04-08-2019 07:58 AM - edited 07-05-2021 10:13 AM
We have a WLC 5520 running version 8.5 and 3802i radios. We can't afford any Prime management, I only have the WLC web GUI to manage it..
I want to make sure that there is always free channel space available for new clients. I do not care if AC MIMO is used at all, if using it will result in reduced client connectivity in a dense device environment.
It appears that by default the controller will try to run client connections as fast as possible wherever it can. I have at times seen up to an 800 megabit client connection, established to a single device that doesn't actually have a need for more than about 10 megabit Internet connectivity.
It is unclear to me if it will try to continuously maintain this ultra-fast MIMO connection to a single client, even if it means that other clients just coming into the the airspace are denied access because all channels are already in use.
We kept having connectivity problems until I went into "802.11a > RRM > Dynamic Channel Assignment (DCA)" and changed the channel width from "Best" to "20 mhz". I no longer see the 800+ megabit connections, but people have stopped complaining their device can't connect.
Should I be changing the "802.11n/ac (5 GHz) Throughput" and force the disabling SS2 "0-9" / "0-8" and SS3 "0-9" / "0-8" to turn off MIMO and assure maximum client channel availability?
I have read that disabling the higher single channel connect speeds is actually worse for a network because faster speeds need less time to send, and so can pass through interference better.
04-08-2019 11:49 PM
Just set the channel width to 20- or 40 Mhz will do fine.
04-09-2019 02:40 AM
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