https://community.ruckuswireless.com/t5/ZoneDirector/Disable-80MHz-Channelization-Zonedirector/m-p/10946#M2279 Our wireless environment is very dense in a large office building with floors below and above us. I am currently using the "auto" channelization setting for the 5GHz radio, but I have observed our R710 AP's using 80MHz channels for most clients.&nbsp; I would like to limit the 5GHz radio to 40MHz channels, with the ability to step down to 20MHz channels for clients that don't support 40MHz.&nbsp; This works with the "Auto" setting, but if I set the channelization to 40MHz manually, will it still step down to 20MHz for clients that need it? Sun, 17 Dec 2017 18:36:57 GMT daniel_kuchensk 2017-12-17T18:36:57Z https://community.ruckuswireless.com/t5/ZoneDirector/Disable-80MHz-Channelization-Zonedirector/m-p/10946#M2279 Our wireless environment is very dense in a large office building with floors below and above us. I am currently using the "auto" channelization setting for the 5GHz radio, but I have observed our R710 AP's using 80MHz channels for most clients.&nbsp; I would like to limit the 5GHz radio to 40MHz channels, with the ability to step down to 20MHz channels for clients that don't support 40MHz.&nbsp; This works with the "Auto" setting, but if I set the channelization to 40MHz manually, will it still step down to 20MHz for clients that need it? Sun, 17 Dec 2017 18:36:57 GMT https://community.ruckuswireless.com/t5/ZoneDirector/Disable-80MHz-Channelization-Zonedirector/m-p/10946#M2279 daniel_kuchensk 2017-12-17T18:36:57Z https://community.ruckuswireless.com/t5/ZoneDirector/Disable-80MHz-Channelization-Zonedirector/m-p/10947#M2280 From what I can see, it's not possible to set anywhere else, but on the AP Zones or the AP's themself. Weather the channelisation is a Max, or a 'only'.. well, maybe some Ruckus rep can say? &nbsp; Mon, 18 Dec 2017 10:44:02 GMT https://community.ruckuswireless.com/t5/ZoneDirector/Disable-80MHz-Channelization-Zonedirector/m-p/10947#M2280 jakob_peterh_ns 2017-12-18T10:44:02Z https://community.ruckuswireless.com/t5/ZoneDirector/Disable-80MHz-Channelization-Zonedirector/m-p/10948#M2281 The answer is Yes, if left at 80mhz default, you will step down for 40mhz or 20hmz clients.<BR />If set originally to 40mhz, you will also support 20mhz channelization only clients. Mon, 18 Dec 2017 17:57:46 GMT https://community.ruckuswireless.com/t5/ZoneDirector/Disable-80MHz-Channelization-Zonedirector/m-p/10948#M2281 michael_brado 2017-12-18T17:57:46Z