Setting up a network with 2 subnets

There is no real reason to set up 2 subnets unless you have more than 255 computers.

Do some research into subnet masks, if you want to pursue this further.

I'm with jjw here, your network isn't nearly big enough to need subnetting, neither from a bandwidth or number of hosts point of view. Still though, is there a particular reason you want to do this?

just help the guy, don't tell him not to do what he wants to do!

i'm in the same boat with him. i have two routers to double my NAT protection. i don't care if you think i'm paranoid. the outside router is also my modem and i don't trust at&t. but the outside router provides wifi, therefore i want to subnet the outside clients (who are subjected to wep security) with the inside clients. please don't advise me that this is not a good idea. i just want to do it.

I don't really know what kind of setups those two routers have, but you will probably need three subnets. I'll give an example how they should maybe be setup, but you will have to figure out what to set in the routers.

WRT54G router will need a LAN IP of 192.168.0.1 with a subnet of 255.255.255.192
Belkin MIMO router will need a LAN IP of 192.168.0.65 with a subnet of 255.255.255.192
These will be the gateway IP's for the computers depending on what router LAN they are connected to.

Next, you will need a subnet between the two routers so use 192.168.0.129 with a subnet of 255.255.255.252 on the WRT54G router and use 192.168.0.130 with subnet of 255.255.255.252 for the Belkin router.

I'm assuming the WRT54G router's WAN port will be connected to the modem? You will then connect say LAN1 on the WRT54G to the LAN1 on the Belkin router. LAN2 on each router will be connected to a switch and (one or two)computers connected to a switch.

You will then have to put in static routes to each network on each router. WRT54G will need a static route to the 192.168.0.64 network, and the Belkin will need a static route to the 192.168.0.0 network.

When you are done you will have 61 hosts available for each network 192.168.1.2 - 192.168.1.62 and 192.168.1.66 - 192.168.126 which should be enough.

I don't know if I forgot something or messed something up since I don't play with networking much, but I hope this helps.

Edit: I just realized how old this thread was lol.

Yes it's an old thread but I've just come across it as I sit here having wasted another whole evening trying to get my home network up and running! But I'm thinking that you might have the knowledge to help me, DarkNet!

I have two wired/wireless routers and a cable modem. Router A is connected to the modem through its WAN port and has a PC connected to one of its LAN ports. This router has an IP of 192.168.0.1 and is allocating addresses from 192.168.0.100 - 192.168.0.254 with a subnet mask of 255.255.255.0.

Router B is configured in 'Station' mode. It is allocated a static IP of 192.168.0.254 by Router A. Since the two routers are not physically connected, being at two different ends of the house, this IP address applies to Router B's wireless 'side' (can you tell I don't really understand this yet? ). Router B is configured internally (presumably on its wired 'side') with an IP of 192.168.1.1. It is allocating addresses from 192.168.1.1 - 192.168.1.254 with a subnet maks of 255.255.255.0. Connected to one of the wired LAN ports on Router B is a laptop, configured with a static IP of 192.168.1.101.

Ok, so as I understand it I have two discrete networks with two different subnets, not for any supposed security benefit but because I'm using the internal, wired LAN ports on Router B it seems unavoidable.

The laptop connected by an ethernet cable to Router B gets Internet access and I can ping Router A and the attached PC on the other subnet (192.168.0.0). I can even open shares on the PC from the laptop on the other subnet if I use the IP address rather than the computer name in the address. I can also ping the laptop connected to Router B from the PC connected to Router A if I first add a route on the PC using the 'Route Add' command to configure a route through the wireless 'side' of Router B (i.e. 'Route Add 192.168.1.0 mask 255.255.255.0 192.168.0.254).

That's all well and good but I want to be able to see the devices on one subnet when I open the 'Network' window in Windows Vista on devices in the other subnet. I want to see 'PCNAME' show up in the Network window of 'LAPTOP'. All of this is a precursor to my original goal to connect my XBOX 360 through an ethernet cable to Router B (wish I'd just stumped up the cash for the XBOX 360 Wireless Adapater now, although if I can get this working I'll have 802.11N speeds around the house for streaming HDTV).

So what am I doing wrong? Why will the devices on these two subnets not see each other? I have tried literally everything I can think of. I've spent all of this evening, my third such wasted evening, changing subnet masks on routers and hosts to 255.255.0.0 thinking that this would specify that the devices were all on one big happy network and thus prompting them to communicate properly but this hasn't proved to be the case.

I know this is a horrendously long post but if ANYBODY could help me out with this there's a good chance they could have my daughter's hand in marriage if I ever have kids. And they liked girls. And one of my kids was a girl. Point is, I'd love that person forever!

P.S. There are lots of similar posts online similar to this but none I can see quite like mine where there are essentially two wired networks joined together by a wireless connection.