Concept Guide

Parameter Description Range Default
min-mpdu-start-spacing
Minimum time between the start of adjacent
MPDUs within an aggregate MPDU, in
microseconds.
0 (No
restriction
on MDPU
start
spacing),
.25 µsec, .5
µsec, 1
µsec, 2
µsec, 4 µsec
0 µsec
mpdu-agg
Enable or disable MAC protocol data unit
(MPDU) aggregation.
High-throughput mesh 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.
enabled
short-guard-intvl-20Mhz
Enable or disable use of short (400ns) guard
interval for W-AP130 Series APs in 20 MHz
mode.
A guard interval is a period of time between
transmissions that allows reflections from
the previous data transmission to settle
before an AP transmits data again. An AP
identifies any signal content received inside
this interval as unwanted inter-symbol
interference, and rejects that data.
The 802.11n standard specifies two guard
intervals: 400ns (short) and 800ns (long).
Enabling a short guard interval can
decrease network overhead by reducing
unnecessary idle time on each AP. Some
outdoor deployments, may, however require
a longer guard interval. If the short guard
interval does not allow enough time for
reflections to settle in your mesh
deployment, inter-symbol interference
values may increase and degrade
throughput.
This parameter is enabled by default.
enabled
short-guard-intvl-40Mhz
Enable or disable use of short (400ns) guard
interval in 40 MHz mode.
A guard interval is a period of time between
transmissions that allows reflections from
the previous data transmission to settle
before an AP transmits data again. An AP
identifies any signal content received inside
this interval as unwanted inter-symbol
interference, and rejects that data.
enabled
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