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EAP660HD speed fall sometime consistently to less than 100 Mbs download/upload on 1Gb internet

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EAP660HD speed fall sometime consistently to less than 100 Mbs download/upload on 1Gb internet

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EAP660HD speed fall sometime consistently to less than 100 Mbs download/upload on 1Gb internet
EAP660HD speed fall sometime consistently to less than 100 Mbs download/upload on 1Gb internet
2021-08-28 18:13:29 - last edited 2021-09-07 05:36:28
Model: EAP660 HD  
Hardware Version: V1
Firmware Version: 1.0.5 Build 20201120 Rel. 54290(5553)

Just bought an EAP660 HD access point and during my testing the speed was excellent 500+ download and 550+ upload on a gigabit At&t fiber first time,

but trying to find a good location disconnected and connected again and observed that some time the speed was just less than 100 Mbs download/upload. To get the higher speed back, I have to reboot the EAP660 AP and sometime it needs 2-3 reboots.

Set the AP in the evening, tested speed - 500+ Mbs, in the morning to find that the speed drop to less than 100 Mbs (tested multiple times on 2 different devices). Rebooted 2 times to get the highest speed back.

The speed measured using speedtest.net on my laptop with ax200 Wi-Fi card and iPhone 11 pro at about 6-7' from the AP. 

This problem is quite alarming to me if a new device has such unstable speed. Coming from Netgear R7000 AP running fresh tomato and the speed was quite stable ~ 200 Mbs without reboot for months.  

 

Does anybody found similar issues or just my device is a lemon and need to replace it?

 

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#1
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1 Accepted Solution
Re:EAP660HD speed fall sometime consistently to less than 100 Mbs download/upload on 1Gb internet -Solution
2021-09-02 05:41:24 - last edited 2021-09-07 05:36:28

@Ionut21 

 

Confirmed that problem is a cable, after connected the old cable the problem was back, my speed drop to < 100 Mbs and my switch show that the speed on the connected cable was 100M. 

 

So I have removed the rj45 connectors and crimped a new ones on the both ends of the cable (that should fix this issue if the connectors are the problem) and connected back the EAP660HD. If the speed will drop, that means the cable itself may be damaged somewhere and will need to wire a new cable.     

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Re:EAP660HD speed fall sometime consistently to less than 100 Mbs download/upload on 1Gb internet
2021-08-29 13:47:52

@Ionut21 

 

Hey

 

You would need to give us more information before we could help you, things like the config you have applied. .. router etc.

 

My first idea is that its beamforming??  have you this enabled?   if so sometimes you may be connected to the 2.4ghz and not moved to the 5ghz.

 

If you can provide details on the connection type, frequency etc that would help :)

 

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Re:EAP660HD speed fall sometime consistently to less than 100 Mbs download/upload on 1Gb internet
2021-08-29 21:48:25 - last edited 2021-08-29 21:53:43

@Philbert 

Thanks for response.

 

My first testing was with default settings for both 2.4Ghz/5 Ghz, besides:

Security Mode: WPA-Personal

Version: WPA2/WPA3-Personal,

Wireless password: created a password

Group key update period: 3600

channel: Auto

Tx. Power: 18 (Medium) 

 

No other settings changed. The testing was done on 5Ghz only. 

Original testing was done without VLANs and found exactly same behavior (AP speed was falling to < 100 Mbs in ~ 12 hrs, or after reboot was already showing the low speed right away).

 

Later I setup VLANs for 3 SSID on 5Ghz and 1 on 2.4 Ghz and connected by Ethernet cable to tp-link TL-SG116E managed switch (no POE, 1 Gb) and is using the original power adapter. The managed switch is connected by Ethernet cable to pfsense computer. 

Same degradation to < 100 Mbs in ~ 12-16 hr later.  

 

Also tested using iperf from Ubuntu desktop as server to Ubuntu laptop and found similar degradation in speed:

[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.1 sec   115 MBytes  95.9 Mbits/sec

 

After reboot the EAP660 HD the iperf speed is :

[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.0 sec   946 MBytes   792 Mbits/sec
Tested through https://www.speedtest.net and the speed was 558/604 Mbs.

 

Verified the wifi networks using the <nmcli d wifi> command and there is an overlap in channels on 2.4 Ghz (using channel 1) and no overlap on 5Ghz (using channel 48).

 

The quality of the wifi signal at ~10 ft verified using  <watch -n 1 cat /proc/net/wireless> command it's about -49

Inter-| sta-|   Quality        |   Discarded packets               | Missed | WE
face      | tus  | link level noise |  nwid  crypt   frag  retry   misc | beacon | 22
wlp3s0: 0000   61.  -49.  -256        0      0      0      0    108        0

 

 

Let me know what other info is needed. 

 

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Re:EAP660HD speed fall sometime consistently to less than 100 Mbs download/upload on 1Gb internet
2021-08-30 03:20:08

@Ionut21 

 

To exclude the cables in the wall, built a new 40' cat 6 cable and connected the EAP660 HD directly to TL-SG116E switch.  Will test in this configuration to see if it's reproducible

 

 

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Re:EAP660HD speed fall sometime consistently to less than 100 Mbs download/upload on 1Gb internet
2021-09-01 05:16:43

@Ionut21 

After 2 days the connection is pretty stable (no drops in speed detected after connected with a new cat6 cable). 

 

Any sugestion how to detect a bad cable that has issues with providing a stable high speed connection?

I have an Ethernet Cable Tester (https://www.amazon.com/Zoostliss-Network-Cable-Tester-Networking/dp/B06XZYXN63/ref=sr_1_5?dchild=1&keywords=ethernet+cable+tester+rj45+speed&qid=1630472744&sr=8-5) and I checked the in wall cable  today and it show all 8 wires are OK but not sure if there is any way to test the speed quality.

 

I think now that any switch will show the connection speed as 100 or 1000 Mbs and will need to check next time, but in my case the connection was OK at the beginning most of the times and degraded in 10-14 hrs to < 100 Mbs and that pointed me to think that is the EAP660 HD fault. 

 

Decided to reconnect back the old cable that is going inside a wall to check if the switch will show 100M speed connection when the speed will drop on the AP and that should prove that is not the AP, but cable fault.

 

 

 

  

  

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Re:EAP660HD speed fall sometime consistently to less than 100 Mbs download/upload on 1Gb internet -Solution
2021-09-02 05:41:24 - last edited 2021-09-07 05:36:28

@Ionut21 

 

Confirmed that problem is a cable, after connected the old cable the problem was back, my speed drop to < 100 Mbs and my switch show that the speed on the connected cable was 100M. 

 

So I have removed the rj45 connectors and crimped a new ones on the both ends of the cable (that should fix this issue if the connectors are the problem) and connected back the EAP660HD. If the speed will drop, that means the cable itself may be damaged somewhere and will need to wire a new cable.     

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