Two routers have the same ip address.

[niexin_liu]

Hi Everybody，I have a question, who can help me？

I have two routers, they have the same lan ip 192.168.13.1.

Can anyone tell me how this is implemented?

They have the same lan ip, why PC can connect to the Internet？

Two router don't disable dhcp server.

 

[White Lancer]

Are both routers connected to the internet?
Could you give more information about how your network is set up? ie what are the routers connected to? Do you have any switches and what are they connected to? Etc...
You can use the command prompt command "tracert" to see what route you are using to get to different devices, this might help you to see what is happening in your network.

 

[niexin_liu]

Are both routers connected to the internet?
Could you give more information about how your network is set up? ie what are the routers connected to? Do you have any switches and what are they connected to? Etc...
You can use the command prompt command "tracert" to see what route you are using to get to different devices, this might help you to see what is happening in your network.

Typically, routers LAN IP is 192.168.1.1. I have a second router, LAN IP is 192.168.1.1, I hope it will not change the secondary router's LAN IP(Don't change to 192.168.x.1), you can access the Internet directly.

RouterA LAN IP: 192.168.1.1
RouterB LAN IP: 192.168.1.1

RouterB's WAN Port connected RouterA's LAN Port.

I hope PC connected RouterB can access Internet.

The OpenWRT firmware already implemented this feature, but I don't know how to implement.

 

[Kewlx25]

Two devices should never have the same IP address. If it works, it's only because someone didn't implement their network stack correctly. It is a situation that should never work.

 

[White Lancer]

Kewlx25 is correct that 2 devices on the same network shouldn't have the same IP address as it will cause a conflict.
However since your network seems to be working I think that the reason might be that by connecting the routers together using the WAN port you may have added Network Address Translation into the mix. Router B's address might not be the same as Router A's from the perspective of Router A's network. You might be dealing with 1 network (Router B) that is inside another network (Router A). I can't say that I've come across that sort of situation before so that's a bit of a guess.