The sta-load-balance dynamic gap-threshold command sets the load difference threshold for dynamic load balancing based on the number of users.
The undo sta-load-balance dynamic gap-threshold command restores the default load difference threshold for dynamic load balancing based on the number of users.
By default, the load difference threshold of a dynamic load balancing group is 20%.
sta-load-balance dynamic gap-threshold gap-threshold
undo sta-load-balance dynamic gap-threshold
Parameter |
Description |
Value |
|---|---|---|
| gap-threshold gap-threshold | Specifies the load difference threshold for dynamic load balancing based on the number of users. |
The value is an integer that ranges from 1 to 100, in percentage. |
When a user requests to connect to an AP, the AP will count the total number of access users on all radios. If the total number of access users does not exceed the start threshold, the AP does not implement dynamic load balancing. The AP implements dynamic load balancing only when the total number of access users on all radios exceeds the start threshold.
In dynamic load balancing mode, an AC uses a load balancing algorithm to determine whether to allow a user to associate with a radio. The load balancing algorithm is as follows:
When implementing dynamic load balancing, the AC calculates the load percentage of each radio in a load balancing group using the formula: Load percentage of a radio = (Number of associated users on the radio/Maximum number of users allowed on the radio) x 100%. The AC compares load percentages of all radios in the load balancing group and obtains the smallest load percentage value. When a user requests to associate with an AP radio, the AC calculates the difference between the radio's load percentage and the smallest load percentage value and compares the load difference with the threshold. If the difference is smaller than the threshold, the AC allows the user to associate with the radio. If not, the AC rejects the association request of the user. If the user continues sending association requests to this AP, the AC allows the user to associate with the AP when the number of consecutive association attempts of the user exceeds the maximum number of rejection times.