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IAP-305, ARM increases power to max on all APs in 5GHz

For some reason ARM is assigning max power (27dbm) to all AP's. This is happening only in 5Ghz. After reboot, goes back to normal (12 dbm which is configured as minimum.) A day or 2 later they go up to max again.

This is happening in several deployment of IAP-305.

In one location, 5 old Cisco APs, providing perfect coverage at 1/2 power, were replaced by 10 IAPs (customer got 5 free, installed all 10). So it is not a problem of coverage needs.

Updated the firmware didn't help. 

Anyone experienced this or any suggestions?

Thanks

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Guru Elite

Re: IAP-305, ARM increases power to max on all APs in 5GHz

What version of Instant OS are you running?

What is your ARM max transmit power set for on the 5ghz band?

 

EDIT:

To be clear, if the AP does not detect any cochannel interference on the existing channel, it will increase the power to the ARM max transmit power setting on the 5ghz band in ARM.  You can constrain that by setting the ARM max transmit power as a ceiling.


*Answers and views expressed by me on this forum are my own and not necessarily the position of Aruba Networks or Hewlett Packard Enterprise.*
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New Contributor

Re: IAP-305, ARM increases power to max on all APs in 5GHz

Thanks for explanation. That makes sense.

Although, I expected the opposite, that ARM would set AP to minimum power needed for clients coverage. That is to provide the best throughput.

The ones I am investigation now are on 8.5.0.1 code. I have seen the same behavior on other codes.

 

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Guru Elite

Re: IAP-305, ARM increases power to max on all APs in 5GHz

ARM has always worked that way.  If you want it to cap the maximum, go ahead and cap it at like 18.


*Answers and views expressed by me on this forum are my own and not necessarily the position of Aruba Networks or Hewlett Packard Enterprise.*
ArubaOS 8.5 User Guide
InstantOS 8.5 User Guide
Airheads Knowledgebase
Airheads Video Knowledge Base
Remote Access Point Solution Guide
ArubaOS Consolidated Release Notes
ArubaOS 8 ViA VPN Solution Guide
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