Good afternoon (well, it is in the UK
) and I apologise in advance if this question has been raised before (because it probably has) but I don't know where to look!
I've just replaced my RT-AC66U B1 running the house LAN & WLAN with a new RT-AX86U Pro (from Amazon) and the system is now running again (a bit of a faff, that was!), and I'd now like to add the old RT-AC66U B1 to the system in Mesh mode in preparation for a house move (somewhere which we haven't even chosen yet) in another area, and where it'll be "all wireless" for at least some time (and that would probably include using a USB modem with a 3G/4G SIM card in the router until I get a solid cabled connection of some sort).
Therefore can anyone point me to some articles/webpages (on this forum or elsewhere) on how to do the meshing - AND the pitfalls I could /probably will encounter!
NB: I already found quite a few and will be trying to understand them as well as I can, but I've almost certainly missed the most relevant ones!
I'm certainly no networking expert by any means, but (so far!!) I'm not asking for "hand-holding" with the task but any general/specific guidance will be most appreciated!
OTOH, if anyone thinks this whole exercise will be a waste of time, then please say so as I don't want to lose any more hair or sleep over it than I have to!
Thanks in advance
John

I've just replaced my RT-AC66U B1 running the house LAN & WLAN with a new RT-AX86U Pro (from Amazon) and the system is now running again (a bit of a faff, that was!), and I'd now like to add the old RT-AC66U B1 to the system in Mesh mode in preparation for a house move (somewhere which we haven't even chosen yet) in another area, and where it'll be "all wireless" for at least some time (and that would probably include using a USB modem with a 3G/4G SIM card in the router until I get a solid cabled connection of some sort).
Therefore can anyone point me to some articles/webpages (on this forum or elsewhere) on how to do the meshing - AND the pitfalls I could /probably will encounter!
NB: I already found quite a few and will be trying to understand them as well as I can, but I've almost certainly missed the most relevant ones!

I'm certainly no networking expert by any means, but (so far!!) I'm not asking for "hand-holding" with the task but any general/specific guidance will be most appreciated!
OTOH, if anyone thinks this whole exercise will be a waste of time, then please say so as I don't want to lose any more hair or sleep over it than I have to!
Thanks in advance
John