Weak Signal Probe Request Suppression does not work?

[andreas_brueck]

Hello everybody,

we have some trouble with sticky clients which does not roam to a better access point. Because of that i activated the option Weak Signal Probe Request Suppression for my 2,4 and 5 Ghz radio profiles.

After that i did a complete configuration update on all access points. Two days later i checked the connected clients for some access points and i found clients with really poor SNR values.

How is it possible? Is it correct that clients with a poor SNR still will be connected to an not optimal access point? Maybe i don't understand this option correctly.

We are using the on-premises Hivemanager NG (build version 19.5.1.7-NGVA ) and a lot of AP230 (HiveOS 10.0r5 build-228634 ).

Thank you in advance.

Regards,

Andreas Brück

[andreas_brueck]

Ok, thank you Brian. That is very useful to know. So i will still use the configuration as shown in the pictures.

[andreas_brueck]

Thanks, that is nice to know. Yes, we still have some clients with poor RSSI and SNR values. But i think its less than yesterday, i need to observe this the next days. The Maximum Transmit Power is set to 20 dBm for the 5 ghz band and 17 for the 2,4 ghz band. Are this values to high?

[bpowers]

Beacon frames by default come out at the lowest configured "Basic" rate. So having 12 and 24 configured as basic would have little impact on this. There is however a setting in the radio profile under High Density WLAN Settings called "Enable settings designed to optimize performance in a high-density WLAN" that then gives you a dropdown selection to change the data rate that the Management Frames are transmitted at. The settings are Low and High. This is basically changing it from the lowest configured Basic rate to the Highest configured Basic rate. The combination of the two could have some impact. But getting that high of a basic data rate could have other implications that outweigh the possibility of it forcing clients to roam.

[bpowers]

As a rule of thumb, most people say to not adjust any of the MCS rates. With your current settings, you're still seeing clients with weak RSSI? If so, what type of power settings are configured for your radio profiles? Is it perhaps, the output power of your APs far exceeds the output power of your devices? In this scenario, the client device may see the AP strong, but the AP cannot hear the client well. This could be causing the client devices to hang onto APs longer than necessary.

[andreas_brueck]

I have an additional question:

Is it necessary to set the data rate 24 Mbps to Basic instead of Optional ? So that 12 and 24 Mbps are both set to Basic for 802.11a/b/g or makes it no difference?