Dont Trust Your WLAN Controller

 Im not against automation but just like everything else, it sometimes needs to be double checked. Heres a couple of screenshots about questionable automatically generated channel plans from WLAN controllers. One is from my work and another is my own setup. 

This first one I can admit that it is probably trying its best. With only 3 non overlapping channels in the 2.4GHz band maybe it selected them to avoid over utilized channels. I cant do any in-depth analysis since the tools necessary are not allowed on my work laptop. However, the power levels for both radios on Channel 1 are very close to each other that I suspect a protocol analyzer would reveal issues. 

 



This second one was after I reinstalled my Unifi controller but forgot to go through and verify everything was working as I wanted. Needless to say I wasnt only unhappy but also a little annoyed they would even allow that in their algorithm. 


 

Nothing technical in this post. Just wanted to remind everyone that even after spending thousands on gear (cough Cisco) a post deployment validation survey is always a good idea. 

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