3 routers 1 modem setup

Taylordan1997

Honorable
Dec 19, 2016
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10,510
Hello I have a question about connecting 3 routers to work. I want to connect main router to second router. And second router to third router. If possible. I have only one Ethernet port connected to where I want the other 2 routers to be settled at. I just want to use the second routers wifi and disable the third routers wifi. Basically I just want to use the other routers LAN ports. Is it possible to be in the same network also. Thank you.
 
Solution


"Third around 197.177.300.1"
Well...that won't work...:)

197.177.220.1, maybe.
Anything outside of the DHCP range of router $1.
What bill001g said.

You'll need to directly connect to the other routers and configure its IP to <NOT> be in the IP range of your modem/router's first in service. You cannot do this if you currently have all the routers networked. In other words:

Connect/cable to router 1, view IP settings & dhcp range, note them.
Connect/cable to router 2, set IP outside of router 1's settings. Set DHCP range outside of router 1's range.
Connect/cable to router 3, set IP and DHCP range outside of all of the above.
Connect/cable them all together and power on 1, 2, 3 one after the other, allowing each one to be fully up and running prior to powering on the next.
 
What could be done also is to replace your wifi-less routers with Ethernet switches. Those are very cheap, require no setup and can also be daisy-chained if required. They come in 5, 8, 16 ports. Good luck!
 


I absolutely read his question. Nowhere did he say that he wanted to buy new hardware, that he has a desire to extend his wireless network, or that he wanted additional configuration on the "routers" he currently has. I gave him the quickest path to a functional solution.

There's any number of ways to do what he wants, including buying switches or actually extending his wireless network using his existing equipment. But he didn't ask for that.
 


The problem comes in with your router 2 & 3.
You do NOT want those doing any DHCP functions at all. Let them be passthrough devices, and everything gets their IP address from the DHCP in router #1.
 
I just want lan ports. But I have two routers just sitting around doing nothing. So why not just use their lan port. Just more sense that way.

 


Then configure the routers properly.
Turn off ALL the router functions. Firewall, DHCP, etc, etc.

Connect upstream/upstream through the LAN ports, not the WAN port on the back.
 


Pretty much I want to do what your saying.
So I should first find the IP range of each router. Jot them down to make sure they don't conflict with each other . Also I disabled the other two routers WiFi atm. How about UPnP and the other routers firewalls. Should I disable any of them?
Example:
My default main router IP is 197.177.1.1
So I should put second in the range of 197.177.100.1
Third around 197.177.300.1
The connections as follows Main router to second Router. Second router to Third router. Using LAN to LAN connection. Not WAN to LAN.
 


"Third around 197.177.300.1"
Well...that won't work...:)

197.177.220.1, maybe.
Anything outside of the DHCP range of router $1.
 
Solution


"Basically I just want to use the other routers LAN ports. Is it possible to be in the same network also"

By using the WAN ports as you suggested he ends up with 3 different subnets. By using the LAN ports and disabling routing functions such as NAT/Firewall/DHCP he ends up with everything on the same network (its in the question). An Ip is assigned to Routers 2 & 3 in the same subnet but outside of the DHCP pool of router 1 purely for management access of the device. There are not many ways to achieve what the OP asked for.