User Manual

Table Of Contents
Configure WiFi, Radio Frequency, and QoS Settings
192
Wireless Controller
Radio Frequency Management Concepts
Radio frequency (RF) management lets you enable and specify settings for the following
features:
Transmission power. You can manage automatic transmission power (that is, the initial
power transmission level) and override transmission power settings for individual access
points.
WLAN healing. WLAN healing is a special feature of RF management. When you use
WLAN healing, if an access point goes down or loses connectivity, other access points
share its load to avoid a coverage hole. In such a situation, the other access points
increase their transmit power
. WLAN healing is configured per security profile group and
is active among access points that share a common security configuration.
Band steering. Band steering lets the wireless controller identify WiFi clients that are
dual-band capable and can force them to connect to the 5 GHz band rather than 2.4 GHz
band. WiFi clients that are already connected to the 2.4 GHz band can be forced into the
5 GHz band. In general, the 5 GHz band provides more channels, provides more
bandwidth, and causes less interference for WiFi clients.
Channel allocation. Y
ou
can manage automatic channel allocation and override channel
allocation for individual access points. Automatic channel allocation distributes channels
across the managed access points to reduce interference. With RF management, you
can let the wireless controller optimize the channel allocation for access points based on
clients, user data traffic, and the nearby RF environment of access points. The wireless
controller can periodically check the radio neighborhood maps and detect changes in the
radio neighborhood maps or loss of connectivity to the wireless controller by an access
point.
Except for channel allocation, you can configure the RF management features independently
for the basic profile and for each advanced profile. Channel allocation is a global feature that
applies to all access points. (If you disable channel allocation, it is globally disabled for all
access points.)
The allocated channels also apply to all access points, irrespective of
whether they are managed in the basic profile group or an advanced profile group.
The following sections describe the RF management features:
Configure
Automatic Transmission Power on page 193
Override Transmission Power for Individual Access Points on page 195
Configure WLAN Healing on page 198
Enable Band Steering on page 201
Configure Automatic Channel Allocation on page 203
Override the Channel and Frequency for an Access Point on page 206