Subnets Using LinkSys WRT45G Routers

I have figured out how to create a two subnet network, using two LinkSys WRT56G wireless routers as illustrated in my previous post. My process was correct, but my problem was related to an outdated firmware version. In partictular, my router was a "Version 6" and it needed the Version 1.02.2 update from Welcome to Linksys.com. As soon as I updated the router firmware, it worked.

Here is a summary of HOWTO:

On Router-1 (The Gateway)
1. Connect Router-1 to the DSL modem.
2. Logon the administrative web pages at 192.168.1.1
3. On the Basic Setup, select DCHP for the WAN side of Router-1
4. Specify 192.168.1.1 on subnet 255.255.255.0 for the 192.168.1.0 subnet.
5. Enable DHCP on the LAN side starting at 192.168.1.100 for 50 clients
6. Specify the ISP DNS server addresses.
7. Save Settings.

At this point, verify that your clients (static or dynamic) on the 192.168.1.0 subnet can contact the internet and ping each other.

On Router-2 (Subnet-2 Router)
1. Ensure Router-2 is connected to a standalone computer only.
2. Logon the administrative web pages at 192.168.1.1
3. On the Basic Setup, select Static for the WAN side of Router-2.
4. Specify 192.168.1.2 as the WAN IP Address in order to talk to Router-1.
5. Specify 192.168.2.1 on subnet 255.255.255.0 for the 192.168.2.0 subnet.
6. Save Settings.

Now you can connect the two routers.
1. Connect Router-2 WAN port (192.168.1.2) to any LAN port on Router-1.
2. Enable DHCP on the LAN side starting at 192.168.1.100 for 50 clients

Now enable routing from Router-1 to Router-2.
1. On Router-1, go to the Advanced Routing option.
2. Create a new Static Route with the following settings:
Select GATEWAY as the operating mode
Destination LAN is 192.168.2.0
Subnet Mask is 255.255.255.0
Default Gateway 192.168.1.2
Interface is LAN & Wireless
Save Settings

Now enable routing on Router-2
1. On Router-2, go to the Advanced Routing option.
2. Create a new Static Route with the following settings:
Select Router as the operating mode
Ensure RIP is set to Both
Save Settings

You should now be able to access the internet from both subnets, ping computers internally on each subnet, and ping subnet to subnet.

Last edited by Robert.T.Jarrett; 02-21-2008 at 03:32 PM.
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