How to use a second router connected by ethernet to extend WiFi

[hayesrj]

Can anyone help me with a problem please? I recently upgraded to future fibre so now have a spare TalkTalk router (type: FAST 5364-3.T8). I'd like to use it to help my daughter who has a new garden room which is outside the range of her WiFi from the house. The garden room is hardwired by ethernet cable to her broadband router in the house. I now want to connect my spare TalkTalk router to the ethernet point in the garden room and use it to connect to the internet and provide WiFi in the garden room. Two questions - which port on the router should be used to connect to the ethernet point? And then how do I need to set up the router so that it will access the internet from the main router in the house? Thanks so much.

[KeithFrench]

Hi Richard,

Sorry, there is one thing I forgot, you will have to change the IP address of the Sagemcom to an IP address on the same network as the BT router, which is outside of the DHCP server on the BT router. I cannot help you with checking what the BT router is configured to.

Perhaps we had better start with screenshots of the BT router's LAN IP address & DHCP server's configuration so that I can advise you of a suitable address to use.

[hayesrj]

Thanks so much for getting back to me so quickly Keith! I will need a bit more detail I'm afraid. I do know how to login to the 5364 by using the 192.168.1.1 address. Can you please explain what I then do next? How do I disable the DHCP on my router? And how do I change the WiFi passwords? (Sorry if I should know all this...). Also - sorry, I should have mentioned that my daughter is on BT, so the primary router (in the house) is a BT one, but I am assuming that shouldn't make a difference? (Also, do I have to change any settings or anything on that primary router, or just on my TalkTalk one which will be the secondary one?).  Thanks again and best regards, Richard.

[KeithFrench]

Disable the DHCP server in the 5364, set the WiFi network names (SSIDs) and WiFi passwords to the same as the other router. You need to set the WiFi channels to no conflicting ones (I can help more with this). However, it is often a good idea to get TalkTalk to disable their Wi-Fi Optimisation on it first. Now connect them up via their Ethernet LAN ports.