Can't all be wrong as I have active wifi across all three structures on my property. Not sure why AT&T would charge me for expanding my home wireless network??? They haven't so far. LOL... The AT&T gateway is being used as the first router and my network was set up using the following steps:
Set up this router as normal. In the wireless security settings of the router, disable Automatic Channel selection and manually set the channel to channel 3.
In most cases, this router must be wired to the original router. Consider a wireless media bridge or by running a single network cable in this case to the other location.
Disable the DHCP server on this router to prevent IP conflicts or network configuration issues allowing only Router 1 to manage the network.
Manually set the IP Address of this router to 1 number higher than the existing main router, for example if your router IP is 192.168.1.1, set this router to 192.168.1.2. Plese make sure this address is out of the 1st router's allotment of addresses for DHCP distribution. If not, please make a DHCP reservation for this router's address in the router 1's DHCP table.
Set the Internet Gateway of router 2 to router 1's IP address.
Connect the two routers using a wired connection from any of port 1-4 in router 1 to any of port 1-4 in router 2. You can use a Wireless Media Bridge or Powerline Ethernet Kit to create a wired connection. DO NOT use router 2's WAN port.
In the wireless security settings of this router, disable Automatic Channel selection and manually set the channel to channel 8 - or any other channel not being used by the main router or any other router on this network (it is possible to set more than two routers for really large areas).
Set up wireless security to be identical in router 2 as it is in router 1
I used same method for the second netgear router, I am not currently utilizing the third.
My issue is not that my wifi isn't working, it's that the netgear routers have basically lost their identity on my network and I am unable to use their DLNA feature. My previous setup was not with AT&T and my netgear router was managing the network. When the netgear manages the network, I can connect a usb drive to it and access the media on said drive via any capable device connected to my network.
Basically, I need to know if I can take management away from the AT&T proprietary gateway and give it to one of my netgear routers??? If so, I need to know the steps to do so???