cisco 3500 series wireless controller

[yastop]

Hi,

I have a cisco 3500 series wireless controller that I want to upgrade, but I want a version that is less bug and works better with my AP's I would you recommend me

Cisco 3500 series currently running on next Software Version 8.5.131.0
Ap's : AIR-AP2802I-E-K9 total 40 pieces

[Kasun Bandara]

you can use Catalyst 9800-L WLC - https://www.cisco.com/c/en/us/products/wireless/catalyst-9800-series-wireless-controllers/index.html#~models

[yastop]

Thank you for your guidance

but i want to update the software and not the device

[yastop]

I want to update  the software and not the equipment

[balaji.bandi · Accepted solution]

8.10.151.0 - latest cisco suggested version.  (read the release notes, also understand the caveats - if ha also consider proceedure how to upgrade )

check the AP compatable matrix before you upgrade :

https://www.cisco.com/c/en/us/td/docs/wireless/compatibility/matrix/compatibility-matrix.html

[Leo Laohoo]

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@yastop wrote:
AIR-AP2802I-E-K9 total 40 pieces

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The answer is not about the firmware version of the WLC but the AP -- Replace the AP.  

There are several Cisco public-facing bugs in regards to 2800/3800/4800/1560/IW6200.  There is a design bug with the MARVAL radio chipset and the workaround/fix is to disable WMM. 

If WMM is not disabled, random traffic gets dropped but real-time traffic (like VoIP &/or video) gets dropped 100% of the time.