Deco M9 Plus Ethernet backhaul issue

Deco M9 Plus Ethernet backhaul issue

Deco M9 Plus Ethernet backhaul issue
Deco M9 Plus Ethernet backhaul issue
2022-05-09 14:39:39
Model: Deco M9 Plus  
Hardware Version: V2
Firmware Version: V2&V2.2_1.5.6_211018

I recently purchased M9Plus and plan to use wired Ethernet to connect all 3 units. But when I try to connect it via ethernet, the units go down in a minute and shows no Internet in Deco app. I tried to remove the switch and just connect Deco 1 and 2 via ethernet cable and 3rd using wireless but again the system goes down in a minute showing no internet. Decos work fine when all units connected via wireless backhaul. I have configured all deco as Operation mode = router. I have upgraded to latest firware and same problem. What could be the issue? See pic below. I thought switch could be the issue so I removed switch and connected Dec and 2 via direct ethernet cable and deco 3 via wireless. Same issue, system goes down within a minute. Can someone help identifying the issue? Thanks you.dd14732048fa4a2d8f9af8ee47a44f88

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#1
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10 Reply
Re:Deco M9 Plus Ethernet backhaul issue
2022-05-10 12:00:30

  @Boss2 

Hi, there should be no problem with "option 2".

On "option 2", when APP reported no internet, would the main M9 go red? or any Deco go red?

May I know the model number of your cable model?

By the way, who is your internet service provider?

Best regards.

Wi-Fi 7 Launch Replay: https://www.tp-link.com/us/wifi7/event | Leave me a message with any Urgent Requests, or Simply Feel Left Out
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#2
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Re:Deco M9 Plus Ethernet backhaul issue
2022-05-10 14:31:39

  @David-TP 

In both options all 3 Decos go Red. I am using FIOS ethernet (no cable modem or coax), Ethernet coming to house from FIOS NIC. 100Mb connection not Gigabyte etc.

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#3
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Re:Deco M9 Plus Ethernet backhaul issue
2022-05-11 07:35:35

  @Boss2

 

3150522Hi, I had similar problems, backhaul and somtimes loosing wifi connections. I had multiple TP-Link switches, all of them TL-SG105E, and they are all configurable. That was the problem, backhaul and wifi without any problems disconnecting the TP-Link switches and as I now know the switches should be configured in a special way in order for them to work in connection with Deco M9 Plus, at least so it is in my case. Although using the stated example in Deco FAQ:s using configurable switches like TL-SG105E I gave up and replaced all the TP-Link switches with cheaper and more simple ones, and voila(!), now backhaul works like a charm and no wifi drop-outs.

 

Maybe this will help you. Good luck.

 

/Jannek999  

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#4
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Re:Deco M9 Plus Ethernet backhaul issue
2022-05-11 18:23:33

  @Jannek999 

I am testing option II ie without a switch just connect first deco to ISP and second Deco via ethernet from first one (no switch involved), same issue. The switches are fine as they work fine with my existing non mesh Asus router.

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#5
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Re:Deco M9 Plus Ethernet backhaul issue
2022-05-13 08:38:20

  @Boss2 Thanks for the update. I would like to forward your case to the senior engineers for further assistance.

Please check whether you have got an email from us.

Thank you again.

Best regards.

Wi-Fi 7 Launch Replay: https://www.tp-link.com/us/wifi7/event | Leave me a message with any Urgent Requests, or Simply Feel Left Out
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#6
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Re:Deco M9 Plus Ethernet backhaul issue
2022-05-13 19:14:28

  @David-TP I have reached out to tech support via website. Thanks. 

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#7
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Re:Deco M9 Plus Ethernet backhaul issue
2022-08-28 16:15:28

  @Boss2 Did you ever get a resolution, I am having a similar issue with m9 ethernet backhaul

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#8
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Re:Deco M9 Plus Ethernet backhaul issue
2022-08-29 14:35:52

  @TpNewb Try deleting all the Decos and re initiate the setup with 2 decos, one (main) and second connected via Ethernet and then set up the system via app. After first 2 are successful, connect 3rd one with ethernet and add it via app. Let us know if this helps.

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#9
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Re:Deco M9 Plus Ethernet backhaul issue
2022-08-29 23:28:59

  @Boss2 What happens if just one of the secondary Decos is connected to the switch and 3rd is wireless?  Main one should stay on the switch too.

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#10
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Re:Deco M9 Plus Ethernet backhaul issue
2022-08-30 14:34:09

  @SMRTech That combination should work. Start by configuring main Deco (either direct to ISP or via switch) first, then add the secondary Decos whic is connected to the switch. Then run the setup again to configure 3rd is wireless Deco. Report back if this process works. 

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#11
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