Specifications

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Cisco Wireless LAN Controller Configuration Guide
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Chapter 4 Configuring Controller Settings
Configuring Aggressive Load Balancing
• Hardware configuration (two radios use more memory than one).
• Enabled features (WDS functionality in particular).
The per-radio limits are as follows:
The per-radio limit is about 200 associations. One association will likely hit the per-AP limit first.
Unlike Cisco Unified Wireless Network, autonomous Cisco IOS supports per-SSID/per-AP association
limits. This limit is configured using the max-associations CLI, under dot11 SSID. The maximum
number is 255 associations (which is also the default number).
Using the GUI to Configure Aggressive Load Balancing
To configure aggressive load balancing using the controller GUI, follow these steps:
Step 1 Choose Wireless > Advanced > Load Balancing to open the Load Balancing page (see Figure 4-19).
Figure 4-19 Wireless > Advanced > Load Balancing Page
Step 2
In the Client Window Size text box, enter a value between 1 and 20. The window size becomes part of
the algorithm that determines whether an access point is too heavily loaded to accept more client
associations:
load-balancing window + client associations on AP with highest load = load-balancing threshold
In the group of access points accessible to a client device, each access point has a different number of
client associations. The access point with the lowest number of clients has the lightest load. The client
window size plus the number of clients on the access point with the lightest load forms the threshold.
Access points with more client associations than this threshold is considered busy, and clients can
associate only to access points with client counts lower than the threshold.
Step 3 In the Maximum Denial Count text box, enter a value between 0 and 10. The denial count sets the
maximum number of association denials during load balancing.