How to set up Ethernet Backhaul with your Deco devices

How to set up Ethernet Backhaul with your Deco devices
How to set up Ethernet Backhaul with your Deco devices
2017-07-11 14:15:12 - last edited Monday
Model: Deco M5
Hardware Version:
Firmware Version:

Ethernet Backhaul is a feature that makes it possible to wire the Deco units together to optimize the bandwidth and network stability.
Normally, after wired Deco units with an Ethernet cable, the Ethernet backhaul will take effect automatically. 


Here are some typical connection structures for Ethernet Backhaul:

Notes:

1. Please note that the main Deco unit will act as an NAT router by default.

2. Please set up the Deco units on the same network at first through the Deco app before you wired them together.

3. Please ensure there are no other DHCP servers behind the main Deco. Otherwise, it will cause other Deco units getting an invalid IP address which doesn't have internet access.

4. If you have switches on the network and find Ethernet Backhaul not working, please check the management IP address of your switches. It seems that some switches adopt the same management IP as the LAN IP address of Deco, which may cause some conflicts on the network. In this case, it's recommended to change the management IP address of switches to another one.

 

Frequently Ask Questions

Q1: Can I connect all the Deco units directly to my home modem/router?

In Router mode:

Only the main Deco could be connected to your home modem/router. Other satellite Deco units should be connected behind the main one, just as the “Star Network” shows. If not, they may be in a network loop and cause unexpected dropout issues.

In Access Point mode:

You can connect all the Deco units directly to your home modem/router/switch as you want. The system will work as expected.

 

Q2: To use the Ethernet Backhaul feature, do I need to wire all my Deco units?

Nope. You can set up one for wireless backhaul, and the other one for Ethernet backhaul as you want.

For example, if you have three Deco units and want to create Wi-Fi not only in your living room and bedroom but also in the office, which is a little far away from other rooms and has no Wi-Fi coverage. Then you can put the main Deco and satellite Deco 1 in your living room and bedroom (wireless backhaul). As for satellite Deco 2, you can place it in the office with a long Ethernet cable connected to the main or satellite 1 unit. In this case, the satellite 2 unit will work through Ethernet backhaul, while the main and satellite 1 will work through wireless backhaul.

 

Q3: How do I know if Ethernet Backhaul takes effect?

Note: Currently, only some Deco models support this feature, other models will support this feature via firmware updates in the future.

 

Q4: Why my Deco units become unstable once they're connected via a switch?

It's probably that you're using a D-Link switch.

The Deco Ethernet backhaul feature is based on the standard IEEE 1905.1 protocol. However, we find that some D-Link switches will not forward packets based on IEEE 1905.1 protocol, causing all Deco units in a network loop and becoming quite unstable. If you have a D-Link switch and encounter an unstable issue with Ethernet backhaul, we recommend to change the switch to another brand or contact D-Link support directly for a fix.

If you're not sure which switch to use, TP-Link switches may be a good choice.

 

Q5: Why my satellite Deco's signal source shows "Wi-Fi" instead of "Ethernet" in the Deco app even if the main Deco and the satellite Deco are connected to the same switch?

1.Please try connecting two Deco units directly by using one Ethernet cable, bypassing the switch. If the Ethernet backhaul is successfully established, proves that the switch might have some issues working with Ethernet backhaul, you might consider changing another switch. TP-Link Switches are mostly compatible with our Deco’s Ethernet backhaul.

2. If the satellite Deco still shows Wi-Fi signal source after connecting them directly, it means that one of the Deco units might have issues, please contact us.

 

Q6: Can I set up different Deco models such as M5 and M9 Plus together through Ethernet backhaul?

 

Yes, just configure and add different Deco models in the same Deco network. After that, you can wire them to set up the Ethernet backhaul connection.

You could refer to the link to know how to add different Deco models in the same network.

 

Q7: What can I do if the Ethernet backhaul is not taking effect?

  1. Try a different port on the Deco.
  2. Try a different Ethernet cable.
  3. If the Deco units are connected to a switch, please connect them directly bypassing the switch for a try. We have found that some switches (such as D-Link switches) cannot handle the Ethernet Backhaul packets between Decos properly.

 

Q8How to turn off Ethernet backhaul on the Deco?

You can disconnect the Ethernet cable between Deco units to disable the Ethernet backhaul.

 

Q9: Can I use one Ethernet port on the Deco for Ethernet backhaul and the other to connect a computer?

Yes. 

Note: On the main Deco, one Ethernet port should connect to the modem/router to get internet, the other Ethernet port can be used for Ethernet backhaul, or connect to a computer.

 

Q10: Can I wire Deco via Ethernet cable on different floors?

Yes, but you need to pay attention to the working mode of the Deco.

When the Deco system works in Router mode, only the main Deco can connect to the modem/router directly.

 

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1 Accepted Solution
Re:How to set up Ethernet Backhaul with your Deco devices-Solution
2021-07-07 01:46:39 - last edited 2021-07-07 01:54:33

@TheRealMihi 

Hi, the information on this thread has been summarized on this FAQ:

https://www.tp-link.com/support/faq/1794/

For your issue, it is more like the Q4 and Q5 mentioned on the above link;

Thank you.

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337 Reply
Re:How to set up Ethernet Backhaul with Deco M5
2017-07-11 15:01:05 - last edited 2019-10-09 03:27:45
Dear TP,Is is strictly necessary for AP's to be in WiFi range of at least one other AP when they are connected by Ethernet as well?
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Re:How to set up Ethernet Backhaul with Deco M5
2017-07-11 15:06:13 - last edited 2019-10-09 03:27:45
Nope, once the Deco units are wired together, they will communicate with each other directly via the wired connection bypassing Wi-Fi.

You can have a check on your side.
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Re:How to set up Ethernet Backhaul with Deco M5
2017-07-12 02:53:37 - last edited 2019-10-09 03:27:45
Does it matter which port on the DECO we use to connect to the wired switch? And can we then hang another switch off the 2nd/3rd/4th deco and pass wired traffic to those devices?
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Re:How to set up Ethernet Backhaul with Deco M5
2017-07-12 03:55:05 - last edited 2019-10-09 03:27:45
Ethernet backhaul is NOT working for me can you please help?
Here is my setup:-
Model:-> Deco 5 :-> Gigabit Switch 1:-> Gigabit Switch 2:-> second Deco 5 (Not working)
l-> Third Deco 5 (Not working)
If I connect my older Asus router in Access point mode in place of second deco 5 or Third Deco 5 my Asus router works in Access point mode.
Can you please give us detailed steps regarding how I can connect.
When I try resetting 2nd or 3rd deco it blinks blue and try to connect but gives some error error.at the end.
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Re:How to set up Ethernet Backhaul with Deco M5
2017-07-12 08:56:34 - last edited 2019-10-09 03:27:45
@rebirth24
Yep, you can do like that. Just make sure all the data from 2nd/3rd/4th Deco units are finally forwarded and processed by the main one.

@santoshhyadav
Have you tried to connect the second Deco directly to the LAN port of the main one? Will it work in this case? If yes, it seems an issue between Deco and the switches. Try to change the management IP address of the switches for a check.
Need to clarify that you need to firstly set up the three units in the same network via the Deco app before you use the Ethernet Backhaul features.
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Re:How to set up Ethernet Backhaul with Deco M5
2017-07-20 05:24:31 - last edited 2019-10-09 03:27:45

TP-Link Deco wrote

Nope, once the Deco units are wired together, they will communicate with each other directly via the wired connection bypassing Wi-Fi.You can have a check on your side.


Dear TP, I did check and it most certainly looks like the Deco units need to be in wireless range even when hard wired, if a unit is out of WiFi range it goes red and is reported in app as not connected. The thing is that this behavior is not consistent nor immediately. However, there surely is something fishy with the wired backhaul.
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Re:How to set up Ethernet Backhaul with Deco M5
2017-08-08 21:20:41 - last edited 2019-10-09 03:27:45

TP-Link Deco wrote


2. Please set up the three Deco units on the same network at first through the Deco app before you wired them together.


Hello! I do not quite follow this instruction. Do you mean that you should link them through WiFi first ("same network") and then connect them? Or do you just mean that it should be a separate switch for all Decos?
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Re:How to set up Ethernet Backhaul with Deco M5
2017-08-09 14:20:41 - last edited 2019-10-09 03:27:45
Hi, is it possible to have two of my deco devices connected with ethernet cables and the third connecting over Wifi? One of the connected ones would be the one connecting to the modem.
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Re:How to set up Ethernet Backhaul with Deco M5
2017-08-12 22:55:55 - last edited 2019-10-09 03:27:45

TP-Link Deco wrote

Nope, once the Deco units are wired together, they will communicate with each other directly via the wired connection bypassing Wi-Fi.

You can have a check on your side.


How do I check that the backhaul is over Ethernet?
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Re:How to set up Ethernet Backhaul with Deco M5
2017-08-13 09:40:27 - last edited 2019-10-09 03:27:45
Is there a solution to this issue yet? I have 4 decos main deck as router connected to internet modem, one wirelessly connected to the main deco and the other two connected via the Ethernet port. The ones connected via Ethernet is not working... ( they are not in the wireless range of the main unit.)I tried setting them up wirelessly first then moving them but it doesn't work. P.S all are updated to the latest firmware 1.1.1 build 20170614
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