We have a customer running a IAP netwrok in a very congested / dense area of a shopping centre, They have 3 IAP's managed by Central.
Many of their critical devices have a single 2.4Ghz radio. ARM is changing channels very 2 / 3 hours.
What is considered a high 'Ch Busy perct @ beacon intvl '
The following is the output of one of their AP's
show ap debug radio-stats 1 | include beacon
Tx Time perct @ beacon intvl 11 11 11 11 11 11 11 11 11 12 12 12 12 12 12 12 12 12 16
Ch Busy perct @ beacon intvl 74 74 74 74 74 74 74 74 74 77 77 77 77 77 77 77 77 77 75
Rx Time perct @ beacon intvl 57 57 57 57 57 57 57 57 57 55 55 55 55 55 55 55 55 55 53
Just to add to the above I check the network while the shopping centre was closed and the channel utilisation was still very high @ about 50 to 60%.
This was from one of the AP's when the building was closed.
Ch Busy perct @ beacon intvl 53 53 53 53 53 53 53 53 53 53
I dropped the AP power from 12 to 9 on the 2.4Ghz radios, disable client aware for a while and ARM dropped the AP radio powers to 9dBM.
What else can we do to improve the 2.4Ghz network?