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Fortress ES-Series CLI Guide: Networking and Radio Configuration
63
NOTE: It is possi-
ble to configure a
rate such as 48, which is
not an 802.11n rate, for
MaxRate or MinRate
on an 802.11n capable
radio. In that case the
MCS chosen will be the
one associated with the
next higher 802.11n rate.
For 48, that would be
rate "52", or MCS 5 or
13, depending on the
other radio configura-
tion settings.
Table 3.8 can also be used to figure out the range of unicast
transmission rates the radio will use when
RateMode auto and
the
MaxRate and MinRate are configured. For example, look
up each of those rate settings under the correct configuration
options, and the results will give the top and bottom of the
range.
3.4.9.6 BSS WMM QoS Setting
Traffic received on BSSs enabled for Wi-Fi Multimedia (
WMM)
QoS (Quality of Service) is prioritized according to the WMM
tags included in its VLAN tags, if present, or directly in its
802.11 headers, if no VLAN tags are present.
WMM is enabled by
default.
When
WMM is disabled, traffic received on the BSS is treated as
untagged and marked for
Medium (or Best Effort) QoS
handling (Section 3.10). The internal marking is used if the data
is transmitted out an interface that requires marking (such as
another WMM-enabled BSS or an 802.1Q VLAN trunk).
NOTE: BSSs serv-
ing as
Core
inter-
faces in an FP Mesh
network (Section 3.2.2)
should be enabled for
WMM
, to allow prioritiza-
tion of FP Mesh control
packets
.
On ES210 Mesh Points in Station Mode (refer to Section
3.4.11), WMM is also enabled by default on new STA
Interfaces (as described in Section 3.4.11).
3.4.9.7 BSS Fragmentation and RTS Thresholds
The fragmentation threshold (
FragThreshold) allows you to
configure the maximum size of the frames the BSS sends
whole. Frame sizes larger than the specified threshold are
broken into smaller frames before they are transmitted. An
Table 3.8 Fixed Unicast Transmission Rate By MaxRate For 802.11
Max Rate
Setting
Actual Radio Setting
FORCE STBC = OFF
and MIMO = ON
(FORCE STBC = ON and MIMO = ON)
or SISO or
NOT MIMO CAPABLE
MCS 10MHz 20MHz 40MHz MCS 10MHz 20MHz 40MHz
6.5 8 6.5 13 27 0 3.25 6.5 13.5
13 9 13 26 54 1 6.5 13 27
19.5 10 19.5 39 81 2 9.75 19.5 40.5
26 11 26 52 108 3 13 26 54
39 12 39 78 162 4 19.5 59 81
52 13 52 104 216 5 26 52 108
58.5 14 58.5 117 243 6 29.25 58.5 121.5
65 15 65 130 270 7 32.5 65 135