– 50 –
Chapter
4
|
Wireless
Settings
VLAN
Settings
◆
STBC
—
Space
‐
time
Block
Coding
sends
multiple
copies
of
the
same
data
over
a
number
of
antennas,
using
the
various
received
versions
to
improve
the
reliability
of
data
transfer.
The
transmitted
signal
may
traverse
a
difficult
environment
with
scattering,
reflection,
and
refraction
which
may
then
be
further
corrupted
by
thermal
noise
in
the
receiver,
so
some
of
the
received
copies
will
be
better
than
others.
This
redundancy
results
in
a
higher
chance
of
being
able
to
use
one
or
more
of
the
received
copies
to
correctly
decode
the
received
signal.
(Default:
Disabled)
◆
AMPDU
—
Enables
or
disables
the
use
of
Aggregated
MAC
Protocol
Data
Units.
Physical
layer
(PHY)
data
rate
improvements
do
not
increase
real
throughput
beyond
a
point
because
of
802.11
protocol
overheads.
The
main
media
access
control
feature
that
provides
a
performance
improvement
is
aggregation.
Aggregation
of
MAC
protocol
data
units
(MPDUs)
is
referred
to
as
MPDU
aggregation
or
(A
‐
MPDU).
(Default:
Enabled)
VLAN
Settings
VLANs
(virtual
local
area
networks)
are
turned
off
by
default.
If
turned
on
they
will
automatically
tag
any
packets
passed
to
the
LAN
port
from
the
relevant
VAP
(virtual
access
point).
The
access
point
can
employ
VLAN
tagging
to
control
access
to
network
resources
and
increase
security.
VLANs
separate
traffic
passing
between
the
access
point,
associated
clients,
and
the
wired
network.
You
can
configure
a
VLAN
for
up
to
13
VAP
interfaces.
Note
the
following
points
about
the
access
point’s
VLAN
support:
◆
If
an
Ethernet
LAN
port
on
the
access
point
is
assigned
a
VLAN
ID,
any
traffic
entering
that
port
must
be
also
tagged
with
the
same
VLAN
ID.
◆
A
management
VLAN
can
be
used
for
managing
the
access
point
through
remote
management
tools,
such
as
the
web
interface,
SSH,
Telnet
or
SNMP.
The
access
point
can
be
configured
to
only
accept
management
traffic
that
is
tagged
with
the
specified
management
VLAN
ID.
This
ID
must
be
assigned
to
the
Ethernet
ports
or
radio
interfaces
which
are
designated
to
handle
management
traffic.
◆
Wireless
clients
associated
to
the
access
point
can
be
assigned
to
a
VLAN.
Wireless
clients
are
assigned
to
the
VLAN
for
the
VAP
interface
with
which
they
are
associated.
The
access
point
only
allows
traffic
tagged
with
correct
VLAN
IDs
to
be
forwarded
to
associated
clients
on
each
VAP
interface.
◆
When
VLAN
support
is
enabled
on
the
access
point,
traffic
passed
to
the
wired
network
is
tagged
with
the
appropriate
VLAN
ID.
When
an
Ethernet
port
on
the
access
point
is
configured
as
a
VLAN
member,
traffic
received
from
the
wired
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