I have a TP-Link W9970 which is connected to a DSL. I have setup the bridge connection in the tp link router and want to use it purely as a modem and connect the LAN on it to my WAN on openwrt router. I have tried this and no internet. My ISP uses dynamic addresses to assign IP so no need for username and passwords. Am I missing something here, in the config? Trying to avoid double NAT.
Thanks
If your modem is in bridge mode providing DHCP then a default OpenWRT router connected with its WAN should work right out of the box.
Make sure the modem is in bridge mode and after that power down the modem.
Connect to the open WRT router and reset to defaults.
Power up the modem and after 5 minutes connect the OpenWRT router and power it up.
You often need to power down modem and router so that the modem can learn the MAC address of the OpenWRT router
Tried this and still doesn’t seem to be working. The modem is assigning a WAN IP of 192.168.1.100 on the openwrt router. When trying to google I get a dns problem but when pinging 8.8.8.8 I get destination host unreachable, so not sure it is anything to do with the DNS servers
Then the modem is not in bridge mode.
You can/should have internet (albeit double NATted) if you change the routers address from 192.168.1.1 to 192.168.2.1
That address can be found on the LAN interface.
I suggest you change it and then you might have internet again and after that you can research how to set the modem in bridge mode.
No need to change the routers IP back just keep it at 192.168.2.1
Note after changing you might need to reboot your client to get a new IP address in the 192.168.2.0/24 subnet