Table of Contents
Advertisement
Specify Radio Frequency Management
Radio frequency (RF) management lets you specify the transmission power settings, WLAN
healing settings, and band steering settings.
Radio Frequency Concepts
Radio frequency (RF) management optimizes the channel allocation for access points based
on clients, user data traffic, and the nearby RF environment of access points. The wireless
controller periodically checks the radio neighborhood maps and detects changes in the radio
neighborhood maps or loss of connectivity to the wireless controller by an access point.
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.
You can configure centralized RF management for the basic profile group on the basic RF
Management page. If you use advanced profile groups, you can use the advanced RF
Management page to customize settings for each advanced profile group.
WLAN Healing Concepts
The wireless controller supports automatic WLAN healing through the following features:
•
Automatic channel allocation. Enables the wireless controller to distribute an access
point channel automatically across the access points on a floor to reduce interference.
Automatic channel allocation considers interference and the traffic load on the access
point, as well as the wireless mode and bandwidth (also referred to as channel width) to
provide the best channel for the access point. For information about how to configure
automatic channel allocation, including the option to skip automatic channel allocation
during a heavy traffic load or voice activity, see
•
Automatic transmission power. Automatically determines the optimum transmit power
of an access point based on the coverage requirement. The access point scans its
neighborhood to determine the RF environment to minimize neighboring access point
interference, leakage across floors, and coverage holes.
When you configure WLAN healing, we recommend the following:
•
Configure the WLAN self-healing wait time to a value greater than the access point reboot
time, which is usually one minute. Set an appropriate wait time to allow for fluctuations in
the power of nearby access points when access points are rebooted.
•
The number of neighbors to participate in WLAN self-healing must not be large (three to
four usually suffices in most deployments). Keep the number of participants low to
prevent too many access points from increasing power for a single failed access point.
ProSAFE Wireless Controller
Configure Channels
Configure WiFi and QoS Settings
198
on page 195.
Hide quick links:
Advertisement
Table of Contents
