Bridge GUI Guide: Network Configuration
74
function is
Disabled
by default, at which setting the BSS
accepts connections from both 802.11g and 802.11b devices.
Enabling
G Band Only
prevents 802.11b wireless devices from
connecting to the BSSs. The older 802.11b is the slower of the
two 2.4 GHz wireless standards and most new devices support
802.11g. Consult the connecting device’s documentation to
determine which standard(s) it supports.
The
G Band Only
setting does not apply to BSSs on 802.11a
radios.
You can configure
G Band Only
only in Advanced View.
3.3.4.7
BSS WMM Setting
NOTE:
On BSSs
serving as Core in-
terfaces in a FP Mesh
network (Section 3.3.4.4),
Fortress recommends
the WMM default of
En-
abled
, to allow prioriti-
zation of FP Mesh
control packets.
Traffic received on BSSs
Enabled
for Wi-Fi Multimedia (the
default) is prioritized according to the QoS (Quality of Service)
tags included in its VLAN tags, if present, or directly in its
802.11 headers, if no VLAN tags are present.
Disabling WMM disables only the priority treatment of packets
received wirelessly, disregarding any priority marking in the
802.11 header. When WMM is disabled on a BSS, traffic
received on the interface is treated as untagged and marked
internally for
Medium
(or
Best Effort
) QoS handling. 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).
Refer to Section 3.8 for more on the Bridge’s WMM and QoS
implementation.
3.3.4.8
BSS DTIM Period
APs buffer broadcast and multicast messages for devices on
the network and then send a Delivery Traffic Indication
Message to “wake-up” any inactive devices and inform all
network clients that the buffered messages will be sent after a
specified number of beacons have been transmitted. (The
beacon interval, described in Section 3.3.2.8, is configured on
the
Radio Settings
screen.)
The
DTIM Period
determines the number of beacons in the
countdown between transmitting the initial DTIM and sending
the buffered messages. Whole values from
1
to
255
, inclusive,
are accepted; the default is
1
.
A longer
DTIM Period
conserves power by permitting longer
periods of inactivity for power-saving devices, but it also delays
the delivery of broadcast and multicast messages. Too long a
delay can cause multicast packets to go undelivered.
Because the broadcast beacon counts down the
DTIM Period
,
the specified
Beacon Interval
(configured on the
Radio Settings
screen and described in Section 3.3.2.8.) also affects the DTIM
function.
You can configure
DTIM Period
only in Advanced View.