R730 channel utilization?

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I recently purchased a R730 to integrate into my SOHO setting, replacing one of my three existing R720s which have performed flawlessly. 
I've been seeing really high channel utilization figures so am trying to understand root cause. Ive disconnected all wifi devices other than my MacBook to run some diagnostics software and Ruckus vSZ-E and still see 20% utilization (sometimes peaking at closer to 50%). 
I have 3 SSIDs on 5Ghz and 4 on 2.4Ghz (IoT subnet)
Im curious if this is expected behavior with the AX chipset or a config error by a somewhat new to Ruckus user. 



Controller: 5.1.1.0.598
Control plane: 5.1.1.0.405
AP firmware: 5.1.1.0.624


thanks in advance
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RF0V1K

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Posted 2 weeks ago

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John D, AlphaDog

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Sorry I don’t have an answer here but I am curious about your home setup — I use Ruckus APs for my home office setup too and have thought about moving over to vSZ as well. The last time I looked into it, the requirements were kind of steep, something like 12GB RAM not to mention licensing costs.

Are you using a vSZ instance shared with something else or a dedicated one at home?
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RF0V1K

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Thanks John. I have another R730 due to arrive today so I'll verify with that one too.
I run a vSZ virtual machine runs under VMware with minimum requirements (4 cores, 13GB RAM, 100GB 'thin' provisioned disk etc) at home. It's been largely trouble free since installation other than one user invoked error which Ruckus support untangled for me. Ruckus provide a VMware image which makes experimentation trivial. The licensing costs associated with the Ruckus platform were acceptable to when purchasing a 5yr license and in respect to the value offered due to increased performance, reliability and functioning guest portal, fast roaming and other bits and pieces compared to my previous setup. 
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John D, AlphaDog

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Thank you for the info!

I know what I’m gonna do when I go home tonight :D
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RF0V1K

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Update. I went back to the three r720s which I knew worked and started debugging. I found the source of noise using my WiSpy hardware! I discovered the wife had recently plugged in some wireless mosquito repellers she bought of eBay which were flooding the wireless frequency range. 2.4Ghz scan looks much cleaner now. I do however still see 20% utilization on the R730 with few clients. I'm still debugging. 






(Edited)
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Ali

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I saw this on my 730 on 5 GHz radio however my throughput was still excellent.
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John D, AlphaDog

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I just changed my R730 to vSZ-E and I’m seeing the same behavior. Also the packet error rate being reported is like 40-50% which doesn’t sound right either. Throughput is fantastic.
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RF0V1K

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Thanks for the feedback guys. Since resolving the wifi blocking mosquito devices the throughput looks more typical although the error rates are still reported as high although falling since originally reporting this problem. It looks like the values are averaged over some time / traffic hence the skewed results. I also connected my second R730 which demonstrates the same escalated values. 

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Ali

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That is interesting I was seeing high utilization on 80 MHz channel 100+.  I actually ended up changing that to 40 MHz.
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Abilash PR

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Hi RF0V1K,

Nice share, Good to know that these devices would interfere with WiFi.

Regards,
Abilash PR.