The following options can be configured on a per-WLAN basis:

• Fast BSS Transition: (Disabled by default) The Fast BSS Transition feature uses messages and procedures defined in 802.11r to allow continuous connectivity for wireless devices in motion, with fast and secure handoffs from one AP to another. A fast BSS transition is a BSS transition in the same mobility domain that establishes the state necessary for data connectivity before the re-association rather than after the re-association. In this way, clients that support the 11r standard (including iOS devices) can achieve significantly faster roaming between APs.
• Radio Resource Management: (Disabled by default) Radio Resource Management utilizes 802.11k Neighbor Reports, which are sent by the AP to inform clients of the preferred roaming target AP. The client sends neighbor report request to an AP, and the AP returns a neighbor report containing information about known neighbor APs that are candidates for a service set transition.
• Background Scanning: Background Scanning regularly samples the activity in all Access Points to assess RF usage for automatic optimal channel selection, to detect rogue APs, and to determine which APs are near each other for radio resource management and load balancing. These scans sample one channel at a time in each AP so as not to interfere with network use.
• Load Balancing: Enabling load balancing can improve WLAN performance by helping to spread the client load between nearby access points. The load balancing feature can be controlled from within the Unleashed web interface to balance the number of clients per radio on adjacent APs. "Adjacent APs" are determined by the Unleashed Master AP by measuring the RSSI during channel scans. After startup, the Unleashed Master AP uses subsequent scans to update the list of adjacent radios periodically and when a new AP sends its first scan report. When an AP leaves, the Unleashed Master AP immediately updates the list of adjacent radios and refreshes the client limits at each affected AP. Once the Unleashed Master AP is aware of which APs are adjacent to each other, it begins managing the client load by sending desired client limits to the APs. These limits are "soft values" that can be exceeded in several scenarios, including: (1) when a client’s signal is so weak that it may not be able to support a link with another AP, and (2) when a client's signal is so strong that it really belongs on this AP. The APs maintain these desired client limits and enforce them once they reach the limits by withholding probe responses and authentication responses on any radio that has reached its limit.
• Band Balancing: Band balancing balances the client load on radios by distributing clients between the 2.4 GHz and 5 GHz radios. This feature is enabled by default. To balance the load on a radio, the AP encourages dual-band clients to connect to the 5 GHz band when the configured percentage threshold is reached.
• 802.11d: The 802.11d standard provides specifications for compliance with additional regulatory domains (countries or regions) that were not defined in the original 802.11 standard. This option is enabled by default. For optimal performance of Apple iOS devices, it is recommended that you enable this option.
  Note: Some legacy embedded devices (such as wireless bar code scanners) may not operate properly if this option is enabled.