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speed of wired/wireless LAN on Deco p9

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speed of wired/wireless LAN on Deco p9

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speed of wired/wireless LAN on Deco p9
speed of wired/wireless LAN on Deco p9
2022-04-27 20:50:40
Model: Deco P9  
Hardware Version:
Firmware Version: 1.1.3 Build 20201228 Rel 55057

On my LAN, I get 106-124 Mbits/sec wireless-to-wired and 250-260 Mbits/sec when wired over powerline. These speeds are below the ratings for the hardware. While I don't expect to get 100% of the advertised speed, any advice on how to improve speed?

 

I tested using iperf3 software and this setup

 

Laptop 1: Dell Latitude 5590 ethernet or wireless, acting as iperf3 client, less than 5 feet from secondary P9 Deco

Laptop 2: Lenovo IdeaPad 330S-15IKB ethernet only, acting as iperf3 server, wired to main P9 Deco

 

Best wireless speed test



[  4] local 192.168.68.140 port 62033 connected to 192.168.68.130 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec  14.5 MBytes   121 Mbits/sec
[  4]   1.00-2.00   sec  14.0 MBytes   118 Mbits/sec
[  4]   2.00-3.01   sec  15.1 MBytes   126 Mbits/sec
[  4]   3.01-4.00   sec  14.5 MBytes   123 Mbits/sec
[  4]   4.00-5.00   sec  14.8 MBytes   124 Mbits/sec
[  4]   5.00-6.01   sec  13.1 MBytes   109 Mbits/sec
[  4]   6.01-7.00   sec  14.5 MBytes   122 Mbits/sec
[  4]   7.00-8.00   sec  15.0 MBytes   126 Mbits/sec
[  4]   8.00-9.00   sec  16.6 MBytes   139 Mbits/sec
[  4]   9.00-10.00  sec  16.1 MBytes   135 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-10.00  sec   148 MBytes   124 Mbits/sec                  sender
[  4]   0.00-10.00  sec   148 MBytes   124 Mbits/sec                  receiver

 

 

Best wired speed test

[  4] local 192.168.68.150 port 61959 connected to 192.168.68.130 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec  29.0 MBytes   243 Mbits/sec
[  4]   1.00-2.00   sec  31.2 MBytes   263 Mbits/sec
[  4]   2.00-3.01   sec  32.2 MBytes   268 Mbits/sec
[  4]   3.01-4.00   sec  30.8 MBytes   259 Mbits/sec
[  4]   4.00-5.00   sec  30.8 MBytes   258 Mbits/sec
[  4]   5.00-6.00   sec  32.1 MBytes   270 Mbits/sec
[  4]   6.00-7.00   sec  30.6 MBytes   257 Mbits/sec
[  4]   7.00-8.00   sec  31.1 MBytes   260 Mbits/sec
[  4]   8.00-9.00   sec  29.0 MBytes   243 Mbits/sec
[  4]   9.00-10.00  sec  32.9 MBytes   276 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-10.00  sec   310 MBytes   260 Mbits/sec                  sender
[  4]   0.00-10.00  sec   310 MBytes   260 Mbits/sec                  receiver

 

Deco P9 rating

Wireless

AC1200
5 GHz: 867 Mbps (802.11ac)
2.4 GHz: 300 Mbps (802.11n)

 

Powerline

HomePlug AV2
1000 Mbps Powerline

 

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#1
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2 Reply
Re:speed of wired/wireless LAN on Deco p9
2022-04-29 02:06:33

  @Andrew_Z 

Nice to see you again.

As for the fast roaming security feedback, it has been forwarded to the senior engineers and could you mind also sending an email to security@tp-link.com so that you could have a direct conversation with the engineer directly.

Thank you in advance.

 

For the LAN speed issue, I see the iperf client and server are from different Deco P9 and for the powerline Deco, the powerline interference plays an important role.

So I wonder are you able to help me run the same iperf test but on the same Deco, either main or satellite units so that I can check whether the issue might be related to the transfer speed between Mesh nodes.

 

And as for the signal source on the satellite P9, Is it PLC/2.4GHZ+5GHZ?

Thank you very much.

Best regards.

 

 

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#2
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Re:speed of wired/wireless LAN on Deco p9
2022-07-13 13:09:25

  @David-TP 

 

I connected the two laptops (both in airplane mode) directly to my Actiontec C3000A DSL modem. This bypassed the TP-Link, so it's a control test to determine the maximum speed of other devices, in case they are the issue. The best speed of three tests was 935 Mbits/sec, so the laptops are fine.

 

The speed with both laptops connected to the same Deco satellite (called "living room") was 850Mbits/sec. While the Deco network switching was a bit slower than the DSL model, it was much faster as you suspected.

 

I moved both satellites ("loft" and "living room") to different outlets in the same room, and I plugged one laptop into each. The speed was mediocre again at 147Mbits/second, so the Deco backhaul is the suspect.

 

I plugged both satellites into the same outlet (with one laptop per satellite again). Four tests varied from 45.4 to 132 Mbits/sec. This was a direct connection to a normal outlet without a surge protector, UPS battery, smart electric plug, or anything.

 

In case the issue was one satellite, I connected both laptops to the other satellite ("loft"), and speed was 859 Mbits/second, so both satellites performed about the same. The backhaul still seems like the problem.

 

The satellites always show the signal source as the main ("office") followed by "2.4 GHz/5 GHz ~ PLC". (I suppose that means both Powerline and wifi, and for troubleshooting, it would be helpful to toggle them separately.)

 

Metronet is installing fiber optic in my neighborhood, and I will upgrade from 80Mbps DSL to 500Mbps fiber, so soon this performance issue will be less theoretical.

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