Brocade Mobility RFS7000-GR Controller System Reference Guide (Supporting software release 4.1.0.0-040GR and later) - Manual (Page 186)

172 Brocade Mobility RFS7000-GR Controller System Reference Guide
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Viewing Access Port Information
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18. When the Voice Call Admission Control is enabled in the Global Settings, the Admission Control
Settings section allows you to modify the following properties.
19. The dot11k Functionality for this radio can be enabled in the dot11k Settings section by
checking the Enable dot11k checkbox. The quiet element associated with 802.11k can be
configured if the quiet element is enabled for the radio by checking the "Enable Quiet Element"
checkbox.
Beacon Interval Specify a beacon interval in units of 1,024 microseconds (K-us). This is a multiple
of the DTIM value, for example, 100: 10. (See "DTIM Period," below). A beacon is a
packet broadcast by the adopted Access Ports to keep the network synchronized.
Included in a beacon is information such as the WLAN service area, the radio-port
address, the broadcast destination addresses, a time stamp, and indicators about
traffic and delivery such as a DTIM. Increase the DTIM/beacon settings
(lengthening the time) to let nodes sleep longer and preserve battery life. Decrease
these settings (shortening the time) to support streaming-multicast audio and
video applications that are jitter-sensitive. The default is
100 K-us.
Self Healing Offset When an Access Port increases its power to compensate for a failure, power is
increased to the country's regulatory maximum. Set the Self Healing Offset to
reduce the country's regulatory maximum power if Access Ports are situated close
to each other or if an Access Port uses an external antenna.
DTIM Periods Select the DTIM periods button to specify a period for Delivery Traffic Indication
Messages (DTIM) for BSS IDs 1-4. This is a divisor of the beacon interval (in
milliseconds), for example, 10 : 100. (See "Beacon Interval," above). A DTIM is
periodically included in the beacon frame transmitted from adopted Access Ports.
The DTIM period determines how often the beacon contains a DTIM, for example,
1 DTIM for every 10 beacons. The DTIM indicates broadcast and multicast frames
(buffered at the Access Port) are soon to arrive. These are simple data frames that
require no acknowledgement, so nodes sometimes miss them. Increase the
DTIM/beacon settings (lengthening the time) to let nodes sleep longer and
preserve their battery life. Decrease these settings (shortening the time) to support
streaming-multicast audio and video applications that are jitter-sensitive. The
default DTIM period is 10 beacons for BSS 1-4.
Max Admitted MUs for
Voice Traffic Specify the maximum number of MUs allowed to connect to the specified radio for
voice traffic. Limiting the number of MUs can ensure that all voice MUs receive
enough bandwidth to ensure voice quality.
Max Roamed MUs for
Voice Traffic Specify the maximum number of voice MUs that are allowed to roam to this radio.
Limiting the number of MUs can ensure that all voice MUs receive enough
bandwidth to ensure voice quality.
Max Airtime for Voice Specify a maximum percentage out of the radio's total airtime that may be used for
voice.
Max Airtime for
Reserved Roaming Specify a maximum percentage out of the radio's total airtime that may be used for
voice MUs which roam from other APs.
Quiet Time The Quiet Time defines the Quiet Duration field in the Quiet Element IE and shall
be set to the duration of the quiet interval, expressed in TUs. In user terms it can
be defined as the duriation in which no transmit/receive will happen.
Quiet Interval The Quiet Interval indicates the Quiet Period in the Quiet Element IE and shall be
set to the number of beacon intervals between the start of regularly scheduled
quiet interval as defined in this Quiet element. In user terms it can be defined like
how often the no transmit/receive will be repeated.