Complicated - Can't access my router settings

[Givemema]

Hey.

This is a bit complicated I think, but I will try to explain it to my best.

I have 2 devices, 1 that is acting as a modem/router, and 1 that is a router (TP-Link) but acts as a switch really.

Basically the modem/router device connects via L2TP and pulls an IP, then I have 1 cable running from that modem/router into my TP-LINK, connected into the TP-LINK via a regular LAN connection, not via the WAN connection.

Then I have different PCs connected to the TP-LINK, all getting IPs from the modem/router, as I disabled DHCP on the TP-LINK (so it acts as a switch).

So now, when I'm connected to the TP-LINK, I can access the modem/router and I am getting an IP from it and everything is fine.

The problem - I cannot access the TP-LINK software, to change the wifi password or name for example.

Is there any way I can access the TP-LINK software?

Thanks.

Edit:
This is what it looks like on my modem/router - http://i.imgur.com/PGuJfaD.png
As you can see, the TP-LINK hasn't been assigned an IP.

 

[SkyNetRising]

TP-LINK has a local ip address (probably 192.168.0.1 or 192.168.1.1).
Set ip adress of your computer to same subnet as TP-LINK router lan adress.
Then connect to TP-LINK router management web page and configure wlan settings.

No TP-LINK software use is necessary, any web browser will do it.

 

[nigelivey]

Try clearing the cache on your browser.

 

[jsmithepa]

You are double-NATing. I like u to use a single flat subnet instead by configuring WIFI router as Access Point (will make your LAN simpler), but maybe that's too much too ask for this one request u got, so follow what the other fellahs say.

 

[nigelivey]

How can it be double natted if connected lan to lan, and is receiving an IP from router 1 and dhcp disabled on router 2??

 

[Givemema]

Thanks for the answers guys.
Maybe I can get some more input.

 

[BuddhaSkoota]

Basically the modem/router device connects via L2TP and pulls an IP, then I have 1 cable running from that modem/router into my TP-LINK, connected into the TP-LINK via a regular LAN connection, not via the WAN connection.

Then I have different PCs connected to the TP-LINK, all getting IPs from the modem/router, as I disabled DHCP on the TP-LINK (so it acts as a switch).

So now, when I'm connected to the TP-LINK, I can access the modem/router and I am getting an IP from it and everything is fine.

The problem - I cannot access the TP-LINK software, to change the wifi password or name for example.

Is there any way I can access the TP-LINK software?

Your main router may have an address in a different subnet than the TP-Link. You can check by running an ipconfig and finding if the IP address shows 192.168.1.x.

If not, one possible fix is to change the LAN IP of the main router to 192.168.1.2 (to avoid an IP conflict with the default 192.168.1.1 of the TP-Link), and reboot all devices on the network to get the new default gateway. You would then be able to access both routers at their corresponding addresses.

Edit: You'll also need to check/adjust the DHCP settings of the main router to match the new subnet.