How to create a triple router network without access to the main router?

How to create a triple router network without access to the main router?
How to create a triple router network without access to the main router?
2021-04-14 18:15:13 - last edited 2021-04-14 23:38:38
Model: TL-WR820N
Hardware Version: V1
Firmware Version: 1.0.2 Build 190905 Rel.42436n

I'll try to be as direct as possible here!

I have 3 routers:

  • 1 is from the ISP, which I'm not allowed to access its configurations!
  • 2 TP-Link ones (TL-WR820N V1 and a TL-WR740N V4) to expand the signal

 

  • The 820N is connected through cable to the ISP, and the 740N is cabled to the 820N!

 

  • The 820N only has Wireless devices connected to it, but the 740N has 1 Wireless and 2 cable devices connected!

 

How can I create a network without accessing the main router (by accessing I mean entering the configurations, but I do have physical access to it) and without causing conflict?

 

 

I also have another question, what's the best TP-Link router for my current internet?: 200MBPs Down, 100 Up, I don't really need a strong signal, since the devices are close, but I definitely need one with a 5GHz band!

 

 

 

 

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Re:How to create a triple router network without access to the main router?-Solution
2021-04-14 21:56:07 - last edited 2021-04-14 23:38:38

@zDavzBR 

 

To be able to use all 3 devices without conflicts, I would configure the 820N and 740N in manual AP mode using this guide.

The IP address for the 820N set static - 192.168.X.254 and for 740N set static - 192.168.X.253. Both with DHCP server disabled (using the ISP router's DHCP server for clients).

"X" is the 3-rd octet of your ISP router LAN IP address (assuming it's 192.168.X.1).

Thus you'll have the ISP router and 2 APs, extending your wireless/wired network and avoiding double NAT.

 

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Re:How to create a triple router network without access to the main router?-Solution
2021-04-14 21:56:07 - last edited 2021-04-14 23:38:38

@zDavzBR 

 

To be able to use all 3 devices without conflicts, I would configure the 820N and 740N in manual AP mode using this guide.

The IP address for the 820N set static - 192.168.X.254 and for 740N set static - 192.168.X.253. Both with DHCP server disabled (using the ISP router's DHCP server for clients).

"X" is the 3-rd octet of your ISP router LAN IP address (assuming it's 192.168.X.1).

Thus you'll have the ISP router and 2 APs, extending your wireless/wired network and avoiding double NAT.

 

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Re:How to create a triple router network without access to the main router?
2021-04-14 22:16:53

@terziyski Should I put static in the Wan part? Because there's only automatic and manual in the Lan part!

The main router IP Address to get to its login page is 192.168.1.1, so the X in your answer should be 1 right?

 

Now, just being curious, why should I put the 820N at 254 and the 740 at 253 even though the 820N is the second router and the 740N is the third, also, is there a reason to put the number at this 253 range, or is it just a random number? Sorry for so many questions, I just wanna understand the subject.

 

 

 

 

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Re:How to create a triple router network without access to the main router?
2021-04-14 22:53:04 - last edited 2021-04-15 03:57:22

@zDavzBR 

 

No. In this scenario you are working only with LAN port settings on both devices. Yes X=1.

WAN port settings of 820N and 740N are irrelevant.

It doesn't matter which one is first or second, if you like you can swap these values (254 and 253).

These are not random numbers - 253 is a next to the last and 254 is the last valid 4-th octet in an IP address of class C network (which you use for LAN subnet - 192.168.1.0/24).

This will guarantee (if the ISP router for example have DHCP server range configured - 192.168.1.100-192.168.1.199) that your APs have the last two LAN IP addresses configured in this subnet (192.168.1.253 and 192.168.1.254) and these won't overlap with any of the devices that receive their IP addresses from ISP router's DHCP server.

For wireless security settings on both devices make sure you are using these:

Security: WPA/WPA2-Personal

Version: WPA2-PSK

Encryption: AES

 

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Re:How to create a triple router network without access to the main router?
2021-04-14 23:36:44 - last edited 2021-04-14 23:38:20

@terziyski Thanks a lot for the info! Hopefully, this solves the random disconnects that were happening.

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