WLC limit per RF Group

[pblume]

Per Cisco documentation, it states that RRM supports a maximum of 20 controllers and 1000 APs per RF Group.

If I configure more than 20 WLCs with the same RF Group name, will the WLCs automatically divide themselves into 2 separate RF Groups or will this limit cause the 21st WLC to just not join the existing RF Group?

Thanks

[irisrios · Accepted solution]

It will not allow 21st controller from joining the existing RF group. You have to manually put them in seperate RF group.

[Dmitry Halavin]

The controllers will automatically split into two RF groups (or more if they see fit, obviously, if APs do not hear each other).

[dennischolmes]

Bear in mind that RRM tasks the controllers quite a bit from the memory and processor side. Having large numbers of multiple groups could cause reporting issues to WCS.