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Posts: 1
Registered: ‎05-19-2012

Can excessive rf interference cause AP to reboot%3F

I have a dorm 12 stories tall with approximately 6 AP 125's per floor. Using Xirrus tool on a PC and wifi analyzer on a android device we see signal, mostly on 2.4 but also on 5 drop out. Students are complaining about not being able to maintain connectivity mostly on their phones. We didn't have a problem last year but have see the addition of 1000 devices joining the network when compared to last spring semester. In addition we also see an increase in HP and other printers, wireless connected TV's and the usual smattering of AP's. 

 

This particular building was update to 125's last year and had no issues. We are making a concerted effort to remove AP's, getting users to turn off wireless on their printers and moving some AP's to get stronger coverage in the bedrooms. Currently the AP's site in the living room of a 3 bedroom suite. 

 

Can rf cause an AP to reboot or cause the AP transmission to drop to zero?

 

Thanks for any information you can provide.

 

Mark

MVP
Posts: 1,408
Registered: ‎05-28-2008

Re: Can excessive rf interference cause AP to reboot%3F

Hi,

What ArubaOS version are u rinning on the controller?

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Guru Elite
Posts: 20,994
Registered: ‎03-29-2007

Re: Can excessive rf interference cause AP to reboot%3F


Fordham1841 wrote:

I have a dorm 12 stories tall with approximately 6 AP 125's per floor. Using Xirrus tool on a PC and wifi analyzer on a android device we see signal, mostly on 2.4 but also on 5 drop out. Students are complaining about not being able to maintain connectivity mostly on their phones. We didn't have a problem last year but have see the addition of 1000 devices joining the network when compared to last spring semester. In addition we also see an increase in HP and other printers, wireless connected TV's and the usual smattering of AP's. 

 

This particular building was update to 125's last year and had no issues. We are making a concerted effort to remove AP's, getting users to turn off wireless on their printers and moving some AP's to get stronger coverage in the bedrooms. Currently the AP's site in the living room of a 3 bedroom suite. 

 

Can rf cause an AP to reboot or cause the AP transmission to drop to zero?

 

Thanks for any information you can provide.

 

Mark


Unless there is a bug, excessive RF interference will not cause it to reboot, but it will cause radio resets.  They do not take very long to reset, but even if they did NOT reset, exessive interference could make it much more difficult to pass traffic.  To determine what is the cause if your issue, you should (1) Look at the Controller's RF dashboard to see interference, channel busy and utilization (2) Possibly get a spectrum analyzer to see if there is anything foreign stopping your transmission.

 

You could also go through some of the ideas in the post here:  http://community.arubanetworks.com/t5/Technology-Blog/Removing-the-Bottleneck-in-Wireless/ba-p/77978  to determine if you have things that can be remedied first..

 

If you are still having problems, you should open a TAC case so that they can look over your config in details and come up with some reasons to your issue.

 



Colin Joseph
Aruba Customer Engineering

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