First blog post (and it’s long) so let’s just get down to brass tacks…
I recently had a minor panic attack when I was looking at all the fancy stats that show ap auto-rf 802.11a “ap name” gives you on a Cisco WLC. All 3 of my controllers were showing hundreds, if not thousands, of channel changes for a vast majority of the associated APs. My first thought was that there was something in my RF environment causing Dynamic Channel Assignment (DCA) to constantly be changing the channel plan. From what I could recall though, Cisco had designed DCA to keep cascading channel changes from rippling though the entire wireless environment. The numbers were indicating otherwise though.
A small sampling of random AP’s across sites large and small was turning up a large number of high channel change counts regardless of site. I decided that I wanted to see what my channel changes looked like for each AP. We have almost 500 AP’s so running the above command on each AP wasn’t the best use of time plus I was having to go into Cisco Prime to look up each AP’s physical location. So with the problem at hand I decided it was…
…PYTHON TIME!!
Continue reading “Getting DCA Channel Change counts with Python”