Issues with cable and wireless contecting to router

[mikey]

HI, I have a wireless modem & router and 5 computers, 2 laptops, 2 VoIP ATA's and 3 printers in the house connected to a 16 port switch that is then in turn connected to 1 port on the router (4 port built in).

Now I used to have 3 routers and 2 separate switches connected all with different ip ranges (192.168.0.1, 192.168.0.2 and 192.168.0.3) with various systems and printers connected to each network via cable and all computers connected via wireless to the modem/router.

Now I have changed the setup so that all systems are on the same ip range 192.168.1.* as detailed bellow...
Computer 1 (Cabled) 192.168.1.1 (Wireless) 192.168.1.11
Computer 2 (Cabled) 192.168.1.2 (Wireless) 192.168.1.12
Computer 3 (Cabled) 192.168.1.3 (Wireless) 192.168.1.13
and so on...

I have an issue now when connecting to anything through the network...
But if I disable 1 of the network cards (either wireless or cabled) it works OK, but if I enable it again I can't access anything.

Does anyone know why this is so? is there any way around it? I like to have both cabled and wireless for redundancy plus where the laptops are concerned for portability and then for speed when copying files etc.

any help appreciated.

[ssrattus]

I don't think you can have to network cards on the same subnet

if you change the subnet to 250.250.250.248 will allow 6 IPs, ie 192.168.0.1 - 192.168.0.6 and 192.168.0.9 - 192.168.0.14

If you use 250.250.250.240 will give IPs of 192.168.0.1 - 192.168.0.14 and 192.168.0.17 - 192.168.0.30

There is the option of "bridging" the network cards that will put them onto the same subnet, I haven't done this for years, but it did work when I tried it. google it to see if it will what you want.