Issue data rates QOS

[Hans]

We installed recently a few AP650's (802.11ax). We don't using the 802.11ax technologie at the moment as some important clients have problems connecting to a 802.11ax network. It is a high-density environment. The company keeps having problems with speed and connection drops. I did some packetcapture and see an airtime consumptiom of more then 100% on very regular times. I also see max data rates of 24Mbps wich make the airtime consumption even worse. Most of the data frames are QOS data frames of the 'best-effort' type. Is it correct to assume that the max 24Mbps data rates is an effect of the QOS kicks in due the airtime consumption? We configured load balancing of clients based on airtime consumption, however I believe the constant ups and downs of the airtime consumption makes it hard for the Aerohive manager to balance the clients between access points.

[samantha_lynn]

We look at a few different measures for interference. To start with, we'd look at the neighboring signals with the command "show acsp neighbor". For example, I ran this command on Icapps_AP5 and the majority of the output for this command is referencing channel 6, which is the channel you are using on this AP. There are quite a few values here that indicate the signal is too loud and will be causing packet damage on the channel you are using now.

The next outputs we generally check for interference (show int wifi0, show int wifi0 _count, show int wifi1, show int wifi1 _count) all use background scans that the APs are doing themselves to populate the information. These aren't concerned as much with the channel the AP is using so much as the integrity of the packet once it is sent or received by the AP you're looking at and the state of the air space we're trying to send our signal through. This means the data is still related specifically to what the AP is doing, not just information about other channels that you aren't using.

[Hans]

Hi Sam

Thx for the review.

We surveyd this environmet a lot, and we are using channels of UNII-3 at the moment because this are the only channels not used by other WiFi environments at the near neighbours (this site is situated in a big city). I do not understand the interference as there is no other WiFi network in the environment using the same channels. How is the interference calculated? Is it based on frames with a bad FCS (captured from the air no mather wich channel)? I feel the interference message at the Extreme portal is more as a false positive as we see it at all of our clients and I feel it is based on values not specifically for the used channel (who cares of interference on channels we are not using).

Can you provide me with some feedback so I understand where the values coming from?

[samantha_lynn]

Thank you for that access. I took a look and as far as I can tell you aren't using an QoS outside of the default settings. The main cause for dropped signals or slow wireless speeds is interference, and I do see some very significant interference on your APs. I'd recommend going through the steps in this guide to identify and troubleshoot Radio Frequency Interference on your network: https://thehivecommunity.aerohive.com/s/article/Radio-Frequency-Interference-NG

[Hans]

Hi Sam, you are added to the hive. The organization name is ICAPPS. Thx!