@gmoney63 

In Main Building you will need to connect Deco X20 to TP-Link Archer with  Ethernet cable. Deco X20 will not communicate wirelessly with TP-Link Archer router.

In Out-Building-2 Decos will be fine as long as Adalov Outdoor wireless bridge supports Deco Ethernet backhaul protocol. I can't tell if it does, but you can test it with X20s you already have.

To test, connect Main Deco X20 in Main Building with Ethernet cable to Archer router, and connect Adalov bridge to Main Deco. In Out Building 2 connect Satellite Deco X20 with Ethernet cable to Adalov bridge. If Satellite Deco reports Ethernet backhaul link, everything should work with your setup in that building when you bring X55s.

Your Main Deco should be hardwired to TP-Link Archer, which means it'll be either Deco from Out-Building-1 or Deco from Main Building that you must hardwire to Archer router.

  @Alexandre. 
 

Hi Alexandre

Thank you so much for the quick reply.

If you will allow me to, I will provide a little more context / details on this.

The farm had a couple of things in place when my brother-in-law bought it and I probably should have mentioned that.

I guess first I should mention that, he purchased the AX5400 router last week and it is still in the box.

So he is currently using the Telco modem / router to do all of the routing, DHCP etc.

The connectivity to Out-Building-1 is already established by a hardwired cat5e cable from the Telco modem/router in the Main Building to a Deco X20 in Out-Building-1.  The out buildings are quite large so there are actually 3 Deco X20s in Out-Building-1 but only one that is wired directly into the router in the main building.

There is no connectivity established in Out-Building-2.

In the current setup, there are 2 WiFi SSIDs.  One SSID from the Telco WiFi in the main building and another different SSID in Out-Building-1 from the Deco X20.  So my brother-in-law purchased the AX5400 and the Deco X55s to extend the network to Out-Building-2 but also hoping to have a single SSID across all buildings.

In addition, my brother-in-law is looking to go with Starlink because the Telco service to his rural property is very slow and has poor reliability.

My brother-in-law thought (perhaps incorrectly) that if he purchased the AX5400 and the Deco X55s he could put the Telco (or Starlink if / when he gets it) into bridge mode or bypass mode and have the AX5400 do all routing and WiFi services including being able to have a single SSID across all three buildings.

I have not been able to determine if the Adalov wireless bridge supports backhauling but I have raised a ticket with their support team to find out.

If it does not support backhauling what would he have to do to extend the network out to Out-Building-2?

Thanks so much for all your assistance.

Greg M.

  @gmoney63 

In that case, I would suggest to return TP-Link Archer router back to seller for refund. It will not join Deco mesh.

I would recommend the following setup: use ISP provided router (Telco or Starlink) in its default configuration. Configure Deco mesh to run in Access Point mode. Turn off Telco/Starlink router WiFi. You will only have SSID from Deco mesh. 

Note that you will need Starlink hardware that has Ethernet port to connect to. I am not very familiar with Starlink but I think they have different hardware (that works as router), with and without Ethernet port. You will need Ethernet port to hardwire Main Deco to it.

If outdoor wireless bridge does not support Deco Ethernet backhaul protocol, the only option I can think of will be to replace it with different wireless bridge brand, the one that supports it. TP-Link brand should be safe choice.

The Deco Ethernet backhaul feature is based on the standard IEEE 1905.1 protocol. I suggest you update your support ticket with Adalov (or create new one) to specifically ask if their product supports IEEE 1905.1 protocol.

  @Alexandre. 

Hi Alexandre

I want to thank you once again for your guidance so far.  It is very much appreciated.

I have taken your advice and posted the IEEE 1905.1 protocol question to the Adalov tech support team and I am waiting for their reply.

In the meantime I have informed my brother-in-law that he may have to return the AX5400 router and he may not be able to re-purpose the existing Deco X20 devices and as well.

If he is forced to completely redesign his topology can you suggest what TP-Link (or otherwise) gear that could satisfy the goal of getting a single contigous wireless (for the most part) network in place (ie. single SSID) so that whenever he or his employees move from building to building they stay seamlessly connected to their wireless network?  

Each building depicted in the attached diagram is quite big and requires multiple access points to ensure adequate coverage.

When looking at the attached diagram, is there a device (router, extender, access point - preferrably TP-Link) that can be deployed into the out-buildings that would satisfy the desire for a single SSID.

I realize that the Adalov bridges (antennas) are a bit of a wild card but if you were faced with this, could you recommend gear / configuration that could satisfy this setup?

Thanks once again 

Greg M.

  @gmoney63 

Below is setup that I would propose in your case, assuming wireless bridge supports Deco Ethernet backhaul and provides stable link between buildings.

For Main Deco I would suggest Deco X50 or Deco X55. For Satellite Deco, it could be X20, X50, X55 or even X10 if area to cover is not large.

Deco mesh must run in Access Point mode: Switching a Deco to Access Point (AP) Mode

ISP Router WiFi must be turned off (as reflected in updated picture). If single Main Deco does not provide sufficient WiFi coverage in Main Building, you may need to add Satellite Deco there, and preferably connected by Ethernet cable to either ISP Router or to Main Deco.

  @Alexandre. 

Thanks so much once again Alexandre.

Just for some additional clarity ...

if the ISP modem / router is in bridge (bypass) mode and the Router is doing the routing and DHCP functions etc. then what is the main deco's function other than being an access point within the main building?

In other words, what is the differentiation between a satelite Deco and the Main Deco?

Thanks for your continued patience.

Regards

Greg M.

  @gmoney63 

In Deco mesh one of the Deco must be hardwired to ISP modem/router. This makes it Main Deco. In Access Mode Main Deco does not differ much from Satellite Deco. Main Deco keeps performing Deco mesh management functions, also in case you change Deco Operation Mode back to Router you will not lose access to Deco mesh. Your Main Deco in Router mode will be one hardwired to modem/router and if there is more than one Deco hardwired you'll know which one will be Main Deco as it makes the difference when Deco mesh runs in Router mode.

  @Alexandre. 

Hi Alexandre.

That is very valuable information.  Thanks so very much for all your help.
In the described topology would there be a single SSID throughout all buildings?
Also would the TP-Link AX5400 router work as the main router?

Thank you once again and have a wonderful weekend.

Regards

Greg M.
 

  @gmoney63 

>In the described topology would there be a single SSID throughout all buildings?

Yes, there will be single SSID from Deco mesh.

>Also would the TP-Link AX5400 router work as the main router?

Yes, it will. Note that you must disable WiFi on TP-Link AX5400 to make sure it does not conflict with Deco mesh WiFi signal and SSID.

  @Alexandre. 

You're awesome. 

I can't thank you enough for your assistance.

Have an awesome weekend.

Regards

Greg M.