Wireless Backhaul for M5

Wireless Backhaul for M5
Wireless Backhaul for M5
2020-07-11 10:17:43 - last edited 2020-07-14 03:06:52
Model: Deco M5
Hardware Version: V3
Firmware Version:

I have 4 Deco M5 running latest Firmwares. 

I would like to know how the wireless backhaul of M5 works... I have a 100Mbps Fiber connection and I usually get 105 Mbps on the main deco. The slave decos show decent connection signal to the main deco but the throughput is around 85 to 90 Mbps only. The decos are as placed follows:

 

Hallway (Main Deco) 

Living room (signal source : main deco) 

RC Room (signal source : main deco) 

Master bedroom (signal source : main deco) 

It's like a star topology. 

 

First question...

Is that normal? 

The distance between my decos is not more than 15 ft each... Infact the master bedroom one is 7 ft away only. The only issue is all decos do not have Line of sight to the main deco. Only the living room one can see the hallway deco directly and it performs good. 

 

Second question...

If I upgrade to M9 plus, would I really see an improvement in the speed through slave decos? 

 

Third question.. 

If I disable the 5 ghz band, can it be totally dedicated to the backhaul? I understand that decos cannot be configured by the end user to choose the backhaul frequency as yet... But would it be available in the future? 

 

Fourth question... 

If I disable the 5Ghz band from main network and guest network, would deco automatically choose 5ghz as backhaul bandwidth? 

 

Thanks. 

 

 

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1 Accepted Solution
Re:Wireless Backhaul for M5-Solution
2020-07-13 13:05:49 - last edited 2020-07-14 03:06:52

@Saurabh_S 

 

There is no correct distance between the decos.
What you should always measure is the SNR (Signal / Noise ratio).
For your network to function in the best way, 24db is the minimum SNR between decos, above 30db is ideal.

See the screen I sent you from my networks, I always have over 40db SNR between decos. And 100% coverage of the house. The big question is don't look for 100mpbs full on customers because there won't always be. Sometimes 70/60 with continuous flow is perfectly normal.

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9 Replies
Re:Wireless Backhaul for M5
2020-07-11 11:54:23

I think I'd like to know the answer to this as well :-)

Virgin Media 200Mb+ SuperHub (Modem Mode) -> ASUS Router (WiFi Off) -> Deco M5 (Access Point Only).
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Re:Wireless Backhaul for M5
2020-07-11 12:39:54

@Saurabh_S "The slave decos show decent connection signal to the main deco but the throughput is around 85 to 90 Mbps only", it's normal. 

You have 2 wifi connections between main deco. Your computer to slave deco, slave deco to main deco and don't lost 15% of your speed. Don't worry about this. 

Wanna really test slave speed? put PC/Notebook via Ethernet and test. 

i have 400mbps fiber on main deco, god 400 into main deco and got 300 in each slave point.

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Re:Wireless Backhaul for M5
2020-07-11 13:30:30 - last edited 2020-07-11 13:31:26

@leogz OK understand.... 

But what about the other queries? Would deco use 5Ghz as dedicated backhaul frequency if I free it from the main and guest network? Would it increase the speeds on slaves? 

 

Would I see any difference if I upgraded to M9 plus? 

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Re:Wireless Backhaul for M5
2020-07-11 15:59:32 - last edited 2020-07-11 16:02:16

Deco M5 use both 2.4 and 5 to backhaul. No, M9 you don't gain much. M5 is a most stable product for Deco line M.

Backhaul use hidden network between decos.

Look my 5 spot's Deco @ home

 

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Re:Wireless Backhaul for M5
2020-07-11 19:38:17

@leogz thanks for your time. Which software is this to scan the network? 

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Re:Wireless Backhaul for M5
2020-07-11 19:39:24

@Saurabh_S Wifi Explorer

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Re:Wireless Backhaul for M5
2020-07-13 12:33:21

@leogz 

Thanks for the tip. 

 

I did check the way you suggested and happy to report that all of my decos have great wireless backhaul. I  was able to get more than 100 Mbps on all decos through ethernet port. I am on the 100 Mbps download and upload plan. 

 

However, there is one more doubt that I wish to clear. 

 

My living room deco that is connected to hallway (main deco) has a good backhaul but when clients connect wirelessly the download suffers a bit. I am assuming that there is a string overlap of wifi signals from hallway and living room deco. When the living room deco is powered Off, I still get good signal from the hallway deco and speeds of more than 100 but when both the decos are on, and my phone connected to living room deco, the speed goes down to 80 to 85.

 

I am somehow suspecting that the distance between the 2 decos is not ideal and hence the signal from both decos are interfering with each other. Ideally it shouldn't be like that. I may remove the living room deco if this is correct. Please help me if my understanding is correct.

 

Is there suppose to be an ideal distance to be maintained between 2 units so that they don't kill each other's signal? 

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Re:Wireless Backhaul for M5-Solution
2020-07-13 13:05:49 - last edited 2020-07-14 03:06:52

@Saurabh_S 

 

There is no correct distance between the decos.
What you should always measure is the SNR (Signal / Noise ratio).
For your network to function in the best way, 24db is the minimum SNR between decos, above 30db is ideal.

See the screen I sent you from my networks, I always have over 40db SNR between decos. And 100% coverage of the house. The big question is don't look for 100mpbs full on customers because there won't always be. Sometimes 70/60 with continuous flow is perfectly normal.

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Re:Wireless Backhaul for M5
2020-08-11 18:23:57

@leogz 

 

Eventually I took the plunge and upgraded to M9 Plus. 

 

I can say that there is a lot of difference that I see in the speed. Maybe bacause of the dedicated wireless backhaul. My speeds are more than 240 Mbps download and upload both even on the slave decos M9. My ISP is delibering 250 Mbps on fibre optic. So it's damn close. M5 Gateway router was delivering the same speed but the slaves never went beyond 130. With M9 plus running the latest 1.4.2 firmware deliver 240 all a cross the 4 nodes. Could be because this is a AC2200 system compared to the M5 that was only AC1300. 

 

From my experience, what I have learnt is that an AC1300 system is good upto 100Mbps internet speeds but if you are on a 200 Mbps plan an AC2200 will do a better job. And If you are on anything above 200Mbps plan, an Ac3000 should be ideal. 

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