Trying to understand interference and channel utilization.

morabusa — Mon, 05 Jul 2021 19:34:14 GMT

I am noticing this in one of my APs where I am having a lot of issues about some clients connected with old devices in 2.4GHz, having a poor quality:

Interference Information
Interference Profile......................... PASSED
Channel 1.................................... -63 dBm @ 6 % busy
Channel 2.................................... -52 dBm @ 3 % busy
Channel 3.................................... -128 dBm @ 0 % busy
Channel 4.................................... -128 dBm @ 0 % busy
Channel 5.................................... -128 dBm @ 0 % busy
Channel 6.................................... -62 dBm @ 4 % busy
Channel 7.................................... -128 dBm @ 0 % busy
Channel 8.................................... -128 dBm @ 0 % busy
Channel 9.................................... -73 dBm @ 2 % busy
Channel 10................................... -128 dBm @ 0 % busy
Channel 11................................... -128 dBm @ 0 % busy
Channel 12................................... -128 dBm @ 0 % busy
Channel 13................................... -128 dBm @ 0 % busy
Channel 14................................... N/A
Load Information
Load Profile................................. PASSED
Receive Utilization.......................... 0 %
Transmit Utilization......................... 4 %
Channel Utilization.......................... 82 %
Attached Clients............................. 3 clients
Coverage Information

As you can see, the channel interference is at 4% bussy (AP is working in channel 6) but channel utilization is 82%, while TX and RX ispretty low. I am wondering about the reason of this, which could be the causes bechase there is a hich channel utilization while the AP is not seinding/receiving almost traffic, there is not interference detected and just 3 clients connected?

On the other hand, the interference by channel in the GUI looks pretty high in the same AP (as you can check in attached screen) so I am pretty confused about this values. Could you please help me to understand this values? Thanks!

Thanks.

Re: Trying to understand interference and channel utilization.

Rasika Nayanajith — Mon, 28 Sep 2020 20:22:57 GMT

It could be an interferer. In that case given AP tx/rx won't be higher value. However, the channel becomes unusable. If you have any spectrum analysis tool (eg sidekick, spectrum XT, channelizer) use that to track it.

HTH

Rasika

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topic Trying to understand interference and channel utilization. in Wireless

Trying to understand interference and channel utilization.

Re: Trying to understand interference and channel utilization.