[andreyua]

I have a dual band router.
Router Model: Dlink DIR-825
Firmware Version: DD-WRT v3.0-r37305 std (10/10/1

Router address in local network: 192.168.1.10
Default WAN Port is used (Internet connection is STATIC or DHCP)

There is also a laptop with hotspot
laptop address: 192.168.137.1

It is necessary that clients from the 192.168.1.0 subnet can go to 192.168.137.1, while the WAN should be with the same settings as before.

Need to enable WLAN interface ATH0? But how to make everything work and WAN not be reset?

[andreyua]

A worthless and useless forum that has proven itself for a long time.

[egc]

If you run an outdated build and ask incomprehensible questions the chance of an answer is minimal

[andreyua]

What is not clear in the question?

[egc]

Is your laptop connected to a hotspot or do you want it to become a hotspot?

What operating system is your laptop running?

How is you laptop connected to your router?

Is your router connected to the internet with is wan port and on its own subnet?

Why are you running an outdated build?

Just some very basic questions.

To give a meaningful answer you have to share more details, preferable a drawing of the network, screenshots etc.

[andreyua]

[egc]

I am not saying a current build can solve your problem better than an outdated build but your build has security issues just as Windows 7 is outdated security wise.

The question is, is the laptop connected to the internet via its wifi to a hotspot or is the laptop itself a hotspot to which other clients can connect?

[andreyua]

[egc]

So I assume your laptop is the hotspot itself to which other clients can connect.

You could research to use the laptops ethernet port and connect that to your router.

You can setup a bridge on the router with the same subnet 192.168.137.0/24 and assign a LAN port to that bridge, that LAN port then connect to your laptop and this will connect the laptop with the router by bridging.

[andreyua]

[egc]

The router can connect to the laptop by using Client mode (there is a wiki for that: https://wiki.dd-wrt.com/wiki/index.php/Linking_Routers ).

But then the WAN is used by the Client mode, so the next thing is to research Dual WAN setup so that you have the Client mode connected wirelessly to your laptop and the other WAN connected wired to the internet there are several wiki's for dual WAN

In theory that is possible in practice not easy

[andreyua]

[egc]

If you had shared that information in the first place it would have saved us a lot of time.

https://wiki.dd-wrt.com/wiki/index.php/Dual%2C_Triple_%28and_probably_quad%29_WAN_with_multiple_active_WAN_links_and_source_routing

[andreyua]

Thanks for the link.
I think I covered all this in my first post.

[Per Yngve Berg]

Why don't you create a VAP and connect all computers including the old hot-spot?