User's Manual

558 | Secure Enterprise Mesh Dell Networking W-Series ArubaOS 6.4.x| User Guide
Parameter Description
Maximum number of
spatial streams usable for
STBC transmission.
Controls the maximum number of spatial streams usable for STBC
transmission. 0 disables STBC transmission, 1 uses STBC for MCS 0-7. Higher
MCS values are not supported. (Supported on W-AP90 series, W-AP175, W-
AP130 Series and W-AP105 only. The configured value adjusts based on AP
capabilities.)
If you enable transmit beamforming, STBC is disabled for disabled for
beamformed frames.
MPDU Aggregation Enable or disable MAC protocol data unit (MPDU) aggregation.
High-throughput APs are able to send aggregated MAC protocol data units
(MDPUs), which allow an AP to receive a single block acknowledgment instead
of multiple ACK signals. This option, which is enabled by default, reduces
network traffic overhead by effectively eliminating the need to initiate a new
transfer for every MPDU.
Max received A-MPDU size Maximum size of a received aggregate MPDU, in bytes. Allowed values: 8191,
16383, 32767, 65535.
Max transmitted A-MPDU
size
Maximum size of a transmitted aggregate MPDU, in bytes.
Range: 1576–65535
Min MPDU start spacing Minimum time between the start of adjacent MPDUs within an aggregate
MPDU, in microseconds. Allowed values: 0 (No restriction on MDPU start
spacing), .25 µsec, .5 µsec, 1 µsec, 2 µsec, 4 µsec.