MSM7xx Controllers Configuration Guide v6.4.0

The load balancing algorithm runs individually on each AP. It is activated only when more than
fifteen clients are associated with an AP. For each radio, the AP determines which load balancing
action to take:
• Operate normally: The radio client load is comparable to its neighbors.
• Discourage new clients: The radio is overloaded compared to its neighbors. (Only done if the
number of clients on a radio differs from the average on all radios by more than five.)
• Encourage new clients: The radio is under-loaded compared to its neighbors.
The following strategies are used to discourage new clients:
• The radio gradually decreases the transmit power for beacon and probe response frames by
a total of 6 dB over a 30 second period. The transmit power for all other frame types is left
unchanged.
• The radio delays probe response frames to encourage clients to chose another radio that
responds faster.
• The radio rejects the first association request from a new client with a -17 error code:
Association denied because the radio is unable to handle additional associated STAs.
Schedule automatic analysis
Use these options to set up RRM to periodically perform an analysis and apply the results to the
network automatically if desired. If the automatic option is not enabled, the administrator will have
to apply the new baseline manually.
Running an analysis manually
Use the Analysis box to manually run an RRM analysis and also to view the results of the last
analysis that was run, or to view information about an analysis that is in progress.
The following options are available for manual analysis if Auto-channel is enabled:
• Analyze now: Run the analysis, but do not apply it to the network. This will create two baselines
RRM_BEFORE and RRM_AFTER in the RRM available baselines box.
• Apply now: Apply the results of the last analysis to the network.
• Analyze and Apply: Run the analysis and automatically apply the results to the network.
When an analysis is in progress, the fields under Description will be updated to show progress.
Current network status
Shows the status of the network since the last RRM analysis (baseline) was applied. If nothing has
changed in the wireless environment, all fields will have a value of 0 except for the Total radios
192 Radio Resource Management