Two ISP in same network, and choose whatever you like instantly (AX68u)

[drinkingbird]

Ok, manually switching off primary wan won't switch to secondary wan

Try unplugging the cable (both for fail over and fail back). If it works reliably, get yourself a couple smart plugs. You can even set up a timed routine to automatically switch over at a certain time and switch back later.

But if it were me I'd be fighting and escalating with the ISP. They are clearly saturating their bandwidth. If it is 600/600 I'm assuming it is fiber which means they can just groom you over to a different fiber on your street and hopefully alleviate it. Unless it is somewhere further upstream in which case they have even bigger problems they need to solve, and I'm sure you're not the only one complaining.

 

[SwizItalo]

When I had a primary (personal) and a secondary (work) ISP, I just setup both routers in the same subnet (with unique IP addresses of course). I would then just switch my default gateway to whichever one I wanted to use.

That is the only practical way i found. Thank you

 

[SwizItalo]

ISP 1: 192.168.100.1 DMZ TO 100.4
ISP 2: 192.168.100.2 DMZ TO 100.4
ASUS: 192.168.100.4 (WAN)

So changing a number in the asus gateway i automatically change ISP keeping the port rules.

I'm happy with this solution. Thank you people

 

[drinkingbird]

View attachment 53166
ISP 1: 192.168.100.1 DMZ TO 100.4
ISP 2: 192.168.100.2 DMZ TO 100.4
ASUS: 192.168.100.4 (WAN)

So changing a number in the asus gateway i automatically change ISP keeping the port rules.

I'm happy with this solution. Thank you people

Not pretty but it works