D-link and TP-link working together?

Question

network hardware

Hello.
Approximately in 2009 connected the Internet. At the same time, a computer and a D-Link router (model: DIR-100) (without wi-fi) were bought.
Last year I bought a TP-Link wireless router (model: TL-WR841N).
Since the cables were run from D-Link to all rooms, I decided to install TP-Link at my place. I calmly set it up, everything worked.
Over time, he moved to another room, and TP-Link decided to leave it there for his parents.
I recently bought TP-Link (model: TL-WR940N) for myself, so that it would be clean in my room.
But, I thought that these routers would be too much. I decided to set up TP-Link (Model: TL-WR940N) and install it instead of D-Link (Model: DIR-100). But I can't set anything.
What is most interesting is that this is how it works:
D-Link (Model: DIR-100) --> TP-Link (Model: TL-WR841N) --> TP-Link (Model: TL-WR940N)
But if so, then no: TP-Link (Model: TL-WR940N) --> TP-Link (Model: TL-WR841N).
In other words, I want to replace D-Link (Model: DIR-100) with TP-Link (Model: TL-WR841N).
Please tell me how to be.

Answer 1

I once used two routers: the first one received the Internet from the usb modem and distributed it to the second router, the second one was already distributing the Internet via Wi-Fi and by wire. As I understand it, you are talking about an apartment, but I don’t really understand the need for two or more routers. The reception level from one router should be enough to cover one apartment, well, TP-LINK 1041 is enough for me for a three-story country house.
If you still need to use several routers, then first determine why it is necessary and how it will work. For example, which router will be used as a DHCP server (distribute local ip addresses), because there are two options: router 1 acts as a dhcp server, the second router is a simple splitter. Or both routers will be dhcp servers - so you can isolate the local network of your room from the parents' local area, but is it necessary?)))
Then, which of the routers should distribute wifi? And if both, how? Should it be one network with two access points or two different networks?
In any case, I advise you to start such experiments by resetting the router settings to factory settings.

Answer 2

You need to start not with a stupid connection, but with a network diagram, how and what will be connected, with what ports.
I recommend making one router "main", for example, local IP 192.168.1.1 and it will also distribute addresses via DHCP (for example, from 192.168.1.10). For the rest of the routers, manually register 192.168.1.2 and 192.168.1.3, and MUST disable the DHCP server on them! Connect LAN to LAN.