Wireless Access

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Frequent Contributor II
Posts: 149
Registered: ‎01-31-2013

Aruba AP Channel Assignment

Hi all,

In one of my Aruba installation I have the two APs showned in the picture in the first floor of the building. I see that both the APs are in the same RF Channel, while I expected them were assigned to two different channels because they are positioned next to each other.

Am I wrong???

Could someone explain me why they behave in this way?

 

Thanks,

Massimo

 

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Massimo Gallina
Telecommunications engineer - ACMP2013
MVP
Posts: 288
Registered: ‎08-27-2012

Re: Aruba AP Channel Assignment

Under AP Config -> Your AP Group -> RF Management -> expand 802.11a or 802.11g radio profile and look at then Adaptive Radio Management Profile. Make sure you have arm enabled and doing channel and power selection.
ACDX #419 | ACMP |
Frequent Contributor II
Posts: 149
Registered: ‎01-31-2013

Re: Aruba AP Channel Assignment

The APs are not under Controller, but they are IAP with VC. However I am sure that the ARM is enabled and that is doing channel and power selection, because there are other APs in the floor plan and they are working with different power and channel.

 

 

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Massimo Gallina
Telecommunications engineer - ACMP2013
MVP
Posts: 4,225
Registered: ‎07-20-2011

Re: Aruba AP Channel Assignment

ARM would look at different variables to determine the channel assignment :
- signal level (power level) that IAPs can hear each other
- SNR
- layer 2 MAC retries
Thank you

Victor Fabian
Lead Mobility Engineer @ Integration Partners
AMFX | ACMX | ACDX | ACCX | CWAP | CWDP | CWNA
MVP
Posts: 288
Registered: ‎08-27-2012

Re: Aruba AP Channel Assignment

Ultimately ARM will build a metric to determine the best channel, and for some reason the other channels must have some degrading factor causing it to re-use. You could always go scan the air with some sort of survey tool and see if you notice any background noise happening.
ACDX #419 | ACMP |
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