This is probably simple to do but after mucking around a bit I could not work it out.
I am a TCL/VF customer so I have had a separate router (TPLink WR1043ND) with the cable modem. And it's flashed with Gargoyle.
I would like to continue to use that router and only use the Technicolor as a modem. But the life of me I cannot work out how to configure the TPLink as a router which points to the Technicolor.
I also at the moment am keeping the TCL connection but will back it down from 150GB to 10-20GB.
I reset all the Technicolor settings and set its gateway to 192,168.2.254. The TPLink was always at 192.168.2.250.
In the main TP Link setting for the cable connection you set static IP, the IP address that TCL gives you and the gateway. But I tried setting the IP address to 192.168.2.254 and the gateway to the same and that didn't work. It's probably something easy to fix but it wasn't obvious to me.
As an aside the Technicolor seems to have a default DHCP scope of
LAN_private 192.168.1.64 - 192.168.1.253 192.168.1.254
This plays hell with my network since the default gateway is 192.168.2.254 so addresses assigned in the 192.168.1.x range via DHCP don't connect to the Internet. I have assigned a new DHCP range but it cannot be overwritten by the LAN_private range. So for wireless devices to connect (my wired devices I have fixed IP) I have had to manually code in IP and DNS addresses which is really untidy.
