Originally Posted by DonWie63
Second ASUS RT-AC66U Wireless 802.11AC Router setup up as Wireless Bridge
1) is the WAN port of the second RT-AC66U unused? I don't know about the RT-AC66U's explicit bridge mode (right? explicitly a user choice in their setup screens?) The WAN port is normally used for the routing functions - and a bridge has none. If this is hosed up, it can cost throughput because you'd be double-NATing, etc.
2) The two need to be on channel numbers separated by at least 3 channel numbers so there's no competition for use of the channel. And at close range, this will be more pronounced and perhaps even more channel number (RF freq) separation is needed if distance between the two is less than about 50 ft. and they are line of sight.
I'd put my NAS on the first router's LAN port, for sure. If not, I'd avoid it going over WiFi and use MoCA or HomePlug/power wiring bridge if you just *cannot* use the 1st router or get cat5 cable to where you must have located the NAS.