That was the old way of doing things 😉 Usually from the 2504 forward they always used LAG mode since you didn't have to bother with load balancing your interfaces manually. More recent Catalyst controllers usually come with the option to do port-channels on regular ports or smaller port-channel on the high speed interfaces but they do support lacp. ... View more

@Ira rate limiting is the first step. secondly how big is your cafe as 300 guests is a lot and with only 5 AP's it might struggle. I would either reduce the number of guest clients you can have or add in more access points.   The other way you could do this is have the three MR33 solely for hosting the guest wifi and use the MR42's for your production network.  ... View more