User's Manual

channels on the 5 GHz band than on the 2.4 GHz band. For more information, see Configuring ARRM on an AP on
page 39.
HP MotionAware
The HP MotionAware feature continually monitors a RF neighborhood of the client to provide ongoing client
bandsteering and load balancing, and enhanced AP reassignment for roaming mobile clients. This feature
supersedes the legacy bandsteering and spectrum load balancing features, which, unlike HP MotionAware, do not
trigger AP changes for clients already associated to an AP.
When HP MotionAware is enabled on 802.11n capable APs, the HP MotionAware feature overrides any settings
configured for the legacy bandsteering, station handoff assist or load balancing features. 802.11ac-capable APs do not
support the legacy bandsteering, station hand off or load balancing settings, so these APs must be managed using HP
MotionAware.
When the HP MotionAware feature is enabled on an AP, the AP measures the RF health of its associated clients.
If one of the three mismatch conditions described below are met, clients are moved from one AP to another for
better performance and client experience. The HP MotionAware feature is supported only within an AP cluster.
The following client or AP mismatch conditions are managed by the HP MotionAware feature:
l Dynamic Load Balancing: HP MotionAware balances clients across APs on different channels, based upon the
client load on the APs and the SNR levels the client detects from an underutilized AP. If an AP radio can
support additional clients, the AP participates in HP MotionAware load balancing and clients can be directed to
that AP radio, subject to predefined SNR thresholds.
l Sticky Clients: The HP MotionAware feature also helps mobile clients that tend to stay associated to an AP
despite low signal levels. APs using HP MotionAware continually monitor the client's RSSI as it roams
between APs, and move the client to an AP when a better radio match can be found. This prevents mobile
clients from remaining associated to an APs with less than ideal RSSI, which can cause poor connectivity and
reduce performance for other clients associated with that AP.
l Band Steering: APs using the HP MotionAware feature monitor the RSSI for clients that advertise a dual-band
capability. If a client is currently associated to a 2.4 GHz radio and the AP detects that the client has a good
RSSI from the 5 GHz radio, the controller attempts to steer the client to the 5 GHz radio, as long as the 5 GHz
RSSI is not significantly worse than the 2.4 GHz RSSI, and the AP retains a suitable distribution of clients on
each of its radios.
By default, the HP MotionAware feature is disabled. For information on HP MotionAware configuration on an AP,
see Configuring ARRM on an AP on page 39.
Spectrum load balancing is integrated with the HP MotionAware feature. HP MotionAware allows the APs in a cluster to
be divided into several logical AP RF neighborhood called domains, which share the same clients. The VC determines
the distribution of clients and balances client load across channels, regardless of whether the AP is responding to the
wireless probe requests of the client.
Airtime fairness mode
The Airtime Fairness feature provides equal access to all clients on the wireless medium, regardless of client type,
capability, or operating system, thus delivering uniform performance to all clients. This feature prevents the clients
from monopolizing resources.
AP control
The following AP control features are supported:
HP Cloud Network Manager | User Guide Wireless configuration | 38