Wireless Access

If the Controller show have the "High Noise Floor" under dashboard > Potential issues, do i need take any action? Or controller will handle it?

The controller will try to avoid the channel, but with only 3 available channels in the 2.4ghz range, it would be best to identify what could be causing the interference and remove it if possible so that your clients will perform better.  What is the noise reading?  If it is --85 to -100 that is not bad, at all...

 

I apologize in advance for the newbie question but I to am seeing high noise floor -77 and -72 on two of my AP's. What can/should I be looking for in the way of interference?

 

You should also look the amount of retries and check the AP neighbors to see if there's any other devices using overlapping channels

 

If you execute the following command it  should provide enough information :

 

show ap arm rf- summary ap-name <ap-name>

show ap arm neighbors ap-name <ap-name>

 

 

I'll give it a try. Thanks.

I have noticed that one of the AP's has neighbors with overlapping channels. I thought the controller determines the best channel to use for each AP. I suppose I am able to hardcode the channel for a particular AP...how is that done? Should I muck with that? We are using 105's.

In 2.4GHz you'll be concerned with cordless phones, Bluetooth devices, microwaves, and other access points. Is that where you're seeing?

You can enable spectrum monitoring on those APs if you'd like try to discover the sources of interference.

yes primarily in the 2.4 range. How do I turn on Spectrum monitoring exactly?

In your radio profiles you can change the mode of your APs to one of the following: am-mode, ap-mode, spectrum-mode (hybrid mode).  am-mode = air monitor, doesn't serve clients.  ap-mode = standard ap.  spectrum-mode = spectrum monitoring.  If you select ap-mode, you there will be a check box to enable Spectrum Monitoring.  The AP will operate in hybrid mode, serving clients and performing spectrum monitoring simultaneously.

 

CLI example:

 

rf dot11a-radio-profile "dot11a_radio_profile"

mode ap-mode
spectrum-monitoring

 

Chapter 34 of the Aruba OS User Guide talks about Spectrum Analysis.

Awesome. Thanks

leave them alone.