I recently upgrade new switch called ESW540-24P gigabit switch from old Catalyst Express 500 so I wanted to switch the Width Channel from 20 MHz to 40 MHz on autonomous IOS, however, 5 GHz band allow me to use 40 MHz in order to pull full 300 Mbps but I am having issue with 2.4 GHz, when I choice from Width Channel, there is ONLY 20 MHz option. There was no 40 MHz like earlier IOS on either IE or Chrome. I am on 153-3.JAB so is this IOS affected to autonomous IOS to everyone if having problem with Width Channel?
Any tip I can enable the 40 MHz in 2.4 GHz?
PS. my internet speed now 100/10 (130/12).