Unable to adjust channel width?

[CiscoMesl]

Hi

We have a 2504 controller which has both 802.11n and ac enabled but the channel width seems to be set to 20Mhz by default.

I tried to change it under the Wireless > 802.11a/n/ac > RRM > DCA

"Network must be disable to adjust channel width"

Which network? 

All the SSID's must be disabled to change this?

Presumably 802.11n and ac are not doing much unless the channel width is set to more than 20mhz?

Thanks

[Scott Fella · Accepted solution]

You need to disable the 5ghz network in order to make that change.  After you make the change, then you can re-enable the 5ghz radio.

-Scott

[CiscoMesl]

Ahh makes sense now.

Should I be looking to make the 802.11a/n/ac band have 40mhz channels and leave the 802.11b/g/n one on 20mhz?

Thanks

[Scott Fella]

The 2.4ghz is only allowed for 20mhz.  The 5ghz you can configure 20/40/80.  Now you can go with 40mhz as long as you don't have a very dense deployment.... you must look at channel overlap.

-Scott

[CiscoMesl]

Brill, thanks