Guys, first post and apologies as I am a total newbie and if this has already been addressed.
New build house with pre installed ethernet cabling etc. ONT and main wifi modem in the garage.
Lounge and Office patched to the modem through the inbuilt ethernet. The problem is that the wifi in the garage doesn't extend upstairs so hoping to use an old Vodafone HG556a modem as an extender in one of the bedrooms. I have this patched to the main modem via ethernet however don't understand how to set this up correctly on the same network.
Any help would be appreciated.