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Forum Discussion
FBFeins
Nov 30, 2025Aspirant
Nighthawk AC1900 Smart WiFi Router (R6900P) in AP Mode, Second R6900P
All connections are Ethernet. Buried Ethernet and feeder cable to buildings #2 and #3; Ethernet and utility feeder cabling are ~12" separation as appropriate. Router is Nighthawk X6S, AC3600 (Mo...
StephenB
Dec 01, 2025Guru - Experienced User
FBFeins wrote:If I connected a device via 4-integrated Ethernet ports, it would treat that R6900P as a switch, Correct?
Yes, the LAN ports on the R6900P function as a switch.
It would be useful to connect a laptop to the ethernet going into the WAN port of the router, and then run a speedtest. Either speedtest.net or speed.cloudflare.com will work. That will confirm that the feed to the building is working correctly.
FBFeins wrote:Reading this morning I realized they were on the same Channel and Mode by my genius restore!
How far apart are the two buildings? What is the construction? Can you get a connection to building 2 from building 3 when you have the new AP turned off?
Normally you won't get much (if any) wifi interference unless the buildings are quite close.
FBFeins
Dec 01, 2025Aspirant
First, *THANK YOU* for sharing your knowledge. Buried Ethernet is functioning properly; I ran speedtest.net a number of times and it was consistent and throughput was ~as expected. (I have an upgrade kit to 1GB that I haven't implemented; I think Frontier is purposely degrading current service to force the issue. These kind of problems are what concern me.) And on top of it all, running on generator my UPS didn't warn me it wasn't accepting generator power, ran dry and my desktop died. Died like it won't boot except in Repair Mode (which is useless.) It's under warranty so I'm not terribly concerned, just inconvenienced. (I happened to do a backup just last week, ... If it took.) Dell-Costco support is very good; I had to use it once before. Here's a 'stupid' question: Connected directly to the router, why is everything soooooo slow? Consistently.
When it finally gets me into wireless settings I can move forward and report my/any progress. Coffee, dinner then back to my routers issue. THANK YOU for your time and consideration. MUCH appreciated. Expecting snow in the morning and I had a trailer full of 4-yards of wood chips to unload. The last yd will wait until the morning. F