Routing problems

[meester]

I have a network configured thus:

ADSL modem (routertech) on 192.168.1.1 with dhcp server
Wireless router (Buffalo) on 192.168.2.1 connected to the ADSL modem. Router is 192.168.1.2 (via DHCP)

I have numerous devices connected to the 192.168.2.1 gateway, PCs, phones, an internet radio. All work fine.

Unfortunately however my new TV doesn't work. It is able to see the LAN (192.168.2.*) and access my DLNA servers, but it doesn't connect to the internet. When it does its self test it says Network ok, DNS ok, Internet fail. If I plug it directly into the ADSL modem, it is able to connect to the internet, but obviously then it's not on the LAN, and also my 192.168.2.* network has no internet.

Any suggestions what I might be able to do to the router to make the TV work?

 

[Crusty]

Any reason you are running the double NAT? Do you have devices attached to the routertech device other than the Buffalo router?

 

[meester]

Any reason you are running the double NAT? Do you have devices attached to the routertech device other than the Buffalo router?

No I don't, but I couldn't get the Buffalo router to see the routertech modem/router without setting up the Routertech as a DHCP server.

 

[meester]

Here is my config

 

[seepy83]

Turn off the DHCP server on your Buffalo router so that it acts like a Wireless Access Point and Switch, and connect it to the Routertech via one of the switch ports instead of the WAN port.