Configure Aggressive Load Balancing / WLC

Wireless clients can load-balance across APs. To enable this feature you will have to configure Aggressive Load Balancing.

During the association phase, aggressive load balancing is working. If enabled and the conditions to load-balance are met, the association response frames are sent to the client which includes the status code 17.
This code indicated that the AP is too busy to accept more associations.

When using a 7921 don’t user aggressive load balancing otherwise initial roam attemt may fail.

To verify if Aggressive Load Balancing is enabled :
show load-balancing

Aggressive Load Balancing…………………… Disabled
Aggressive Load Balancing Window…………….. 5 clients

To enable Aggressive Load Balancing :
config load-balancing status enable
config load-balancing window 10

show load-balancing

Aggressive Load Balancing…………………… Enabled
Aggressive Load Balancing Window…………….. 10 clients