@terziyski brilliant - thank you so much for taking the time to reply. i'll get on it

I have an Archer C6 (ac1200) as my main dhcp server wifi router, and to improve wifi coverage added an Archer C1200 connected by Ethernet. Their main specs and features are broadly similar, both dual...

I have a new installation of 600mb fibre optic. I have the service provider's supplied 4 port dual band router. Which has the fibre cable input. I also have a brand new in box Trust Archer C6 router....