Wireless Network Manager Administration Guide

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Technical Documentation > Wireless Network Manager Administration Guide > Managing Policies > Policy Hierarchy > Select an AP Policy > RRM (Radio Resource Management)

RRM (Radio Resource Management)

The RRM page contains these sections:

  • Radio Resource Management
  • Dynamic Channel Selection
  • Client Load Balancing

The Global Dynamic Channel Selection (DCS) helps to choose the proper channel for the SonicWave devices. Based on the DCS algorithm, the system uses RRM to take action dynamically, directing the client device to the AP that can give it the best signal. Global DCS is not available on SonicWave appliances that do not have a scan radio, such as the SonicWave 224w.

Radio Resource Management

To configure the Radio Resource Management options

  1. Navigate to Policies > Policy Hierarchy.
  2. Select the AP Policy and click on the RRM.
  3. In the Radio Resource Management section, click the Enable Radio Resource Management - RRM slider to activate or deactivate RRM.
  4. In the Station Quality Threshold (1 - 50) field, enter the threshold value for the station quality. The default value is 20. Station Quality is the health index to track and assess the status of the wireless client connection varying between 1 and 50. The bigger index value means wireless station is connected with higher data rate and less packet drop. The wireless client is disconnected if station quality is below threshold being configured.
  5. In the Radio Quality Threshold (1 - 50) field, enter the threshold value for the radio quality. The default value is 20. Radio quality is the health index to track and assess the status of radio band utilization which varies between 1 and 50. The bigger index value means radio band utilization is lower with less packet drop. The radio TX power is lowered down if the radio quality is below threshold being configured.

Dynamic Channel Selection

Wireless Network Manager supports Global DCS with RRM in the cloud.

To activate Dynamic Channel Selection

  1. Navigate to Policies > Policy Hierarchy.
  2. Select the AP Policy and the RRM.
  3. In the Dynamic Channel Selection section, click the DCS Mode Global slider to activate or deactivate Dynamic Channel Selection.

To configure Dynamic Channel Selection

  1. Navigate to Policies > Policy Hierarchy > RRM.
  2. Locate the Dynamic Channel Selection section.
  3. From the 2.4GHz Radio DCS Scheme list, select the mode you want to use:
    • Safe Mode: This is a conservative mode that switches to a better channel, but only when no client devices are connected. This is the default setting.
    • Steady Mode: This is a moderate mode that checks periodically for a better channel in the background.
    • Swift Mode: This is a more aggressive mode that switches to better channel as soon as a high level of noise or interference is detected on the current channel.
  4. From the 5 GHz Radio DCS Scheme list, select the mode you want to use:
    • Safe Mode: This is a conservative mode that switches to a better channel, but only when no client devices are connected. This is the default setting.
    • Steady Mode: This is a moderate mode that checks periodically for a better channel in the background.
    • Swift Mode: This is a more aggressive mode that switches to better channel as soon as a high level of noise or interference is detected on the current channel.

Client Load Balancing

The Client Load Balancing feature balances the number of connected clients among different APs within the same L2 layer network, using calculations based on the RSSI between Clients and APs.

This feature uses information about the station load of each AP(all APs are under L2 and connected with each other), and makes wireless station probes to steer the client to the best available AP, based on the STA's good web surfing precondition. This helps to steering the client to the best available AP, improving the performance and reducing the loss and latency for mission-critical applications.

Enable the option Client Load Balancing if required, and click OK to save your selections.

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