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Very slow WLAN using SD-RED20 + wifi module (802.11 AC 2x2 wifi module (for 125w / 135w rev3)

Hi!

I'm having problem using new RED20 device + WiFi module.

With ethernet speed is just fine, but when connected to wifi connection speed is horrible.

RED's operation mode is Standard/unified.

Tested with various devices. Laptop connects to REDs AP at 300Mbps.

Most of the time Ping is well over 100. At worst over 3000ms.

What could be done to fix this? Firewall we're using is XG 210 running SFOS 17.5.11 MR-11.

Patterns are up to date.

 

Here's some pics:  

 

This is the speed with laptop connected to RED's wifi: 

 

This is the result when connected with ethernet through RED:

This is the Wifi speed when same device connected to APX320 to clarify it's not the client device issue (Not connected to RED):



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Parents Reply
  • Corporate network is Bridge to Lan and Guest network is Separate Zone.

    APX320 was working just fine!! There was no probelm at all. The speed was similar to Ethernet and it was as fast as the internet connection allows.

    RED 20 + internal wlan produces about 8/10 (DL/UL) and APX320 close to 90/50.

     

    And also noticed that is not possible to use 2.4Ghz and 5Ghz at the same time with internal Wifi module. I tried using both for testing purposes. 2,4ghz speed is around 3/5Mbps and 5Ghz speeds are those 8/10Mbps.

    I also had another RED 20 + wifi module going to another customer. Took the wifi module from that and plugged in to this RED unit and the results are the same.

     

     

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