Users Guide

529 | Adaptive Radio Management Dell Networking W-Series ArubaOS 6.4.x| User Guide
Using the WebUI
The following procedure configures the Hard Limit parameter in Traffic management profile:
1. Navigate to the Configuration > Advanced Services > All Profiles page.
2. Under QOS > Traffic management on the Profiles pane, select the profile name.
3. Under the Advanced tab on the Profile Details pane, select the Proportional BW Allocation parameter
and follow the steps given in the Table 104.
4. Click Apply.
Using the CLI
You can configure the traffic management profile using the following command:
(host)(config) #wlan traffic-management-profile <profile>
Spectrum Load Balancing
The spectrum load balancing feature helps optimize network resources by balancing clients across channels,
regardless of whether the AP or the controller is responding to the wireless clients' probe requests. The
controller uses the ARM neighbor update messages that pass between APs and the controller to determine the
distribution of clients connected to each AP's immediate (one-hop) neighbors. This feature also takes into
account the number of APs visible to the clients in the RF neighborhood, and can factor the client’s perspective
on the network into its coverage calculations.
The controller compares whether an AP has more clients than its neighboring APs on other channels. If an AP’s
client load is at or over a predetermined threshold as compared to its immediate neighbors, or if a neighboring
Dell AP on another channel does not have any clients, load balancing will be enabled on that AP.
When an AP has the spectrum load balancing feature enabled, the AP will send an association response with
error code 17 to new clients trying to associate. If the client receiving the error code tries to associate to the AP
a second time, it will be admitted. If a client is rejected by two APs in a row, it will be admitted by any AP on its
third try. Note that the load balancing feature only affects the association of new clients; this feature does not
reject or attempt to balance clients that are already associated to the AP.
Spectrum load balancing is disabled by default, and can be enabled for 2.4G traffic through an 802.11g profile
or for 5G traffic through an 802.11a RF management profile. The spectrum load balancing feature also
requires that the 802.11a or 802.11g RF management profiles reference an ARM profile with ARM scanning
enabled.
The spectrum load balancing feature available in ArubaOS 3.4.x and later releases completely replaces the
AP load balancing feature available earlier versions of ArubaOS. When you upgrade from an older release to
ArubaOS 3.4.x or later, you must manually configure the spectrum load balancing settings, as you can lo longer use
the AP load balancing feature, and any previous AP load balancing settings will not be preserved.
For details on modifying 802.11a or 802.11g RF management profiles, refer to RF Management on page 593 .
Reusing Channels to Control RX Sensitivity Tuning
In some dense deployments, it is possible for APs to hear other APs on the same channel. This creates co-
channel interference and reduces the overall usage of the channel in a given area. Channel reuse enables
dynamic control over the receive (Rx) sensitivity to improve spatial reuse of the channel.
The channel reuse feature applies to non-DFS channels only. It is internally disabled for DFS channels and is does not
affect DFS radar signature detection.