how to disable 5ghz radio in Cisco 8.10.183.0 wireless controller

[rishisemwal]

Hello,

How to disable 5ghz radio in Cisco 8.10.183.0 wireless controller (5520). I have observed that somethime network is droping and there are interference in the mesh network.

Thanks

Rishi

[Flavio Miranda]

Hi

 You can disable 5.0ghz by going to the WIRELESS tab, on the left hand side you go to Network

Now, you can also disable the 5 Ghz radio in one AP. On this case, you need to enter on the AP you want to disable it. The AP needs to be in Custom mode in order you to be allowed to shutdown the radio.

And lastly you can remove the 5.0 Ghz from the WLAN and only propagate in 2.4Ghz

[Rich R]

Assuming this post was not a joke (?) - @rishisemwal do you realise how unwise it would be to disable the 5GHz band?

First off - congestion is much worse on the 2.4GHz channels than on 5GHz (and there are only the 3 non-overlapping channels to use).
Second - it's quite common to use 5GHz for the mesh backhaul so removing that means you'll be forced to use 2.4GHZ for backhaul and serving clients.

Rather than turning the 5GHz band off (which is very likely to make your service worse), consider:
- identifying and removing the source of interference
- adjusting your channel allocations around potential interference sources
- site survey to ensure you actually have adequate 5GHz coverage

And update to 8.10.185.0 for a number of extra bug fixes.  Refer to TAC recommended (below) for any future releases.

[Gaurav Kansal]

Dear Rishisemwal,

It is advised you to please rectify your interference problem by manual selection of channel on particular access points and if you wish to do disable 5 GHz band then do it on some access points not globally on WLC.
GoodLuck