I have two internet connection at my house - VDSL (Vodafone) and 4G (Also Vodafone, recently switched from 3).
Due to my rural connection, the VDSL only gets 15mbps down 1mbps up, where the 4G is 40mbps down and 10mbps up.
I would dump the VDSL, but the 4G really struggles with multiple connections (internet hungry family). So the 4G is used for large downloads and streaming (Netflix 4K etc), and the VDSL is for gaming and general browsing, where less data but lower latency is needed. Both connections work out to about £50 per month in total, which is less than BT were charging us for broadband only until last year.
I was running them as two completely separate networks until recently, using the ISP provided VDSL router and a Huawei b525 (plus some wifi AP's). This was o, but did cause a bit of confusion at tine when people swapped between networks - "dad, the printer won't work again!!!" etc etc.
I now have an Asus AX88u router that supports dual WAN. I have also got a Draytek 130 Modem, but still using the 525 for 4G (double NAT, but so far not caused any issues). Both connected to the Asus in a load balancing config.
The good thing about the Asus is that I can set certain devices to only use one specified WAN connection. So data heavy devices (Nest cams, smart TV's, etc) only use 4G and gaming PC used VDSL (for better ping etc). Thing like smart phones just left to use whatever the router decides at the time.
It was actually surprisingly simple to set up, I'm and by no means an expert (things like port forwarding and subnets still confuse me at time) - you just add the IP address to a 'rules' list, and chose primary or secondary WAN. It's also important have static/manual IP's, but that's also very simple.
It's great to finally have one single unified network. All devices talk to each other, but I can chose which internet connection that use. So far, it's working well (touch wood).
* The only downside so far is that the Vigor 130 is slower on the download than the stock VF Wifi hub (15mbps vs 20 mbps), which is otherwise pretty mediocre. I have tried tweaking the SNR settings on the 130, but that results in frequent disconnects. I don't know why the VF hub is so much better (unless the speed will adjust with time). If anyone has any ideas I would love to know!
Edited by deleted (Mon 05-Apr-21 10:53:32)