I was at a customer site and noticed odd channel selection by a Cisco WLC for a few of its attached Access Points. I would manually trigger the Access Point to try a select a different, a more ‘optimal’ channel configuration but noticed by the next day that again RRM choosing what I would consider improper channel selection.
Why..well i decided to track down the location of the Access Point with the ‘wrong’ channel … a few in the cafeteria and some in the kitchen. Hmm … what was common here.. why was RRM being silly…or was it??
Didn’t make any sense..until someone wise mentioned “microwaves around these APs.”And my response, of course..now i felt silly myself for not catching it myself.So I decide to go to each of the areas where there were microwaves, place a SE mode AAP and watch the RF before, during and after the microwave being turned on.
So RRM wasn’t being wonky after all.. Know your RF environment before you judge RRM 🙂
Don’t let microwaves dictate your channel selection.
But this can be controlled – see below
So the question is – if your client isn’t willing to swap out leaky microwaves. Is it better to not to take non-802.11 noise into the DCA calculations?
My experience is where the client usage is minimal then leaving the non-802.11-intefernce out of the calculation works out – even if there is voice over the Wi-Fi. Your APs don’t all hangout on channel 1.
Let me know your thoughts and or experience.